CMG-20m Control Moment Gyroscope
Tensor Tech
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CMG-10m is a variable-speed, single-gimbal Control Moment Gyroscope (CMG) suitable for 3U CubeSats. Unlike traditional CMGs driven by two or three motors, this CMG is driven by only one spherical motor, making it capable of minimizing into a CubeSat form factor. As an attitude actuator component, the CMG-10m can provide Torque and Speed modes through commands from the user’s onboard computer (OBC) or ADCS computer.
Furthermore, the CMG-10m has been designed to fit within the so-called “tuna can” of CubeSat structures, minimizing its volume within the satellite and enabling missions with larger payloads.
The user’s control system design can be simplified by adopting the torque mode, but requires a tumbling rate of < 1 deg/second. The speed mode allows the user to manipulate the inner rotor speed and the gimbal angle. It is designed for advanced users who independently derive the CMG steering and control laws.
FEATURES
- High torque-to-power ratio compared with reaction wheels
- Compact design allows for installation in a tuna can
- Comprehensive software support and free technical support
- Soft error and hard error fault detection
- Magnetic leakage flux shielded with Ni-iron Alloy
- Low jitter (micro-vibration) - ISO1940 G0.4 @ 8000 rpm
FLIGHT HERITAGE
- The system achieved flight heritage in 2022.
| Parameter | Value |
|---|---|
| Lead Time | 3 to 6 months |
| Angular Momentum Storage | < 10 mNms for 2-axis (adjustable) |
| Torque | < 1 mNm for 2-axs (adjustable) |
| Inner rotor speed control accuracy | < 5 rpm |
| Tilting angle control accuracy | < 1 deg |
| Rotor imbalance | ISO 1940 G0.4 |
| Power consumption | @ 5V bus < 1W |
| Power consumption | @ 3.3V bus < 1W |
| Form Factor | Tuna-can |
| Form Factor | 0.1U |
| Mass | <250g |
| Optional | GNSS system and 3-axis magnetorquers |
- High torque-to-power ratio compared with reaction wheels
- Compact design allows for installation in a tuna can
- Comprehensive software support and free technical support
- Soft error and hard error fault detection
- Magnetic leakage flux shielded with Ni-iron Alloy
- Low jitter (micro-vibration) - ISO1940 G0.4 @ 8000 rpm
- The system achieved flight heritage in 2022.
CMG-10m is a variable-speed, single-gimbal Control Moment Gyroscope (CMG) suitable for 3U CubeSats. Unlike traditional CMGs driven by two or three motors, this CMG is driven by only one spherical motor, making it capable of minimizing into a CubeSat form factor. As an attitude actuator component, the CMG-10m can provide Torque and Speed modes through commands from the user’s onboard computer (OBC) or ADCS computer.
Furthermore, the CMG-10m has been designed to fit within the so-called “tuna can” of CubeSat structures, minimizing its volume within the satellite and enabling missions with larger payloads.
The user’s control system design can be simplified by adopting the torque mode, but requires a tumbling rate of < 1 deg/second. The speed mode allows the user to manipulate the inner rotor speed and the gimbal angle. It is designed for advanced users who independently derive the CMG steering and control laws.
FEATURES
FLIGHT HERITAGE
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