IHS ESDU Datasheets for Standards and Technical Documents
Standards and technical documents includes standards, codes, regulation, handbooks, manuals, comprehensive guides and other formal publications. Standards, codes, and regulation establish uniform specifications, procedures or technical criteria.
Standards and Technical Documents: Learn more
| Product Name | Notes |
|---|---|
| A computer program is provided for the estimation of r.m.s. surface strains in rectangular laminated skin panels. It applies to specially-orthotropi c plates having principal axes of orthotropy parallel to... | |
| By using an idealised joint model, the concept of a load/deflection diagram is developed to show the influence of pretensioning through to joint separation. That analysis is then built on... | |
| Constant amplitude fatigue crack propagation rate (da/dN) data are provided for a wide range of low and medium strength low alloy steels in the form of plate, bar and forgings. | |
| Constant amplitude fatigue crack propagation rate (da/dN) data are provided for a wide range of low and medium strength steels in the form of plate and a forging. The ultimate... | |
| Constant amplitude fatigue crack propagation rate (da/dN) data are provided for several aluminium alloys commonly used in the aerospace industry, in the form of plate, extruded bar and forgings. The... | |
| Constant amplitude fatigue crack propagation rate (da/dN) data are provided for several titanium alloys commonly used in the aerospace industry. The data have been derived from tests conducted in air... | |
| Curves are given which enable the flexibilities and the maximum longitudinal and circumferential elastic stresses to be obtained for thin smooth circular, unpressurised pipe bends having fully rigid flanges at... | |
| Data are provided for the design of helical springs, presented wherever possible in graphical form. Compression spring end forms and tension spring hooks are described with their effect on solid... | |
| Data are provided on the fatigue strength of structural steel I-beams with welded cover plates or stiffening gussets between the web and flange. Sketches of the configurations to which the... | |
| Data are provided, in graphical form where possible, for the design of helical compression springs acting in combination. The design process is applicable to either two or three springs arranged... | |
| Data on the fire hazard properties of combustible and flammable substances are essential to those engaged in the manufacture, processing, handling, transport and storage of such materials. ESDU 82030 provides... | |
| ESDU 79032 gives two graphs, one for the stress concentration due to tension or bending (which is accurate to within 5 per cent) and one for the stress concentration due... | |
| ESDU 79034 gives a method derived from ESDU 74040 that greatly simplifies the prediction of pressure loss for tube lay-outs typical of shell-and-tube heat exchanger design, that is with tubes... | |
| ESDU 79037 gives information to assist the specialist and non-specialist in fan selection and tender appraisal. For the non-specialist, the special terminology appropriate to fans is introduced, the types of... | |
| ESDU 80001 gives vapour data for 51 compounds. These include 4 ethyleneamines, 6 diaminoalkanes, 19 alkanonitriles, 9 alkenonitriles, 6 alkanedinitriles, 2 alkenedinitriles and 5 alkylhydrazines. The vapour pressures have been... | |
| ESDU 80003 provides information for estimating the mean forces and moments on surface-mounted rectangular prisms in turbulent shear flow, typically a rectangular building in the natural wind. The prism shapes... | |
| ESDU 80004 provides basic fatigue data on which to assess the endurance of steel coned disc springs (Belleville washers) either singly or in combinations. Fatigue data on coned disc springs... | |
| ESDU 80005 provides evaluated tabulated data and equations for the surface tension of water that are in agreement with the current International Formulation and are for use especially in heat... | |
| ESDU 80006 provides a means of estimating the drag increment due to rear fuselage upsweep. It is based on information derived from several studies of the problem carried out with... | |
| ESDU 80007 provides estimates of the fatigue endurance of aluminium alloy lugs with push-fit pins subjected to alternating loads. The results of 1740 fatigue tests have been analysed and are... | |
| ESDU 80008 presents charts of the distribution of forebody pressure coefficient for spherically blunted tangent ogive, spherically blunted paraboloid and modified ellipsoid forebodies of fineness ratio 1.0, 1.5 and 2.0... | |
| ESDU 80009 reviews and explains the purposes of performance flight testing and introduces the principles governing the various methods of processing the data obtained. It describes the interrelationship between the... | |
| ESDU 80010 provides buckling stresses for corrugated truss core sandwich panels under longitudinal compression for a range of truss geometries and different faceplate/core thickness ratios. Applicability covers panels in which... | |
| ESDU 80011 provides the peak elastic shear and direct tensile stresses in the adhesive in single step, double lap bonded joints loaded in tension or compression. The data cover a... | |
| ESDU 80012 describes the general characteristics of the basic types of sealing devices that are suitable for predominantly rotary shaft motion. It is intended to assist during the initial stages... | |
| ESDU 80013 is one of a series concerned with heat pipes. It reviews the various types of heat pipes, outlines their mode of operation, and indicates operating limits. It also... | |
| ESDU 80015 gives dynamic viscosity data at saturation pressure for 55 alkenes, straight chain up to C20 and branched chain up to C10. The data were critically evaluated and fitted... | |
| ESDU 80016 gives the reasons for the choice of the particular form of the Wagner equation used in correlating and presenting the data on vapour pressure used in subsequent ESDU... | |
| ESDU 80017 tabulates values and gives equations for the saturation-line thermophysical properties of a number of fluids suited to capillary heat pipe and thermosyphon use (as described in ESDU 79012... | |
| ESDU 80020 contains a simple method for estimating the average downwash angle at the tailplane for subsonic speeds and low angles of attack where the lift, pitching moment and downwash... | |
| ESDU 80021 provides data for the pressure drag component of the forebody drag for families of ellipsoidal, tangent ogive, spherically-blunted tangent ogive and flat-faced forebodies with and without a radiused... | |
| ESDU 80023 defines the specially-orthotropi c plate. Buckling loads are presented in terms of the plate geometry and the four flexural stiffnesses for a variety of edge conditions for plates... | |
| ESDU 80024 provides information about the effects of blockage on the forces and pressures on, and flow around, bluff and quasi-streamlined bodies in two- and three-dimensional flows confined by straight,... | |
| ESDU 80025 provides data for estimating the mean forces and pressures induced by flow normal or inclined to a cylindrical structure of circular cross-section. The data apply when the effect... | |
| ESDU 80027 presents data on the stress concentrations that occur around circular, elliptical, triangular, square or rectangular holes in flat plates under various combinations of loads in the plane of... | |
| ESDU 80028 presents the results of 251 tests on threaded assemblies in which the nominal thread diameter was equal to, or greater than, 1.5 inches (38 mm). Of these tests... | |
| ESDU 80029 gives vapour pressure data for 51 compounds. These include 18 alkanoic acids, 9 alkenoic acids, 6 alkanedioic and alkenedioic acids, 4 hydroxy, alkoxy and oxo carboxylic acids, 4... | |
| ESDU 80030 is primarily intended to provide a non-specialist with sufficient background for selection of an appropriate type of pump, for writing its specification and for the appraisal of tenders. | |
| ESDU 80031 provides performance estimates for a wide range of rotodynamic pumps so that a suitable standard pump may be selected readily. This information which would otherwise only be available... | |
| ESDU 80032 gives simplified forms of aircraft performance equations and the numerical constants associated with different sets of commonly-used units. These equations complement the more fundamental and detailed treatments given... | |
| ESDU 80033 gives graphical data for estimating the wing planform contribution to Lv for aircraft having wings of any trapezoidal planform with aspect ratio between 1 and 12, tip chord/root... | |
| ESDU 80034 gives a semi-empirical method for predicting (Lv)f, the change in rolling moment derivative due to sideslip that occurs when wing trailing-edge flaps are deployed for landing or take-off. | |
| ESDU 80035 provides data on the buckling of outstanding flanges subjected to stresses which vary linearly or parabolically across their width. The buckling stresses are given for long thin rectangular... | |
| ESDU 80036 introduces the concepts of linear elastic fracture mechanics and shows how these concepts may be used for analysing the behaviour of cracked structures under fatigue or static loadings. | |
| ESDU 80037 provides a method for estimating the pressure recovery of axisymmetric intakes at subsonic speeds. The method is based on a semi-empirical correlation of a wide range of experimental... | |
| ESDU 80039 provides a Fortran program (ESDUpac A8039) for the analysis of the distribution of the elastic shear and direct (normal) stresses in the adhesive which bonds lap joints of... | |
| ESDU 80040 provides computer programs to calculate the lower natural frequencies and mode shapes for axial and circumferential vibration of circular-cylindrical , uniform shells with either uniform stringer stiffeners or... | |
| ESDU 80041 provides background information and guidance on factors important in the selection, arrangement and mechanical support of refractory lining systems. The information given assists with specification writing and tender... | |
| ESDU 81001 provides a glossary of the terminology used in the rotodynamic pump industry, covering both fluid mechanics and mechanical design aspects of pump engineering. Many entries are illustrated and... | |
| ESDU 81002 provides a comprehensive set of conversion factors between sets of units in common use in pump engineering, including SI and technical metric, foot-lb-second and other US and Imperial... | |
| ESDU 81003 gives vapour pressure data for 53 compounds. These include 6 isovalerates, 12 esters of higher alkanoic acids (hexanoates etc), 10 acrylates and methacrylates, 5 oxalates and 10 other... | |
| ESDU 81004 gives three Mach number dependent functions, the momentum function and alternative forms of the mass flow function, which are useful in many one-dimensional duct flow problems. The use... | |
| ESDU 81005 describes the general characteristics of the most commonly used rolling bearings that are suitable for applications involving relative rotation between a shaft and housing. Assistance is given to... | |
| ESDU 81006 provides the maximum elastic stress concentration factor acting at the perimeter of the hole in lugs loaded axially by a single central clearance-fit pin. The effect of pin... | |
| ESDU 81008 forms part six of an integrated group that deal with the design of linear systems. It considers the factors that, in particular, affect the selection of a specific... | |
| ESDU 81009 presents a method for estimating the internal drag and airflow of turbo-jet and turbo-fan engines in windmilling and, to a lesser extent, "locked-rotor" conditions for use in the... | |
| ESDU 81010 provides evaluated thermophysical properties data for ammonia on the saturation line. Equations, based on a critical evaluation of experimental data in the literature are given for the variation... | |
| ESDU 81013 gives a semi-empirical method for predicting the changes in sideforce and yawing moment derivatives due to sideslip that occur when wing trailing-edge flaps are deployed for landing and... | |
| ESDU 81014 presents a method that applies to wings without dihedral, camber or twist, in the "clean condition", i.e. with any high lift devices retracted. The method was originally developed... | |
| ESDU 81016 gives dynamic viscosity data at saturation pressure for 71 aromatic hydrocarbons. These include benzene and its straight chain derivatives up to C26, dimethylbenzene (xylene) and other methyl straight... | |
