Reaction wheels module
SPUTNIX
A 4-flywheel reaction wheel module (SXC-FW4-02) for CubeSat 3-axis attitude control, integrating drivers and control electronics on a single PC/104 card.
Technical specifications
- Model
- SPUTNIX SXC-FW4-02
- Feature
- Complete 3-axis angular rate actuators for CubeSat satellite
- Feature
- Easily integrates with SPUTNIX platforms
- Feature
- Four brushless DC motors with vacuum-rated bearings
- Feature
- Wide power supply range
- Feature
- Momentum and current control algorithms
- Feature
- Voltage, current and temperature sensors for each motor
- Feature
- CAN interface for each separate driver
- Feature
- Rich telemetry and commands protocol
- Feature
- Bootloader with in-flight firmware update
- Configuration
- Increased maximum rotation speed and momentum
- Configuration
- CAN bus data rate
- Dimensions (w/o PC104 connector)
- 97.5 x 97.5 x 80 mm (±1mm)
- Mass
- 580 ± 20 g
- Supply voltage
- 5..12V (up to 15V on demand)
- Power consumption at 0 rpm
- <0.8 W (all 4 motors at 0 rpm)
- Power consumption at maximum
- <12 W (all 4 motors at 5000 rpm)
- Peak current consumption
- up to 1.4 A per motor (0 to 5000 rpm)
- Data interfaces
- CAN2.0B 1Mbit/s
- Data protocol
- UniCAN (Sputnix)
- Motor speed range
- ±5000 RPM (can be increased on demand)
- Speed control accuracy
- <10 RPM
- Max torque (X/Y/Z projections)
- not less than 8.8/8.8/4.5 mN*m (can be increased to 22.0/22.0/11.2 mN*m on demand)
- Full torque (@5000 RPM, X/Y/Z)
- ±14.5/14.5/7.7 mN*m*s (can be increased to ±33.5/33.5/19.2 mN*m*s on demand)
- Self telemetry
- For each motor - rpm, torque, current, voltage
- Operating environment
- air, vacuum
- Operating temperature range
- -30...+50°C
- Storage temperature
- -40..+60°C
- Mechanical vibration
- 10g (request full test report)
- Mechanical shock
- 50g (request full test report)
About
The SPUTNIX SXC-FW4-02 reaction wheels module is an autonomous actuator module of four flywheels with drivers and control electronics, designed for integration into 3U or larger nanosatellites. The flywheels and electronics are balanced and calibrated, providing enough torque to rotate the nanosatellite. It uses a single PC/104 connection with power and CAN buses; each flywheel driver can be driven separately with its own CAN ID. The module is designed for “off the shelf” use with the SPUTNIX SXC-MB-04-ADC ADCS controller.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
