The Scalable SIRU™ combines innovation and high reliability – with 100 percent mission success in more than 26 million on-orbit hours and 147 billion miles traveled – for precision performance on space missions.
The Hemispherical Resonator Gyro (HRG) sensor on the Scalable SIRU™ is composed of three simple machined quartz parts—an outer shell, a high-Q vibrating hemispherical resonator and an inner shell. The quartz construction of the HRG is inherently stable, impervious to aging effects, and naturally radiation hardened. Operating in a completely evacuated hermetically sealed case, the HRG sensor is the ideal gyro for space applications.
Scalable SIRU™ applications
The Scalable SIRU™ is the spacecraft manufacturer's choice for sensor pointing/stabilizati
on and spacecraft attitude control on demanding long-term space missions, including:
Earth orbits at all altitudes/angles
Interplanetary missions
Deep space missions
Scalable SIRU™ advantages
Proven high reliability and long life, due to the simple HRG sensor design
Ultra-low angle random walk and inherent freedom from dead band
Fault-tolerant, redundant system architecture with cross-strapped HRGs and electronics, helping to ensure the success of missions lasting 15 or more years
Demonstrated gyro capability, providing an inertially stable, low noise, wide bandwidth reference
Radiation hardened sensors and electronics that operate reliably when subjected to long-term radiation exposure in space
Scalable SIRU™ heritage
The space-qualified Scalable SIRU™ evolved from the heritage Core SIRU™. Together, these systems have operated in space since 1996 for over 26 million hours with 100 percent mission success. Our heritage systems have been launched more than 132 times and have traveled over 147 billion miles while used for NASA, Department of Defense, commercial and international space applications, including: Deep Impact, MESSENGER, Cassini, NEAR, GLAST, EOS, Geolite, Aura, Aqua, KOMPSAT 1, GOES, 601-HP, 702 bus, TDRS, GPM, WGS, EchoStar, IKONOS, AEHF, A2100 bus, 1300 bus, STAR bus, MUOS, SBSS, Worldview, Herschel, GeoEye, TerreStar and Landsat.
Scalable SIRU™-L Configuration
The Scalable SIRU™-L is a variant configuration that has the same hardware and associated reliability as the Scalable SIRU™. The Scalable SIRU™-L has streamlined calibration and test processes that lead to a shorter delivery schedule and lower cost compared with the standard Scalable SIRU™.
The Scalable SIRU™ combines innovation and high reliability – with 100 percent mission success in more than 26 million on-orbit hours and 147 billion miles traveled – for precision performance on space missions.
The Hemispherical Resonator Gyro (HRG) sensor on the Scalable SIRU™ is composed of three simple machined quartz parts—an outer shell, a high-Q vibrating hemispherical resonator and an inner shell. The quartz construction of the HRG is inherently stable, impervious to aging effects, and naturally radiation hardened. Operating in a completely evacuated hermetically sealed case, the HRG sensor is the ideal gyro for space applications.
Scalable SIRU™ applications
The Scalable SIRU™ is the spacecraft manufacturer's choice for sensor pointing/stabilization and spacecraft attitude control on demanding long-term space missions, including:
- Earth orbits at all altitudes/angles
- Interplanetary missions
- Deep space missions
Scalable SIRU™ advantages
- Proven high reliability and long life, due to the simple HRG sensor design
- Ultra-low angle random walk and inherent freedom from dead band
- Fault-tolerant, redundant system architecture with cross-strapped HRGs and electronics, helping to ensure the success of missions lasting 15 or more years
- Demonstrated gyro capability, providing an inertially stable, low noise, wide bandwidth reference
- Radiation hardened sensors and electronics that operate reliably when subjected to long-term radiation exposure in space
Scalable SIRU™ heritage
The space-qualified Scalable SIRU™ evolved from the heritage Core SIRU™. Together, these systems have operated in space since 1996 for over 26 million hours with 100 percent mission success. Our heritage systems have been launched more than 132 times and have traveled over 147 billion miles while used for NASA, Department of Defense, commercial and international space applications, including: Deep Impact, MESSENGER, Cassini, NEAR, GLAST, EOS, Geolite, Aura, Aqua, KOMPSAT 1, GOES, 601-HP, 702 bus, TDRS, GPM, WGS, EchoStar, IKONOS, AEHF, A2100 bus, 1300 bus, STAR bus, MUOS, SBSS, Worldview, Herschel, GeoEye, TerreStar and Landsat.
Scalable SIRU™-L Configuration
The Scalable SIRU™-L is a variant configuration that has the same hardware and associated reliability as the Scalable SIRU™. The Scalable SIRU™-L has streamlined calibration and test processes that lead to a shorter delivery schedule and lower cost compared with the standard Scalable SIRU™.