| ESDU 81017 provides data for estimating the mean forces, pressures and moments induced by flow around a finite-length cylindrical structure of circular section. Data are presented in ESDU 80025 for... | |
| ESDU 81018 provides graphical data and a computer program for the estimation of the lower natural frequencies of thick-walled isotropic, circular cylinders based on the three-dimensional theory of elasticity for... | |
| ESDU 81020 gives a method for predicting the lift coefficient versus Mach number curve defining separation from a series of pressure distribution calculations using computer codes that strictly do not... | |
| ESDU 81021 provides a means of estimating pressure losses caused by bluff obstructions in pipe and duct systems, such as a pipe crossing a duct, an instrumentation housing projecting into... | |
| ESDU 81022 provides guidance on the use of the analytical procedures presented in ESDU 79016 and ESDU 80039 as aids in the design of bonded joints. Examples of the adhesive... | |
| ESDU 81023 provides a means of estimating the effect on lift and drag of the variation in geometry and disposition, with respect to each other and to the centre of... | |
| ESDU 81024 provides a simple method of estimating the drag of axisymmetric cowls at subsonic speeds. The cowl is assumed to consist of a forebody and an afterbody having a... | |
| ESDU 81025 gives vapour pressure data for 52 aliphatic derivatives of phenol. These include phenol and all the cresols and xylenols. Data for additional non-aliphatic derivatives are given in ESDU... | |
| ESDU 81026 describes methods used to represent airframe drag for performance calculations for all flight conditions in terms of the general functional relationships between the variables. Several analytical variants of... | |
| ESDU 81027 provides data giving the mean force coefficients for plane lattice frames of conventional geometry. They are applicable to the calculation of wind loading (or other fluid loading) on... | |
| ESDU 81028 provides data for estimating the mean wind (or other fluid) forces and moments on spatial lattice structures such as towers. It can be used in the design of... | |
| ESDU 81029 provides values of the geometrical factor in the stress intensity factor for round-ended lugs loaded axially by a single central clearance-fit pin. The cracks are assumed to be... | |
| ESDU 81030 provides values of saturated liquid heat capacity and enthalpy for 20 aliphatic ketones. The data are tabulated at intervals of 10 K in the range from the melting... | |
| ESDU 81032 illustrates the estimation of the rolling moment derivative due to sideslip for complete aircraft at subsonic speeds. It shows how to combine the ESDU methods for predicting the... | |
| ESDU 81033 presents an "atlas" of graph sheets that directly provide nine important performance parameters related to the motion of the crank including: a) angle between the coupler link and... | |
| ESDU 81034 provides data for evaluating the forces, moments and pressure distributions on a thin aerofoil (strictly a flat plate) oscillating in heave and in pitch and with the oscillation... | |
| ESDU 81035 gives guidance on the estimation of lateral attenuation of aircraft noise from noise measurements. Lateral attenuation is defined as the difference between the under-the-flightpath and sideline free-field levels... | |
| ESDU 81036 provides estimates of frequency, mode shape, generalised mass and generalised stiffness for the undamped natural modes of vibration of core buildings. The data are particularly applicable in estimating... | |
| ESDU 81037 is the second of a group of three dealing with design considerations in rolling bearing selection. It will assist designers in those applications where a bearing arrangement consisting... | |
| ESDU 81039 provides basic data for use in the calculation of pressure losses for incompressible flow (generally liquid flow) in ducts containing orifice plates, perforated plates and thick orifice plates... | |
| ESDU 81040 is the seventh Item in an integrated group that deal with the stability and response of linear systems. Its aim is to assist those with limited experience in... | |
| ESDU 81042 gives vapour pressure data for 29 compounds not covered by ESDU 81025. These include chloro, bromo and fluoro as well as nitro, hydroxy and aromatic derivatives. The vapour... | |
| ESDU 81043 provides essential data for estimating the change in acoustical energy as sound propagates through a ventilating system. From a knowledge of this sound energy the sound pressure level... | |
| ESDU 81044 provides, directly, heat transfer coefficient data and enthalpy data specifically for the fully-developed turbulent flow of water or steam in plain circular tubes. The data are presented in... | |
| ESDU 81045 derives, from a wide range of data sources, a correlation giving the variation of Stanton number with Reynolds number and Prandtl number for a complete range of annulus... | |
| ESDU 81046 gives algebraic, numerical and graphical forms of "acceleration factors" which provide a simple, direct method of taking into account the acceleration of an aircraft along the flight path... | |
| ESDU 81047 introduces a Fortran program (ESDUpac A8147) for calculating the buckling loads of flat rectangular orthotropic plates under combinations of uniform in-plane biaxial direct and shear loads. The program... | |
| ESDU 82001 provides an introduction to terminology used for acoustic quantities and their relationships and further provides general guidance on the principles of noise control in ventilation and air-conditioning systems,... | |
| ESDU 82002 provides a means of estimating the attenuation of sound in lined plenum chambers and ducts, and through silencers of the types used in ventilation and air-conditioning systems. Data... | |
| ESDU 82003 illustrates, by means of a worked example, the application of data provided in ESDU 79037, 81043, 82001 and 82002. These provide the essential data for the estimation of... | |
| ESDU 82004 provides evaluated thermophysical properties data for phenol on the saturation line. Equations, based on a critical evaluation of experimental data in the literature are given for the variation... | |
| ESDU 82005 presents results, for use in flutter calculations, obtained from a computer program. The program embodies a method for evaluating the forces, moments and pressure distributions on a thin... | |
| ESDU 82006 provides a method for selecting a cam law for a DRD motion segment in any cam mechanism; laws considered are simple harmonic, parabolic (constant acceleration), cycloidal (sine acceleration),... | |
| ESDU 82007 provides mean fluid force coefficients for structural members of various shapes for use particularly in the estimation of wind loading on rolled-steel structural members. The data cover equal... | |
| ESDU 82009 provides pressure loss and discharge coefficient data for subsonic compressible flow of gases through single, or multiple, sharp-edged orifices in thin or thick plates for flow rates up... | |
| ESDU 82010 provides a method for estimating the contribution of a fin to the sideforce, yawing moment and rolling moment derivatives due to sideslip for aircraft at subsonic speeds. The... | |
| ESDU 82011 illustrates the estimation of the sideforce and yawing moment derivatives due to sideslip for complete aircraft at subsonic speeds. It shows how to combine the ESDU methods for... | |
| ESDU 82014 is the third of a group of three dealing with design considerations in rolling bearing selection. It deals with some of the bearing types not fully covered in... | |
| ESDU 82016 gives vapour pressure data for 64 compounds. These include 44 cycloalkanes, 9 cycloalkenes, and 11 other compounds such as pinene. The vapour pressures have been critically evaluated and... | |
| ESDU 82017 provides a method for estimating the contribution of a fin to the sideforce, yawing moment and rolling moment derivatives due to rate of yaw for aircraft at subsonic... | |
| ESDU 82018 provides pressure distribution data for the flow of air over four families of blunt forebodies at zero incidence. The families chosen are ellipsoidal (subsonic or supersonic freestream), spherically-curved... | |
| ESDU 82019 provides estimates of frequency, mode shape, generalised mass and generalised stiffness for the undamped natural modes of vibration of rectangular sway frame buildings and other frame structures that... | |
| ESDU 82021 provides data and a simple method for calculating pressure loss and heat transfer for single-phase turbulent flow in channels subjected to uniform heat fluxes on the shell-side or... | |
| ESDU 82022 presents the analysis of approximately 440 fatigue tests on steel lugs subjected to constant amplitude loading applied by a single central clearance-fit pin. The steels include 2%Ni-Cr-Mo, 1%Cr-0.55%Mo-18%Ni... | |
| ESDU 82023 provides a general method for determining the minimum size of cam to suit a given application. Input information required includes the timing chart, the rotation speed, the cam... | |
| ESDU 82024 provides a method to suit any application with a rotating motion requiring either a translating or swinging output motion. The cam types are classified according to the output... | |
| ESDU 82025 is the first of a group providing the designer with guidance on the methods currently available of assessing the likelihood of fracture in fibre reinforced laminates. The more... | |
| ESDU 82026 provides methods for estimating the variation of strong hourly-mean wind speeds in the atmospheric boundary layer. The data are particularly applicable in calculations of wind loads on buildings... | |
| ESDU 82027 gives a graphical method, and a computer program (ESDUpac A8727), for estimating the free-field values of one-third octave band lateral attenuation. Lateral attenuation is defined as the difference... | |
| ESDU 82028 provides a simple graphical means of estimating the pressure drag of the forebodies for any flight Mach number above 3. For cone semi-apex angles between 0 and 40... | |
| ESDU 82029 provides charts and calculation methods for the design of fixed-inclined-pad thrust bearings. It may also be used to analyse the performance of existing bearing designs in failure analysis... | |
| ESDU 82031 provides force and moment coefficients for use primarily in estimating mean wind loading on stationary or slow moving paraboloidal reflectors such as are used for microwave communications antennas,... | |
| ESDU 82032 provides evaluated thermophysical properties data for o-cresol, m-cresol and p-cresol on the saturation line. Equations, based on a critical evaluation of experimental data in the literature are given... | |
| ESDU 82033 provides a method to estimate in initial design or project studies the take-off distance to 50 ft (15.2 m) of light and general aviation aircraft from hard, level,... | |
| ESDU 82034 provides a simple method of predicting, at the project stage of the design of an aircraft, the lift, drag and pitching moment increments arising from a lift augmentation... | |
| ESDU 82037 provides a computer program for the determination of the response of two-degree-of-freedo m systems with constant coefficients to any known applied forcing functions. The program is capable of... | |
| ESDU 83001 provides an approximate method for determining the uninstalled static thrust and the thrust lapse characteristics for a wide variety of constant-speed propellers. The method provides estimates of thrust... | |
| ESDU 83002 provides a graphical presentation of the allowable stresses in both compression and tension springs for static or fatigue loading of common spring materials. Data are given for 6... | |
| ESDU 83003 provides a comprehensive guide to the concepts and principles relating to the design and operation of helical springs. After a detailed description of the prestressing process, the considerations... | |
| ESDU 83004 provides charts and calculation methods for the design of off-set pivot, tilting-pad thrust bearings. It may also be used to analyse the performance of existing bearing designs in... | |
| ESDU 83005 provides evaluated thermophysical properties data for the six xylenols on the saturation line. Equations, based on a critical evaluation of experimental data in the literature are given for... | |
| ESDU 83006 provides a method for calculating the contributions of the vertical stabilising fin of an aircraft to the sideforce, yawing moment and rolling moment derivatives due to rate of... | |
| ESDU 83007 gives constant amplitude fatigue crack propagation rate data for several aluminium alloy sheet materials commonly used in the aerospace industry. The data have been derived from tests in... | |
