400 mNms Microsatellite Reaction Wheel
Sinclair Interplanetary (Rocket Lab)
High-torque, radiation-hardened wheel for high-agility remote sensing or science microsatellites.
Typed specifications26 values
Discloses 6 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 770 g heavy rotor · datasheet p.2019
- Envelope (L×W×H)
- 110 mm dia x 48 mm high datasheet p.2019
- Angular momentum storage
- 0.4 N·m·s nom. · nominal, heavy rotor · datasheet p.1 0.4 N·m·s heavy rotor
- Max torque
- 100 mN·m ±100 mNm at nominal momentum · datasheet p.1 100 mN·m at nominal momentum
- Supply voltage
- 24 V min · Nominal · datasheet p.2019 34 V max · Nominal | 24–34 V nominal; +75 V options available | 24–34 V nom.
- Data interface
- RS-485 Command / Telemetry · datasheet p.1 RS-485 redundant RS-485
- Operating temperature
- -40 °C min · datasheet p.2019 70 °C max | -40–70 °C operating
- Radiation tolerance (TID)
- 60 krad Total Dose, with LDRS testing · datasheet p.0 60 krad min · > 60 krad Total Dose, with LDRS testing | 60 krad min · Total Dose
- Wheels in the unit
- 1 datasheet p.1
- Bearing type
- hybrid diamond coated hybrid ball bearings · datasheet p.1
- Random vibration
- 20 g RMS min · >20 gRMS · datasheet p.1
- Flight heritage
- Mechanical design from RW3-1.0, with 52 Units on-orbit. datasheet p.2019
- Drive electronics
- integrated built-in control CPU · datasheet p.1
- Control modes
- speed datasheet p.1 torque | current
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier11 lines, in the manufacturer's own wording
- Angular momentum capacity
- 400 mNms
- Equivalent cmg performance
- 0.4 Nms CMG at 22.5 deg/sec gimbal rate
- Target application
- High-agility remote sensing / science microsatellites
- Design focus
- High torque, radiation hardness
- Control interface
- Digital serial bus, commandable speed/momentum/torque
- Momentum
- 0.4 Nms
- Torque
- ±100 mNm at nominal momentum
- Dimensions
- 110 mm dia x 48 mm high
- Mass
- 770 g
- Supply voltage
- 24 V to 34 V
- Operating temperature
- −40°C to +70°C
About
Sinclair Interplanetary pioneered high-reliability vacuum-lubricated reaction wheels for picosatellites, nanosatellites and microsatellites, with a built-in digital processor commandable over a serial bus for speed, momentum or torque, plus digital telemetry on speed, temperature, voltage, current and other health parameters. The 400 mNms Microsatellite Wheel is optimized for torque and radiation hardness. It can deliver performance equivalent to a 0.4 Nms control moment gyro with a 22.5 deg/sec gimbal rate, at much reduced mass and complexity, and is designed for high-agility remote sensing or science microsatellites.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.