Inertial Reference Unit (IRU) Type III-C
| Registration date | 3/20/2014 |
|---|---|
| JAXA development group | Research Unit I, Research and Development Directorate |
| View diagram | See Attachment 1 |
| Environmental resistance | See Attachment 2 |
| Patent number (publication number) |
N/A |
| Reference | N/A |
| Satellite and launch date | To be supplied after launch |
| Note | N/A |
Manufacturer
Mitsubishi Precision Company, Limited
Kamakura-shi, Kanagawa, Japan
https://www.mpcnet.co.jp/e/index.html
Features
- Mitsubishi precision's TDG (Tuned Dry Gyroscope) is long life and superior accurate inertial rate sensor for satellite. Enabling angular velocity of orthogonal 2 axes.
- Compact size and light weight
- High reliability, Long life
- Up to severe environmental condition
- Low power comsumption
- 2 TDGs configuration is available (option)
Applications
High precision, Hlgh reliability and Long life Rate sensor for satellite
Specifications
| Item | Values |
|---|---|
| Composison | 3 TDGs × 2 axes (redundant) or 2 TDGs × 2 axes (available) |
| Linear Range (Measurement Range) |
±4.0 deg/s |
| Polarity Range (Measurement Range) |
±10.0 deg/s |
| Scale Factor | 0.05 arcsec/pulse |
| Short Term Stability | <0.006 deg/h (3σ) |
| Noise Equivalent Angle | <1.0 arcses p-p |
| Disturbance Force | <0.2 N @155Hz (0.05 N : option) |
| Disturbance Torque | <0.02 Nm @155Hz (0.005 Nm : option) |
| Operating (Temperature) |
-10 °C to +50 °C |
| Turn-on (Temperature) |
0 °C to +50 °C |
| Power(3TDG on) | <36 W nominal |
| Bus Voltage | 30 V to 52 V |
| Size | 208 mm × 218 mm × 176.4 mm (Typical) |
| Footprint | 208 mm × 218 mm |
| Mass | 6.6 kg (Typical) |