| ESDU 83008 provides a general method for determining the minimum size of cam and swinging follower configuration to suit a given application. Input information required includes the timing chart, the... | |
| ESDU 83009 provides damping data for the estimation of the small amplitude response of tall buildings to wind excitation. Data enable the modal damping, expressed as a fraction of critical... | |
| ESDU 83010 uses slender body theory (independent of Mach number) to estimate the longitudinal lift distribution and pitching moment due to the oscillatory motion of slender bodies of revolution. A... | |
| ESDU 83012 presents graphically as stress versus endurance curves (S-N curves) the results of some 500 constant amplitude fatigue tests on titanium alloy screw threads to provide fatigue strengths at... | |
| ESDU 83014 presents the failure criteria available for the strength assessment of individual layers of a fibre reinforced laminate in a state of uniaxial or biaxial plane stress. It allows... | |
| ESDU 83015 contains liquid thermal conductivity data for sixteen alkyl and alkenyl pyridines, ten alkyl quinolines, three alkyl pyrroles, pyrrolidine and piperidine. Experimental results drawn from the literature for each... | |
| ESDU 83017 gives graphs of forebody volume coefficient and wave drag coefficient for various blunting radii on secant ogive forebodies of various geometries in the Mach number range 0.70 to... | |
| ESDU 83018 gives graphs showing the axial variation of the pressure coefficient along the length of the forebodies for which wave drag data are given in ESDU 83017. The Mach... | |
| ESDU 83020 provides pressure distribution data for both surfaces of simple, isolated, paraboloidal antennas in uniform flow. For incidences of 0 and 180 degrees the data are presented as radial... | |
| ESDU 83021 presents analytical methods which allow, by a consideration of kinematics only, a design or analysis of an epicyclic gear train to be accomplished. The single-carrier gear train, the... | |
| ESDU 83023 provides more than 1750 plane strain fracture toughness values for 39 UK and US low alloy, nickel, maraging and stainless steels. The data are presented in tabular form,... | |
| ESDU 83024 examines the relationship between the coefficients of the stability quartic of the lateral equations of motion and the coefficients of the equivalent quadratic factors. Relationships are developed that,... | |
| ESDU 83025 relates to such items as drain masts, whip aerials, ill-fitting access hatches, fasteners, etc. The complexity of the flow around a circular cylinder and its variation with geometry... | |
| ESDU 83026 gives a method for predicting the body contribution to the yawing moment derivative due to rate of yaw for use in the calculation of aircraft lateral stability. A... | |
| ESDU 83027 is one of a comprehensive series dealing with the design of cam and follower systems. It gives methods using portions of symmetrical DRD cam law motion segments described... | |
| ESDU 83028, which is an Addendum to ESDU 83001, provides an approximate method for determining the uninstalled static thrust and the thrust lapse characteristics for a wide range of direct-drive,... | |
| ESDU 83029 gives a comprehensive and systematic procedure for the correction of sensed anemometric data. It is directed particularly to measurements made during flight tests on prototype or test aircraft... | |
| ESDU 83030 enables an appropriate filter to be selected for a lubricant circulation system by estimating the required filter rating or filter stopping power. After describing the features of a... | |
| ESDU 83031 enables the most suitable type of sealing arrangement to be selected at the initial design stages. Contact, clearance and membrane seals are considered (of which contact seals are... | |
| ESDU 83033 provides data on the geometrical component of stress intensity factor at a quarter-circular or quarter-elliptical corner crack on the transverse diameter of a lug whose bore is loaded... | |
| ESDU 83034 provides data for isotropic cylinders subjected to either axial load or combined axial load and internal pressure. The data relate to cylinders of uniform wall thickness. A correction... | |
| ESDU 83035 is accompanied by a program (ESDUpac A8335) for estimating the data that are particularly relevant to multilayered laminates having fibre-reinforced composite layers, but are equally applicable to plates... | |
| ESDU 83036 is accompanied by a program (ESDUpac A8336) for estimating the lower natural frequencies of the initially unstressed plates. The calculation procedure is particularly applicable to fibre-reinforced composite laminated... | |
| ESDU 83037 gives comprehensive data for the estimation of pressure loss in circular-arc bends taking account of the effects of bend radius ratio and angle, upstream and downstream duct lengths,... | |
| ESDU 83038 gives a simplified calculation procedure for estimating the flow rate of the shellside fluid through the various leak and by-pass paths of a shell-and-tube exchanger. The reduced flow... | |
| ESDU 83040 gives a simple and rapid means of estimating the spanwise loading of a wide range of twisted wing planforms for unseparated subcritical flow. It is based on lifting-surface... | |
| ESDU 83041 gives a basic insight into and understanding of the concepts and definitions required to study random processes. No previous knowledge of statistics or harmonic analysis is assumed of... | |
| ESDU 83042 presents methods for estimating spray 'envelopes' that define the height, width, shape and location of the following plumes generated by aircraft-type tyres running in water or slush: side-spray... | |
| ESDU 83043 gives equations for the bending moment, radial shear force, circumferential direct force, shear flow, and the radial, tangential and angular displacements at any cross-section of the flexible frame. | |
| ESDU 83044 gives plasticity correction factors for plate and flange structural elements subjected to compression or shear loading. This allows the elastic buckling stresses computed for structures comprising such elements... | |
| ESDU 83045 gives a method for estimating the variation of the expected maximum gust speed with height above the ground for any gust averaging time greater than about 1 second. | |
| ESDU 83046 provides simple techniques and data for the estimation of the wave speeds in fluids contained in lined or unlined circular pipes, unlined non-circular pipes, lined or unlined circular... | |
| ESDU 84001 shows how crack growth data, such as those in this Series, are used in practical situations; it provides two fully-worked examples using representative structural components to estimate the... | |
| ESDU 84002 demonstrates how methods given elsewhere in the Series for estimating the contributions to the derivatives Yr, Nr and Lr due to individual major parts of the airframe (wing,... | |
| ESDU 84003 provides constant amplitude crack growth rate data for a wide range of common specifications of high alloy and stainless steels in the form of plate, sheet, bar, castings... | |
| ESDU 84004 gives a correlation of experimental data drawn from a large number of sources that enables spillage drag to be estimated for a wide range of configurations at incidences... | |
| ESDU 84005 illustrates how data on windmilling drag and airflow and on spillage drag are used to predict the drag due to the inoperative engine. The data are respectively taken... | |
| ESDU 84006 provides data for the prediction of the extreme fibre stress at buckling of a cylinder under a bending moment alone or under combined bending moment and axial compression. | |
| ESDU 84007 is concerned with the necessary further treatment of data provided by the manufacturer of the total temperature probe to ensure that results obtained using it are correct under... | |
| ESDU 84009 introduces the use of Describing Functions (DF) to estimate the stability and the steady-state response of autonomous closed-loop non-linear systems. The DF uses a single sinusoidal input to... | |
| ESDU 84010 contains liquid thermal conductivity data for twenty three aromatic hydrocarbons, five biphenyls, nine fused ring aromatics and derivatives, styrene and phenylcyclohexane. Experimental results drawn from the literature for... | |
| ESDU 84011 provides a simplified method of estimating the variation of design wind speed (mean-hourly or gust values) with height about the ground and with terrain roughness. The data for... | |
| ESDU 84013 provides a simplified graphical method for predicting maximum pressure changes in liquid filled pipework systems that may be treated as one-line systems. The method applies to pressures induced... | |
| ESDU 84015 provides a graphical method for predicting the drag and lift (that is, crosswind force) on each of a pair of closely spaced equal diameter cylinders having their axes... | |
| ESDU 84016 gives correlations for calculating the external heat transfer and pressure loss for flow over low-fin tube banks. "Low-fins" are fins of limited height formed on the tube outside... | |
| ESDU 84017 provides a graphical method for predicting failure in the contact area of two elastic bodies subjected to combined normal and tangential loading. The method assumes that the ratio... | |
| ESDU 84018 introduces a Fortran program (ESDUpac A1043) for failure analysis of the laminate subjected to consecutive systems of combined in-plane, moment and thermal loading. Initially unrestrained balanced or unbalanced... | |
| ESDU 84020 explains the derivation and application of the indicial (step-response) functions (also called Wagner and Kussner functions) used to study aircraft response. The functions are introduced through the Fourier... | |
| ESDU 84021 introduces the vapour pressure data in the Series by explaining how a constrained Wagner equation is used to fit available experimental results drawn from the literature. The constraints... | |
| ESDU 84022 gives vapour pressure data for the first 7 normal alkanes and their isomers, 22 compounds in all. The data were obtained from a critical evaluation of experimental results... | |
| ESDU 84023 considers tubular condensers in which the coolant flows in horizontal tubes across which a pure vapour flows. It gives methods, derived empirically, for estimating total pressure drop (in... | |
| ESDU 84025 provides a method for estimating the fatigue endurance of the lugs under a constant amplitude alternating load. The results of over 800 tests taken from the literature were... | |
| ESDU 84026 provides a simple empirically derived method for estimating maximum lift coefficient. The method predicts the increment in lift coefficient by which the maximum exceeds the value at zero... | |
| ESDU 84027 gives results extracted from the literature of narrow band random amplitude, with zero mean, fatigue endurance tests as plots of rms strain against cycles to failure. Lives were... | |
| ESDU 84028 gives vapour pressure data for 28 octanes and nonanes. The data were obtained from a critical evaluation of experimental results in the literature, extrapolated by a reliable method... | |
| ESDU 84030 provides tables of values of longitudinal turbulence intensities at 25 height intervals up to 400 m (1310 ft) above flat terrain for various site terrain roughnesses. The values,... | |
| ESDU 84031 gives a calculation method by which a bearing can be designed to meet a required performance specification, or the performance of an existing design can be analysed. Guidance... | |
| ESDU 84032 extends the use of the Describing Function method introduced in ESDU 84009 to include determining the response of a closed-loop system to a sinusoidal input. Two alternative methods... | |
| ESDU 84035 provides simple empirical methods for estimating the drag of the excrescences, either wholly or partially immersed in a turbulent boundary layer, for Mach numbers up to 3 but... | |
| ESDU 84037 provides the evaluated analysis of some 1500 fatigue tests, drawn from the literature, on externally threaded members loaded through the nut. The results are shown in two graphs... | |
| ESDU 84038 gives a graphical method for estimating the maximum and minimum surge heads, following pump trip, at four points in a single pipe discharge line. Plotting those results on... | |
| ESDU 84039 gives methods for estimating the stresses in, deflections of, and ultimate load capacity of angle and club-foot fittings used to provide a tensile load path across a joint... | |
| ESDU 84040 gives graphs from which quick first approximations can be obtained to the landing field lengths for all types of "conventional-landin g" civil-transport aeroplanes. The estimation method assumes the... | |
| ESDU 84041 gives approximate values of a number of properties of common materials of interest in tribological calculations. Density, tensile modulus, Poisson's ratio, linear thermal expansion coefficient, thermal conductivity, specific... | |
| ESDU 84042 provides the equivalent stiffnesses of shear webs containing such features as holes, castellated edges, corrugations and swages. Also provided are estimates of the effective area of the shear... | |
| ESDU 85001 introduces a Fortran program (ESDUpac A8501) that yields the stress and strain distribution around the circumference of a hole in an orthotropic sheet under any combination of in-plane... | |
| ESDU 85002 gives vapour pressure data for 30 alkanes. The data were obtained from a critical evaluation of experimental results in the literature, extrapolated by a reliable method into the... | |
| ESDU 85004 gives stress-endurance curves through the results extracted from the literature of some 80 constant amplitude fatigue tests on five different types of studs with machined threads torque-tightened into... | |
| ESDU 85006 provides a method that relates the values of the dihedral contributions to the derivatives to the contribution of planform to the rolling moment due to rate of roll,... | |
| ESDU 85007 presents a step-by-step calculation procedure for the evaluation of the individual stress components associated with the contact region of two unlubricated elastic bodies subjected to normal and tangential... | |
| ESDU 85008 gives vapour pressure data for 29 alkenes. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature,... | |
| ESDU 85009 gives a graphical means of estimating the maximum mass inflow rate, and hence the pressure drop below atmospheric, through an air inlet/outlet valve following pump trip or valve... | |
| ESDU 85010 discusses the application to the complete aeroplane of the prediction methods given in the Series for the contributions to the derivatives from wing planform and dihedral, and empennage. | |
| ESDU 85011 treats the additional corrections to the pitot and static pressures, registered by their sensors in unsteady flight conditions, required to allow the use of the steady-flight calibrations. The... | |
| ESDU 85012 introduces a computer program for the estimation of the material damping in a rectangular, laminated plate, with simply-supported or clamped edges, vibrating in the lower frequency natural modes... | |
| ESDU 85013 is one of a group dealing with the design of cam and follower systems. By means of two fully-worked practical design studies it shows how the procedures are... | |
| ESDU 85014 provides graphs that allow the dimensions of the minimum weight strut to be determined with a chosen probability and confidence that overall buckling will occur before local buckling. | |
| ESDU 85015 first explains the definitions of propeller thrust and efficiency in free air, discussing the contributions to losses from blade profile drag and induced effects, the latter split further... | |
| ESDU 85016 gives vapour pressure data for 20 alkenes. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature,... | |
| ESDU 85017 sets up an accounting framework for the split between thrust and drag for propeller-driven aircraft. It is assumed that free-air thrust is known either from calculations or from... | |
| ESDU 85019 gives graphs showing the rate of increase in crack length per loading cycle plotted against stress intensity factor range for a large group of steels. The curves were... | |
| ESDU 85020 is one of a series giving comprehensive turbulence characteristics for neutral atmosphere conditions which includes strong winds. It provides turbulence intensity, Reynolds stresses, probability and spectral density, and... | |
| ESDU 85022 guides the engineer in the process industries to the choice of the most suitable type of condenser for a specified duty, and assists the plant engineer in investigating... | |
| ESDU 85024 gives heat capacity and enthalpy data for 34 thiols and sulphides tabulated at 10 K intervals between the normal melting point and 0.86 critical temperature along the saturation... | |
| ESDU 85026 gives the basic equations and transfer functions of a selection of servomechanisms that are commonly encountered. Each servomechanism is briefly introduced and associated tables illustrate schematically each type... | |
| ESDU 85027 provides a method of estimating the lubricant film thickness in concentrated contacts that occur, for example, in rolling bearings and gears. It applies to a wide range of... | |
| ESDU 85028 extends the scope of ESDU 84031 to the analysis of axial groove hydrodynamic journal bearings under conditions for which the flow in the lubricating film is not laminar. | |
| ESDU 85029 gives a guide to topics that are common to take- off, accelerate-stop and landing. No particular emphasis is given to the class of aircraft, powerplant, surface, or type... | |
| ESDU 85030 presents notation for axes, linear and angular displacements, and for aerodynamic, powerplant, and ground- related forces and moments for use in ground performance calculations. It provides a comprehensive... | |
| ESDU 85031 provides R-curves for several aluminium, steel and titanium aerospace sheet materials in SI and British (lbf, in) units on transparencies for overlaying on plots of stress intensity factor... | |
| ESDU 85032 provides procedures for the design and performance prediction of ejectors and jet pumps where both the primary and secondary streams are liquid.The first procedure obtains an optimum design... | |
| ESDU 85036 presents as both equations and graphs approximate formulae for converting errors in pitot and static pressure into corrections to height, Mach number and indicated airspeed. The methods give... | |
| ESDU 85037 provides a computer program (ESDUpac A8537) for estimating the lower natural frequencies of initially unstressed rectangular sandwich panels. It is presented for convenient use when the face plates... | |
| ESDU 85041 discusses the problems met in thermal rating a vaporiser in terms of the flow patterns in boiling flow, the conditions for nucleate boiling, considerations of burn-out and dry-out,... | |
| ESDU 85044 gives a graphical method of estimating the magnitudes of the surge pressures following power failure to a booster pump that is protected by a one-way valve preventing reverse... | |
| ESDU 85045 discusses the decay of stress from a stress concentration and explains how knowledge of the decay from an individual stress raiser can be used to determine the likely... | |
| ESDU 85046 considers two classes of quadrature formulae that may be used for the approximation of definite integrals. They are Newton-Cotes formulae, of both the open and closed type, in... | |
| ESDU 86001 gives vapour pressure data for 36 compounds. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature,... | |
| ESDU 86002 provides methods for estimating the drag and pressure recovery of intakes partially or wholly immersed in the boundary layer. The methods, which are semi-empirical, apply to circular, semi-circular... | |
| ESDU 86003 shows how the program of ESDU 85001, which estimates the strain distribution around a circular hole in a fibre-reinforced composite plate, is used to establish the integrity of... | |
| ESDU 86004 gives equations and curves for a method that neglects the effects of any consequential changes in the independent variables although, at the cost of increased complexity, a means... | |
| ESDU 86005 gives the characteristics of aircraft-type cross-ply tyres under load normal to the runway surface. Equations for tyre deflection are primarily for establishing aircraft pitch attitude on the ground. | |
| ESDU 86006 considers all contributions to pressure errors and the implications of the various tests needed to determine the errors in steady level flight. Typical magnitudes of the various contributions... | |
| ESDU 86007 gives heat capacity and enthalpy data for 70 alkanes tabulated at 10 K intervals between the normal melting point and 0.96 critical temperature along the saturation line. The... | |
| ESDU 86008 discusses the advantages and explains the essential additional considerations in using a process fluid as a lubricant. Appropriate bearing materials are particularly important and tables of data allow... | |
| ESDU 86010 is the third in a group providing comprehensive atmospheric turbulence characteristics, and deals with the relationship between values measured at two points in space of the three turbulence... | |
| ESDU 86011 considers methods for the numerical evaluation of initial value problems in ordinary differential equations. Some of the methods are applicable to a set of n first-order differential equations... | |
| ESDU 86012 gives vapour pressure for 36 compounds. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature, extrapolated... | |
| ESDU 86013 discusses factors that affect the fatigue strength of a welded joint and, in particular, from fracture mechanics arguments, shows that the strength is independent of the strength properties... | |
| ESDU 86014 discusses factors affecting the tension in a bolt, and indicates the methods by which a desired tension may be obtained, with a comparison of their relative accuracy and... | |
| ESDU 86015 gives a graphical method for estimating the time-dependent pressure changes and piping forces that follow from a rapid valve closure in a one-pipe system of constant cross-section carrying... | |
| ESDU 86016 gives expressions and data for calculating the forces and moments acting on the tyre-ground contact area during unbraked and braked yawed rolling. The methods have been verified against... | |
| ESDU 86017 gives a simple method of estimating the thrust decrement and drag increment due to the interaction of propeller flow with a body (or nacelle) at zero incidence. It... | |
| ESDU 86021 is a comprehensive introduction to the concept and use of derivatives in determining aircraft stability. After explaining a systematic method for expressing aerodynamic forces, moments and derivatives in... | |
| ESDU 86022 presents correlations for external heat transfer coefficient and static pressure loss for single-phase flow over plain circular fins of either rectangular or tapered cross-section on round tubes. They... | |
| ESDU 86023 gives heat capacity and enthalpy data for 34 alkenes and 9 alkadienes tabulated at 10 K intervals between the normal melting point and 0.96 critical temperature along the... | |
| ESDU 86024 introduces a computer program, ESDUpac A8624, to calculate the rms surface strains in two orthogonal directions at the centre of the face plates. In estimating strains it is... | |
| ESDU 86025 provides guidance on design of aerospace structures to avoid acoustically or similarly induced fatigue failure. The sources of excitation in an aerospace environment are reviewed. Modes of response... | |
| ESDU 86026 gives three methods by which a polynomial equation can be used for a cam law that will satisfy certain motion requirements (displacement, velocity, acceleration, etc) at specified points. | |
| ESDU 86027 gives vapour pressure for 29 compounds. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature, extrapolated... | |
| ESDU 86028 discusses the effect of keyway design on the stress distribution, stress concentration and, hence, on fatigue strength. The effect of fit is considered and types of failure by... | |
| ESDU 86030 gives step-by-step calculation procedures, based on performance charts, for the optimum design of steam/liquid and steam/gas ejectors. For steam/gas ejectors the data are derived from a wide range... | |
| ESDU 86031 provides an introduction to the part of the Sub- series that deals with corrections to air data system measurements. The constituent parts of typical air data systems are... | |
| ESDU 86032 provides a method for determining when the heat flux exceeds a critical value at which the liquid will not wet the wall (the condition of dry-out). A study... | |
| ESDU 86033 uses the results of over 100 fatigue tests extracted from the literature to show the detrimental effect of chromium plating on the fatigue limit of low alloy steel. | |
| ESDU 86035 provides complementary data on integral length scales to those in ESDU 85020 and 86010, which are principally concerned with terrain uniform for at least 50 km (31 miles)... | |
| ESDU 86037 introduces the representation of a continuous signal by a sequence of equally spaced pulses each of which provides the value of the continuous signal at the particular sampling... | |
| ESDU 86038 discusses the importance of various parameters that affect fouling and indicates appropriate methods for dealing with fouling in all stages from design through to operation of heat exchanger... | |
| ESDU 86040 gives guidance on the selection of treatments that include traditional techniques, such as carburising and electroplating, and more recently developed methods, such as the chemical or physical vapour... | |
| ESDU 86041 gives equations relating quantities in one body axis system to those in another. The quantities are force, moment and velocity (linear and rotational) vectors, constants of inertia and... | |
| ESDU 87001 evaluates a simple semi-empirical method by comparing predictions made using it with tunnel data drawn from a wide range of sources. The method determines at low speed the... | |
| ESDU 87002 introduces computer programs and a graphical method for estimating the lower natural frequencies of initially unstressed isotropic plates with either all edges simply-supported or all edges fixed in... | |
| ESDU 87003 derives a simple formula for the wave drag of an aerofoil that requires for its evaluation a knowledge only of quantities on the aerofoil surface. The initial method,... | |
| ESDU 87004 gives methods for estimating the factor by which the drag due to an isolated excrescence on a flat plate (for which ESDU 74036, 75031, 76008, 79015 and 84035... | |
| ESDU 87005 gives a simple method for predicting the increment in drag at zero incidence for a flap positioned to maximise lift at stall. Using the limited number of experimental... | |
| ESDU 87007 gives a procedure for the selection of bearing materials for use in applications in which a film of fluid cannot be maintained. The range of commercially available materials... | |
| ESDU 87008 predicts semi-empirically the sideforce due to rudder deflection and its point of action on the fin, from which the rolling and yawing derivatives due to rudder deflection are... | |
| ESDU 87009 lists sources of data for vapour pressure, liquid and vapour density, liquid and vapour heat capacity/enthalpy, liquid and vapour viscosity, liquid and vapour thermal conductivity, surface tension and... | |
| ESDU 87010 tabulates density and molar volume for 50 alkanes (in units of kg/cu m and cu cm/mol respectively) at 10 K intervals from near the normal melting point to... | |
| ESDU 87011 provides a computerized method for the prediction of pure jet noise levels in flight from a static jet noise database. The procedure considers one-third octave band levels and... | |
| ESDU 87012 provides an introduction to buffeting, its sources, prediction and control. Types of flow separation occurring on aerofoils and wings are discussed and their effect on pressure distribution and... | |
| ESDU 87013 introduces a program, ESDUpac A8713, that treats either balanced face plates or two classes of unbalanced face plates. The equations solved are included and were derived using elastic,... | |
| ESDU 87015 presents design recommendations for various performance improvement methods such as vanes or splitters, screens or perforated plates, surface roughness or ribs cut transversely in the walls, vortex generators,... | |
| ESDU 87016 presents experimental data drawn from the literature that show the effect of relative scale and the influence of thickness on fatigue strength. It is found that in the... | |
| ESDU 87017 tabulates density and molar volume data for 54 alkenes (in units of kg/cu m and cu cm/mol) at 10 K intervals from near the normal melting point to... | |
| ESDU 87018 gives detailed examples of calculations of take- off and accelerate-stop distances. The methods used are representative of one approach to generating field length data for a flight manual. | |
| ESDU 87019 draws on the available data in the literature to predict the critical velocity through the bundle for the onset of fluidelastic instability for all likely tube arrangements. The... | |
| ESDU 87022 tabulates density and molar volume data for 69 alkadienes and alkynes (in units of kg/cu m and cu cm/mol) at 10 K intervals from near the normal melting... | |
| ESDU 87023 gives guidance on fastener devices commonly available to prevent joint loosening under severe vibration in service. The bolted assembly will usually be designed with the bolt(s) pretensioned to... | |
| ESDU 87024 gives a simple estimation method developed by correlating the available wind-tunnel data taken from the literature. The resulting correlation is presented in the form of a graph and... | |
| ESDU 87026 presents in graphical form (alternating stress plotted against endurance) the results extracted from the literature of over 900 constant amplitude tests on chromic or sulphuric acid anodised specimens. | |
| ESDU 87027 introduces a Fortran program, provided as an executable file, for a planar network modelled as an assembly of up to 100 straight lengths of pipe. Components that may... | |
| ESDU 87028 tabulates the melting/freezing points, normal boiling points, acentric factors, and critical temperatures and pressures for over 1000 organic compounds. For those compounds that are hydrocarbons, densities, molar volumes... | |
| ESDU 87030 introduces the essential features of "pinch technology" or process integration used to optimise energy utilisation in a process plant. The network design techniques are incorporated into the computer... | |
| ESDU 87031 involves estimating separately two contributions to the zero-lift angle. One is due to camber, taken as that corresponding to the wing-root section and assumed constant across the span. | |
| ESDU 87033 provides an empirical method for predicting the change in normal force and pitching moment due to applying moderate boat-tailing to an axisymmetric forebody-cylinder combination. The method applies for... | |
| ESDU 87034 explains the various mechanisms producing high winds, such as depressions, thunderstorms, tropical storms and tornadoes, and describes their characteristics and geographical occurrence. Detailed procedures are given for analysing... | |
| ESDU 87035 provides a step-by-step calculation procedure for the loading, accelerations and deflections of line-like structures such as bridges, masts and towers, or structural elements such as beams or columns... | |
| ESDU 87036 provides curves for the deflection, for the central total stress at the surface of the unloaded face, for the membrane stress at the plate centre and, for all... | |
| ESDU 87037 presents the more important aspects specific to vectored-jet-thrust, including the estimation and presentation of short take-off (STO) and "ski-jump" (curved ramp) modes. It concentrates on the calculation of... | |
| ESDU 87038 describes the ground calibration tests made to the actual pressure measuring system as installed in the aircraft in order that corrections to flight measured air data for acoustic... | |
| ESDU 88001 provides an empirically derived procedure for predicting the ratio of the critical heat flux in a horizontal tube to that in upward flow in a vertical tube under... | |
| ESDU 88003 gives a semi-empirical method for predicting the increments in the rates of change of hinge moment with incidence and with control deflection for controls fitted with unshielded and... | |
| ESDU 88004 gives an equation for the calculation of the thermal conductivity of multi-component liquid mixtures from the values for the pure components. The equation is shown to be more... | |
| ESDU 88005 tabulates values of vapour pressure for 33 alkyl alcohols. The best experimental data extracted from the literature have been fitted from the melting point to the critical point... | |
| ESDU 88006 gives a simple method, based on a correlation of established measurements made for a range of propeller and turbo-jet and turbo-fan powered aircraft, for predicting approximately the drag... | |
| ESDU 88007 gives graphs of rate of increase in crack length per loading cycle plotted against stress intensity factor range for 10 alloys, many with various heat treatments. The data... | |
| ESDU 88008 gives data for fatigue limit, or fatigue strength at high endurance for corrosion resistant steels which do not show a limit, for 240 different alloys. For axial, bending... | |
| ESDU 88009 provides evaluated thermophysical properties data for toluene. Equations, based on a critical evaluation of experimental data in the literature are given for the variation with temperature along the... | |
| ESDU 88010 provides data for the thermodynamic properties of toluene (methylbenzene) along the saturation line and in the single phase liquid, vapour and supercritical regions. The temperature range covered is... | |
| ESDU 88011 presents a method that complements the methods in ESDU 87039 in that it is iterative as was one method in ESDU 87039 but can take account of differing... | |
| ESDU 88012 gives vapour pressure for 23 alkyl alcohols. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature,... | |
| ESDU 88013 presents a semi-empirical method that improves the traditional approach based on Weissinger's simplified lifting-surface theory which drew parallels with the dihedral contribution to the rolling moment due to... | |
| ESDU 88014 introduces a computer program that predicts the operating characteristics of air-lift pumps. Such pumps operate by injecting air near the bottom of a riser so creating a two-phase... | |
| ESDU 88015 introduces a program in Fortran, provided as ESDUpac A8815, for calculating the wrinkling loads of balanced, and two classes of unbalanced, laminated face plates under uniaxial or biaxial... | |
| ESDU 88016 tabulates the density, isobaric specific heat capacity, specific enthalpy, viscosity and thermal conductivity of the liquid and vapour phases together with the vapour pressure, latent heat of vaporisation... | |
| ESDU 88017 gives vapour pressure for 18 compounds. The data were obtained by a method described in ESDU 84021 involving a critical evaluation of experimental results in the literature, extrapolated... | |
| ESDU 88018 provides a selection procedure for alloys for bearings operating in the hydrodynamic lubrication regime and only experiencing boundary lubrication at start-up or run-down or in unusual circumstances. The... | |
| ESDU 88019 provides a step-by-step calculation method for the loading, accelerations and deflections of buildings and plate-like structures. The loading is derived as the sum of a mean component together... | |
| ESDU 88020 tabulates the density, isobaric specific heat capacity, specific enthalpy, viscosity and thermal conductivity of the liquid and vapour phases together with the vapour pressure, latent heat of vaporisation... | |
| ESDU 88022 provides graphical data and introduces a program, ESDUpac A8822, for the estimation of the natural vibration characteristics of non-rigid planar piping systems, either empty or running full. The... | |
| ESDU 88023 introduces a computer program for the prediction of the natural shielding effect of two parallel identical jets. The shielding levels are predicted in one-third octave frequency bands over... | |
| ESDU 88024 considers scaling, corrosion, biofouling and particulate deposition and discusses the variables of importance for each. Advice is given on the design and subsequent operational management of a plant... | |
| ESDU 88025 gives data and methods of analysis for deriving true airspeed, Mach number, pressure height and ambient air temperature from registered values of total pressure and temperature, and static... | |
| ESDU 88027 plots as stress versus endurance the results extracted from the literature of over 400 fretting fatigue tests carried out on five alloys. The results allow the detrimental effect... | |
| ESDU 88028 complements ESDU 87019, which provides prediction methods for vibration of heat exchanger bundles. After outlining the nature of acoustic resonance, calculation methods are given for the acoustic frequency... | |
| ESDU 88029 predicts the adverse yawing moment accompanying aileron deflection as two components, an induced drag contribution due to the differential setting and a profile drag component. For the first... | |
| ESDU 88030 estimates the onset of non-linear aerodynamic characteristics by giving an empirical method for predicting the incidence and corresponding lift coefficient for either initial leading- or trailing-edge separation. The... | |
| ESDU 88031 provides a simple semi-empirical method for estimating the free-air low-speed values of these forces for an unswept wing/flap system submerged in the slipstream from multiple propellers. It provides... | |
| ESDU 88032 provides comprehensive data for estimating the wrinkling stress of the faceplates. The effect is taken into account of the faceplate properties and dimensions, the core shear moduli and... | |
| ESDU 88033 is a guide to BS 436: Part 3: 1986 which provides a rigorous analytical procedure for rating a gear of known size in terms of allowable stresses or... | |
| ESDU 88034, after a general introduction to buckling, provides data on the buckling stress for overall buckling of a strut with various end conditions and making allowance for initial imperfections. | |
| ESDU 88035 introduces a Fortran program (ESDUpac A8835). The program calculates the applied bending moment that gives a maximum allowable extreme fibre stress in a beam under symmetric loading. The... | |
| ESDU 88037 provides two examples of the use of the methods of ESDU 87034 for the analysis of wind speed maxima: using data for a single dominant storm mechanism and... | |
| ESDU 88038 provides an estimation method for use when meteorological records are inadequate to provide the data directly, or when they are not readily corrected for differences between the terrain... | |
| ESDU 88039 derives the discrete and continuous forms of the Kalman filter equations for a first-order randomly-excited linear system. Equations for the multi-dimensional filter for a randomly-excited system are also... | |
| ESDU 88040 describes a Fortran program, provided as ESDUpac A8840, that determines the aileron rolling and yawing moment coefficients for an aircraft. The program implements the empirical methods of ESDU... | |
| ESDU 89001 shows how the techniques of process integration introduced in ESDU 87030, where they were used to optimise heat exchanger networks, can be extended to design optimally the heat... | |
| ESDU 89002 provides evaluated thermophysical properties data for benzene. Equations, based on a critical evaluation of experimental data in the literatureare given for the variation with temperature along the saturation... | |
| ESDU 89003 provides data for the thermodynamic properties of benzene along the saturation line, and in the single phase vapour and supercritical regions. The temperature range covered is from 290... | |
| ESDU 89004 presents, in sixteen graphs, plots of stress versus endurance for the results extracted from the literature of over 500 fretting fatigue tests on six alloys. The data allow... | |
| ESDU 89005 provides evaluated thermophysical properties data for buta-1,3-diene. Equations, based on a critical evaluation of experimental data in the literature are given for the variation with temperature along the... | |
| ESDU 89006 gives vapour pressure for 3-chloropropene, 3-chloropropylene, perchlorobuta-1,3-di ene, perfluorobut-1-ene and perfluoropropylene together with 45 bromo-, chloro- and fluoroalkanes and 9 chloro- and fluoroaromatics. The data were obtained by... | |
| ESDU 89007 gives the cubic equation for the buckling stress of a strut of arbitrary open section under the interaction of the flexural and torsional-flexural modes. When the section has... | |
| ESDU 89008 uses data drawn from the literature to produce semi-empirical correlations for the aerodynamic characteristics of cone and ogive forebodies, either sharp or with varying degrees of spherical blunting,... | |
| ESDU 89009 provides a prediction method for full-span and part-span sealed controls that can also be used for elevators and rudders. Data for two-dimensional flow, assumed constant over the span... | |
| ESDU 89010 gives calculation sheets for estimating hinge moment coefficients for trailing-edge controls on a wing, tailplane or fin. Values to be entered on the sheets can be extracted from... | |
| ESDU 89011 introduces a computer program, provided as ESDUpac A8911, which calculates the lower natural frequencies of rectangular thin plates (thickness/shorter dimension ratio less than 0.05), either flat or with... | |
| ESDU 89012 presents the loss data for sudden contractions and expansions, orifice plates, valves (gate, globe, ball and diaphragm) and bends. In each case an equation is given for the... | |
| ESDU 89013 introduces a Fortran program, ESDUpac A8913. The program calculates the stiffnesses of laminated plates (or a sandwich panel) from the properties of the layers, with no restriction on... | |
| ESDU 89015 starts by setting out the completely general problem in terms of the equations of motion of the aircraft, the constraints on the state and control variables due to... | |
| ESDU 89017 provides evaluated thermophysical properties data for propan-2-ol (isopropyl alcohol). Equations, based on a critical evaluation of experimentaldata in the literature are given for the variation with temperature along... | |
| ESDU 89018 discusses the likely accuracy of measurements of liquid density to be found in the literature and explains how the value of uncertainty given against each predicted value of... | |
| ESDU 89019 tabulates density and molar volume for 49 aromatic hydrocarbons in the range C6 to C10 (in units of kg/cu m and cu cm/mol respectively) from near the melting... | |
| ESDU 89020 tabulates in SI units from the melting point to the critical point along the saturation line at fixed pressures data for: saturation temperature, liquid density, vapour specific volume,... | |
| ESDU 89021 sets out the basic equations used in ESDU 89023 to 89027 which present temperature distributions, and stresses and moments, in various structural elements due to aerodynamic heating on... | |
| ESDU 89022 defines quantities and gives equations required in estimating the temperature of a structure due to aerodynamic heating. The terms are specific heat capacity, thermal conductivity, thermal diffusivity, emissivity,... | |
| ESDU 89023 treats the transient situation of the variation of the temperature distribution through a thick plate insulated on one side when the aerodynamic heating temperature on the other side... | |
| ESDU 89024 treats the transient situation of the variation of the forces and moments in a thick plate insulated on one side when the aerodynamic heating temperature on the other... | |
| ESDU 89025 treats the transient condition of the variation of the surface stresses in a thick plate insulated on one side when the aerodynamic heating temperature on the other side... | |
| ESDU 89026 treats the transient situation of the variation of the temperature distribution in a thick plate insulated on one side when the aerodynamic heating temperature on the other side... | |
| ESDU 89027 gives equations for calculating the temperature and stresses at any point when the inner and outer surfaces are at different constant temperatures. They require a knowledge of the... | |
| ESDU 89028 gives a step-by-step procedure for force-balancing planar single degree of freedom linkages. Balance is achieved by the addition of counterweights so that the resulting centre of mass of... | |
| ESDU 89029 provides a simple semi-empirical correlation of experimental data from the literature for installed tailplane efficiency for both fin- and body-mounted cases. Efficiency here is installed lift-curve slope normalised... | |
| ESDU 89030 introduces a program, ESDUpac A8930, that predicts, following pump trip and/or valve operation, the changing values at a junction of liquid pressure and flow velocity, structural displacement, velocity... | |
| ESDU 89031 provides comprehensive guidance for the selection of surface treatments that improve the fatigue strength of steels primarily by inducing surface compressive stresses that inhibit the initiation and growth... | |
| ESDU 89032 extends methods of parameter identification in ESDU 87039 and ESDU 88011 that treated systems with measurement noise alone to deal with the case of a system subject to... | |
| ESDU 89033 presents axial and normal pressure force coefficient data obtained from a computed solution of the Euler equations for inviscid flow about spherically blunted tangent ogive and cone forebodies... | |
| ESDU 89034 gives an empirical method for estimating the maximum lift of aerodynamically smooth straight-tapered wings with or without camber and/or twist but with high lift devices undeflected. Any shape... | |
| ESDU 89036 is accompanied by a computer program, ESDUpac A8936, which calculates a difference noise spectrum in one-third octave bands which, when subtracted from a measured spectrum, will yield free-field... | |
| ESDU 89037 tabulates density and molar volumes for 32 alcohols (the normal straight-chain, C1 to C6 alcohols and their isomers). The tables are in units of kg/cu m and cu... | |
| ESDU 89038 summarises the advantages and disadvantages of reflux condensation in vertical tubes, in which the vapour enters the heat exchanger tube bundle at the bottom and the condensate flows... | |
| ESDU 89039 provides a method for predicting pressure drop based on an empirical correction applied to the adiabatic pressure drop which is calculated in three components: the friction component following... | |
| ESDU 89041 gives a graphical method for estimating overall and one-third octave band sound pressure levels as a function of observer distance and angle to the efflux plane, jet pipe... | |
| ESDU 89042 gives simple empirical methods of predicting the change in zero-lift angle and in pitching moment at zero-lift due to adding a fuselage of approximately circular section to a... | |
| ESDU 89043 gives guidance on selecting in given circumstances the most appropriate balancing technique to eliminate or reduce both the shaking force and the shaking moment on a planar linkage. | |
| ESDU 89044 gives guidance on the coefficient of friction to be expected in a wide range of industrial bearings. Where appropriate, a sketch gives, for a particular example of each... | |
| ESDU 89045 provides a step-by-step calculation procedure for predicting the minimum lubricant film thickness in concentrated contacts that occur, for example, in rolling element bearings, variable traction drives and meshing... | |
| ESDU 89046 presents the results of over 900 axial load fatigue tests extracted from the literature on low load transfer joints under constant or variable amplitude loading. A low load... | |
| ESDU 89047 gives simple semi-empirical methods for estimating the forces and moments on single or contra-rotating propellers inclined at angles up to 20 degrees with the local flow. The results... | |
| ESDU 89048 gives graphs of stress concentration factors plotted against appropriate geometric parameters. The data are for circumferential grooves of U- and wide or narrow flat-bottomed section in solid shafts... | |
| ESDU 89049 provides a step-by-step calculation method for estimating the loading and response, in both translational and torsional modes, due to the across-wind turbulence components. The loading is derived as... | |
| ESDU 89050 gives graphical data for peak and area-averaged mean forces on panels in infinite walls, panels near the free end of a semi-infinite wall, panels near a right-angled corner,... | |
| ESDU 89051 gives curves of constant amplitude crack propagation rate data for commercially pure titanium and 5 alloys (Ti-6Al-6V, Ti-4Al-3Mo-1V, Ti-5Al-2.5Sn, Ti-8Al-1Mo-1V and Ti-2.5Cu). The data are derived from sources... | |
| ESDU 89052 introduces a computer program, ESDUpac A8952, for computing the inelastic stress-strain curve, tangent and secant moduli, and the inelastic Poisson's ratio of a metallic material from limited commonly... | |
| ESDU 90001 gives methods for calculating the heat transfer coefficient in the post dry-out region (that is when the critical heat flux is exceeded and the liquid no longer wets... | |
| ESDU 90002 introduces a Fortran program, provided in both compiled and uncompiled forms as ESDUpac A9002, for calculating the flexural buckling strength, and the local and inter-rivet buckling stresses, of... | |
| ESDU 90003 provides evaluated thermophysical properties data for sulphur dioxide. Equations, based on a critical evaluation of experimental data in theliterature are given for the variation with temperature along the... | |
| ESDU 90004 introduces a computer program for calculating the combination of the pair of orthogonal bending moments and an end load, in the same ratios to each other as in... | |
| ESDU 90005 derives semi-empirical equations for the resonance frequencies that occur at subsonic speeds in wind-tunnels with walls having slots or circular perforations. Results from the equations for the first... | |
| ESDU 90006 assumes that the system is modelled as a set of coupled second-order differential equations with constant coefficients, and that a set of frequency response data is available from... | |
| ESDU 90007 gives methods for partially balancing single-degree-of-fre edom multi-bar linkages by adding counterweights rotating at constant speed. The methods are (a) Lanchester Balancer using two equal counter rotating weights... | |
| ESDU 90008 discusses the flow phenomena that occur in steady high subsonic flow over aerofoils and wings, and the prediction of the initial stages of shock-induced separation. The development of... | |
| ESDU 90009 presents the results of over 350 axial load fatigue tests extracted from the literature on the joints under variable amplitude loading (mainly the FALSTAFF loading sequence although the... | |
| ESDU 90010 provides a method that applies to a rigid aircraft at low angles of attack and relies on summing the separate contributions of the body, wing and tailplane with... | |
| ESDU 90012 discusses and illustrates the use of the energy height method to minimise time or fuel used in transferring from one (velocity, height) point to another. Energy height is... | |
| ESDU 90013 gives a semi-empirical method for thin uncambered and untwisted wings with streamwise or pointed tips and sharp leading-edges and unswept sharp trailing-edges. It applies for angles of attack... | |
| ESDU 90015 gives vapour pressure for 32 monohalo-, dihalo-, trihalo- and tetrahalomethanes. The data were obtained by a critical evaluation of experimental results in the literature fitted by a recently... | |
| ESDU 90016 introduces a computer program, ESDUpac A9016, to estimate the lower natural frequencies of flat, isotropic or orthotropic, rectangular or square plates. Any combination of shear and direct loading,... | |
| ESDU 90017 gives equations obtained from a critical evaluation of experimental data in the literature for the variation along the saturation line with temperature, for both the liquid and the... | |
| ESDU 90018 presents the results of over 150 axial load fatigue tests extracted from the literature on the joints under variable amplitude loading (the FALSTAFF loading sequence). A high load... | |
| ESDU 90019 gives vapour pressure for 55 mono-, di-, tri-, tetra-, penta-, and hexahaloethanes together with 7 azeotropic mixtures. The data were obtained by a critical evaluation of experimental results... | |
| ESDU 90020 provides a simple theoretically-based method for predicting the upwash at any point in the flow field ahead of the wing. The method, based on the "Yaggy-Rogallo" method, combines... | |
| ESDU 90022 gives three strategies for estimating the reaction forces at joints connecting rigid links of single-degree-of-fre edom, multibar, linkages. They are static force analysis, in which inertia forces are... | |
| ESDU 90023 provides a computerised method for estimating airframe noise in one-third octave bands over a frequency range set by the user. The OASPL is also computed. The polar and... | |
| ESDU 90024 develops a prediction procedure for pressure drop in annular/dispersed flow. It does not apply at the bottom of a condenser, where there is slug flow or the condensate... | |
| ESDU 90025 gives performance maps for straight axis diffusers with sharp transition from an inlet pipe with naturally-developing flow. They apply for an inlet Reynolds number (based on pipe diameter)... | |
| ESDU 90026 introduces a program for calculating the loadings on a beam of solid or hollow polygonal section that give a defined maximum allowable extreme fibre tensile (or equal compressive)... | |
| ESDU 90027 provides a method for the design and performance analysis of bearings that are steadily loaded or for which the load and/or speed vary slowly. A design procedure generates... | |
| ESDU 90028 presents crack propagation rate curves derived from experimental data extracted from the literature for pure titanium and various titanium alloys in a variety of environments. The environments are... | |
| ESDU 90029 provides information to assist in the application of the group of ESDU data on the prediction of the drag due to such excrescences as grooves, ridges and steps,... | |
| ESDU 90030 considers the flat plate (deflecting in a plane normal to the aerofoil surface) and flap (pivoting about a hinge on the aerofoil surface) types of unvented spoilers with... | |
| ESDU 90031 describes the circumstances under which fretting fatigue occurs in metals and provides guidance on avoiding it. Depending on the loading conditions, fretting can reduce the fatigue strength (to... | |
| ESDU 90033 is primarily concerned with the application of process integration to batch processes and other time-dependent systems, for example, the start-up of a continuous process, a multi-plant complete site,... | |
| ESDU 90035 provides methods for estimating the drag experienced by aircraft tyres running in a layer of water or slush (with specific gravity down to 0.8) on a runway. Configurations... | |
| ESDU 90036 provides procedures for the calculation of the across-wind response of structures arising from vortex shedding. It deals with structures of non-circular cross-sectional shape and is applicable to buildings,... | |
| ESDU 91001 gives background information and guidance on the values for various quantities needed in calculating the response of flexible structures. Axes systems used are defined and the equation of... | |
| ESDU 91003 uses a fracture mechanics approach to predict the axial load (tensile or compressive) at which delamination will occur in a laminated plate tapered in thickness by stopping off,... | |
| ESDU 91004 gives a semi-empirical method for estimating the derivative for an axisymmetric forebody-cylinder combination with or without boat-tailing and fins. Slender body theory provides an equation for the sum... | |
| ESDU 91006 gives vapour pressure for 17 monohalo-, dihalo-, trihalo-, and tetrahaloethylenes. The data were obtained by a critical evaluation of experimental results in the literature fitted by a recently... | |
| ESDU 91007 applies to missiles in which interference loads make a large contribution because of the small span-to-body-diamete r ratio; an axisymmetric body with mid-wing is considered at low angles... | |
| ESDU 91008 provides data to determine the minimum load to cause failure by rupture or maximum permissible permanent deformation of parallel-sided and tapered lugs with round or square ends under... | |
| ESDU 91009 provides a method that is based on determining the effective (increased) aspect ratio of the tailplane due to the end plate effect of the fins. ESDU 70011 is... | |
| ESDU 91010 describes the mechanism of galloping, that is an aeroelastic response in which changes in wind load due to structure response are in-phase with the structure velocity. The concepts... | |
| ESDU 91011 provides an estimation method for boiling heat transfer of multi-component mixtures, based on the method in ESDU 85041 for a single-component flow. After a discussion of the unique... | |
| ESDU 91012 is particularly applicable to lightly damped structures typical of those used in aerospace. The principal sources of damping (acoustic, material and structural) are discussed and typical values of... | |
| ESDU 91013 introduces computer programs to estimate the resonant frequencies and loss factors in any mode for beam or plate structures with damping treatment applied. ESDUpac A9113 deals with free-layer... | |
| ESDU 91014 gives a method that involves the calculation of two components: the increment in maximum lift coefficient due to flaps is added to the maximum lift coefficient for the... | |
| ESDU 91015 gives crack propagation rate curves plotted against stress intensity factor range for various values of stress ratio of the alloys 2090, 2091, 8090 and CP 271 in unclad... | |
| ESDU 91016 suggests a method of speeding up the calculation of the optimum flight path by the energy height method of ESDU 90012. Although programming the graphical methods used there... | |
| ESDU 91017 uses a flowchart to guide its user in the application of statistical techniques to the analysis of performance data from which all but random variability has been removed,... | |
| ESDU 91018 illustrates certain aspects of statistical analysis introduced in ESDU 91017 in relation to cruise specific air range. Before issuing guarantees to a customer, flight tests were carried out... | |
| ESDU 91019 illustrates certain aspects of statistical analysis introduced in ESDU 91017 applied to autoland touchdown dispersion. Two sets of data are analysed, one for the standard 3 degree glide... | |
| ESDU 91020 presents data on the variability of civil aircraft and engine performance quantities drawn from a report of the ICAO Standing Committee on Performance, and also more recent information... | |
| ESDU 91021 gives a method of estimating the boundary beyond which as either lift coefficient or Mach number is increased the turbulent boundary layer on the upper surface separates from... | |
| ESDU 91022 provides evaluated thermophysical properties data for nitrous oxide. Equations, based on a critical evaluation of experimental data in theliterature are given for the variation with temperature along the... | |
| ESDU 91023 develops a prediction procedure for annular/dispersed flow based on that used for vertical downflow in ESDU 90024. It does not apply to bubble or slug flow but in... | |
| ESDU 91024 presents a procedure for calculating the local (point) condensate film heat transfer coefficient at a prescribed vapour mass flux and the mean coefficient for the case when the... | |
| ESDU 91025 discusses models used to describe the rheology of time independent pseudohomogeneous non-Newtonian fluids (power- law, Bingham, Herschel-Bulkley and a generalised model due to Metzner and Reed); they are... | |
| ESDU 91026 presents a method for estimating the lift of a user-specified commercial needle-bearing roller mounted on a translating follower or a swinging follower and driven by a disc cam. | |
| ESDU 91027 discusses the probabilistic nature of non-destructive examination (NDE) to search for defects such as manufacturing flaws (for example, inclusions, porosity, weld defects) or cracks generated in service. This... | |
| ESDU 91028 provides a method based on the Nash and Bradshaw equation extended for the effects of compressibility. To evaluate the equation, both the pressure distribution and the development of... | |
| ESDU 91029 provides data for the chordwise variation of the magnification factor on the upper and lower surfaces of a family of aerofoils designed to combine a high drag-rise Mach... | |
| ESDU 91031 presents a method for estimating the derivatives based on apparent mass calculations that allow for the interference effects of body, wing and tailplane on the fin. The method... | |
| ESDU 91032 gives methods for estimating airborne distance for fixed-wing aircraft. The time taken is estimated as a function of the change in rate of sink between the screen and... | |
| ESDU 91034 tabulates density and molar volumes for 17 halomethanes. The tables are in units of kg/cu m and cu cm/mol respectively at 10 K intervals from near the melting... | |
| ESDU 91035 presents vapour pressure data for seven alkyl amides. The data were obtained by a critical evaluation of experimental results in the literature fitted by a recently developed correlation... | |
| ESDU 91037 provides details of a computer program that implements the calculation method of ESDU 85027 and provides a method for predicting the minimum lubricant film thickness in concentrated contacts... | |
| ESDU 91038 provides details of a computer program that implements the calculations method of ESDU 89045 and provides a method for predicting the minimum lubricant film thickness in concentrated contacts... | |
| ESDU 91039 presents results extracted from the literature showing the strength of welded joints under static load compared to the strength of the parent metal. The data cover ranges of... | |
| ESDU 91040 provides evaluated thermophysical properties data for carbon monoxide. Equations, based on a critical evaluation of experimental data in the literature are given for the variation with temperature along... | |
| ESDU 91041, which supersedes ESDU 68014, explains the analysis of samples of less than 30 to predict the behaviour of the population. The analysis includes the prediction of mean values,... | |
| ESDU 91042 presents a method that applies to delta, cropped delta, or rectangular wings mounted on an axisymmetric body at mid-height. It applies to Mach numbers between 1.2 and 5... | |
| ESDU 91043 presents methods for estimating speed-up factors for mean wind speeds over hills, embankments, escarpments and valleys. The methods treat all regions of a hill, including shelter regions near... | |
| ESDU 92001 presents modulus and loss factor for 27 damping materials in the form of reduced temperature nomograms which allow the effects of frequency and temperature on those properties to... | |
| ESDU 92002 provides an empirical method of estimating the lift and rolling moment due to upper-surface spoiler deflection on a wing with flaps deployed. The method is to determine the... | |
| ESDU 92003 recommends the Petukov equation for the prediction of the heat transfer in single-phase Newtonian flow, following a comparison of it and five other correlations with a database of... | |
| ESDU 92005 gives a direct method for finding the minimum allowable prime circle radius based on the criteria that the maximum pressure angle does not exceed a specified value and... | |
| ESDU 92006 examines those factors that affect the ease and safety with which an aircraft may be flown. For consideration of aircraft handling, aircraft are divided by class or role... | |
| ESDU 92007 gives a semi-empirical method applying to fins of small sweep (up to 20 degrees) for small sideslip angles up to Mach 0.7. From an analysis of limited experimental... | |
| ESDU 92008 describes the features of a viscous-coupled calculation method that are required to predict transonic flow over an aerofoil with some boundary layer separation. One particular method is considered... | |
| ESDU 92009 tabulates density and molar volumes for 39 haloethanes and 4 azeotropic mixtures. The tables are in units of kg/cu m and cu cm/mol respectively from near the melting... | |
| ESDU 92012 discusses the effects of methods of combustion on the potential for deposition and the consequences for efficiency. Mechanisms by which surfaces become contaminated with particles and deposits as... | |
| ESDU 92013 gives guidance on the selection of heat exchanger types for a given duty against various criteria; they include the general characteristics, together with such detailed aspects as the... | |
| ESDU 92014 gives methods for designing blended cam profiles meeting the criteria that the maximum pressure angle does not exceed a specified value and that profile undercutting is avoided. Each... | |
| ESDU 92015 introduces the process, indicating the parameters involved (shot material, size and velocity, and exposure time and component hardness) that affect the plastic deformation and residual compressive stresses. The... | |
| ESDU 92016 describes a range of established techniques for reducing the torque fluctuation in shafts that drive, or are driven by, planar linkages. The fluctuations result from inertial and gravitational... | |
| ESDU 92017 presents the results extracted from the literature of nearly 850 constant amplitude loading fatigue tests. Joints were: load-carrying and non load-carrying transverse cruciform, load-carrying and non load-carrying transverse... | |
| ESDU 92018 tabulates density and molar volume for 10 haloethylenes. The tables are in units of kg/cu m and cu cm/ mol respectively from near the melting point to within... | |
| ESDU 92019 presents the equations with varying degrees of simplification for the calculation of rate of climb of jet-powered or propeller-driven aeroplanes. It is primarily concerned with "steady-state climbs", that... | |
| ESDU 92020 gives a method that correlates measurements of airspeed changes in the airborne manoeuvre on the basis of energy considerations to yield changes in lift and in drag-minus-thrust between... | |
| ESDU 92021 uses the analysis of a set of measurements of approach speed and associated landing ground roll distance to illustrate the use of linear, two variable regression. Regression is... | |
| ESDU 92022 uses the analysis of a set of measurements of screen and touchdown speeds, rates of descent at the screen and touchdown, and airborne time to illustrate multiple linear... | |
| ESDU 92023 discusses the different propagation behaviour of short and long cracks; short cracks often do not display a threshold value of stress intensity factor range and propagate at higher... | |
| ESDU 92024 applies to a parallel-sided axisymmetric body with a truncated rear end and a straight-tapered mid-set wing in subsonic or supersonic flow at low angles of attack. The wing... | |
| ESDU 92026 provides a procedure for the design and performance analysis of the bearings with five or more identical equally-spaced rectangular recesses (or pockets) fed by identical capillary restrictors from... | |
| ESDU 92027 provides evaluated thermophysical properties data for nitric oxide. Equations, based on a critical evaluation of experimental data in the literature are given for the variation with temperature along... | |
| ESDU 92028 tabulates the viscosity of 25 halogenated methanes at saturation pressure, for temperatures from just above the melting point to approximately 0.9 of the critical temperature. Experimental data extracted... | |
| ESDU 92029 applies at subsonic and supersonic speeds to configurations with a body- or fin-mounted tailplane and a main fin in the plane of symmetry for angles of attack and... | |
| ESDU 92030 discusses the different propagation behaviour of short and long cracks; short cracks often do not display a threshold value of stress intensity factor range and propagate at higher... | |
| ESDU 92031 provides an empirical method for straight-tapered wings with leading-edge devices deployed, with or without the deployment of trailing-edge flaps, at freestream Mach numbers up to 0.25. The maximum... | |
| ESDU 92034 provides details of a computer program, ESDUpac A9234. It implements the calculation procedure of ESDU 82029. It allows performance analysis of an existing design, or the design of... | |
| ESDU 92035 provides details of a computer program, ESDUpac A9235, which implements the calculation procedure of ESDU 83004. It allows performance analysis of an existing design, or the design of... | |
| ESDU 92036 introduces ESDUpacs A9236 and B9236 for the calculation of response of structures due to respectively the along-wind and across-wind components of turbulence. The first program is based on... | |
| ESDU 92037 provides details of a computer program, ESDUpac A9237, that implements the calculation method of ESDU 92026. It allows performance analysis of an existing design, or the design of... | |
| ESDU 92038 gives equivalent lengths that may be used in place of the true length in the Euler buckling equation for a uniform section strut pinned at both ends, so... | |
| ESDU 92039 discusses the qualitative effects of control gaps on wing aerodynamic characteristics, explains the sources of drag, and considers the benefits of sealing. The effects of wing section and... | |
| ESDU 92040 is directed to making statistical methods of analysis accessible to engineering users. It summarises the basic statistical terms and principles involved and discusses techniques most commonly used. It... | |
| ESDU 92041 introduces a Fortran program (ESDUpac A9241) for calculating the shear stress distribution in the adhesive along a joint; it is assumed invariant across the width of the joint. | |
| ESDU 92042 introduces a program, ESDUpac A9242, for the design or performance assessment of ejectors (or jet pumps) in which the primary and secondary flows may be of the same... | |
| ESDU 92043 presents a method based on evaluating the various contributions to the pitching moment, namely, those due to the body alone and the wing alone, together with interference components... | |
| ESDU 92044 examines the replacement of an analogue controller element by an equivalent digital controller element while retaining for the new hybrid system performance characteristics that are acceptably similar to... | |
| ESDU 93001 presents a method for calculating values of compressive stress in the contact region between a disc cam and a roller follower at regular intervals during one rotation of... | |
| ESDU 93002 presents methods for designing blended cam profiles such that the resultant follower motion includes either a specified intermediate displacement precision point or a specified intermediate constant velocity component. | |
| ESDU 93003 provides evaluated thermophysical properties data for 1,1,1,2-tetrafluoroe thane (R134a). Equations, based on a critical evaluation of experimental data in the literature are given for the variation with temperaturealong... | |
| ESDU 93004 introduces a computer program that implements the calculation method of ESDU 90027. The program predicts the minimum lubricant film thickness (taking any misalignment into account), eccentricity ratio, the... | |
| ESDU 93005 introduces a computer program that implements the calculation methods of ESDU 84031 and 85028 and so considers both laminar and turbulent flow in a bearing with one or... | |
| ESDU 93006 introduces a computer program that implements the calculation methods of ESDU 84031, 85028 and 86008 for laminar or turbulent flow in a bearing with one or two grooves. | |
| ESDU 93007 applies to single or twin fins on aircraft at angles of attack up to 5 degrees and angles of sideslip up to 4 degrees. It treats a wider... | |
| ESDU 93008 gives data for all isomers up to C6, for 6 C7 isomers, 4 C8 isomers, 2 C9 isomers, and for the normal alcohols from C10 to C20. Experimental... | |
| ESDU 93009 presents vapour pressure data for all isomers (26 compounds) of aliphatic ketones up to C7, 13 aliphatic ketones between C8 and C15, mesityl and isomesityl oxides, and cyclo-butanone,... | |
| ESDU 93010 tabulates density and molar volumes for all isomers (26 compounds) of aliphatic ketones up to C7, 13 aliphatic ketones between C8 and C15, mesityl and isomesityl oxides, and... | |
| ESDU 93011 introduces a Fortran program which gives (i) the detailed distribution of deflection and either the moments and in-plane forces, or the stresses, or the strains, throughout the plate... | |
| ESDU 93012 tabulates the viscosity of 49 halogenated ethanes at saturation pressure, for temperatures from just above the melting point to approximately 0.9 of the critical temperature. Experimental data extracted... | |
| ESDU 93013 provides data for the rate of change with wind direction of the force components in the directions of the principal axes of the structure. The values are an... | |
| Graphs enable the buckling stress to be predicted of the cylinders when subjected to torsion alone. All cylinder lengths are covered, from infinitely long, through cylinders whose buckling is affected... | |
| In ESDU 80026 the reasons for estimating aircraft performance are described, the methods and data available in the ESDU Aircraft Performance Series are reviewed and a summary of the data... | |
| In most structural laminates analysis is simplified, stability is maximised, and distortion during manufacture is minimised if stacking sequences are used that ensure end load and shear, and bending and... | |
| Item No. 89014 provides a simple empirical means of estimating the normal force and pitching moment of axisymmetric forebody-cylinder combinations for angles of attack up to 90 degrees and Mach... | |
| Item No. 90034 provides details of a computer program for the calculation of normal force and pitching moment of axisymmetric bodies, both with and without conical boat-tailing, for angles of... | |
| Methods for calculating the pressure distribution on a two-dimensional aerofoil in attached viscous transonic flow have been developed at the RAE, Farnborough, a summary of that work (up to 1975)... | |
| The physical processes involved in a thermosyphon, whereby high rates of heat transfer can be obtained between surfaces that have only a small temperature difference between them, are described. Heat... | |
| This addendum to ESDU 82027 discusses the estimation of sideline noise in subjective noise metrics. ESDU 82027 gives a graphical method, and a computer program (ESDUpac A8727), for estimating the... | |
| This Data Item presents a number of digital optimization techniques for the parameter estimation of linear systems. The methods presented are based on the least-squares principle and apply to system... | |
| This introduction to unsteady aerodynamics provides a general background to illustrate current linearised theoretical methods. It includes an opening section to remind the user of the basic principles that underline... | |
| This is the fifth in an integrated group that deal with the stability and response of linear systems. ESDU 80018 deals with the function of the different system elements and... | |
| This is the fourth in an integrated group that deal with the stability and response of linear systems. ESDU 80002 considers the specification and measures of system performance which are... |
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