Reaction Wheel RW90
EXA (Astro-und Feinwerktechnik)
The RW90 is a reaction wheel designed for small satellites, featuring integrated drive electronics, multiple operation modes, and high torque and speed stability.
Typed specifications23 values
Discloses 5 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 900 g max · datasheet p.1 900 g max · wheel mass
- Envelope (L×W×H)
- 103mm*101*80m datasheet p.1 103mm*101mm*80mm dimensions
- Angular momentum storage
- 0.35 N·m·s nom. · 7800rpm · datasheet p.1 0.35 N·m·s @7800rpm | 0.35 N·m·s 7800rpm
- Max torque
- 15 mN·m nom. · datasheet p.1 15 mN·m as published, mode unspecified
- Speed range
- 6 000 rpm nom. · datasheet p.1 7 800 rpm | 7 800 rpm max | 7 800 rpm max · maximum rotation speed
- Power consumption
- 1.8 W as published, mode unspecified · vendor page (catalogue a
- Operating temperature
- -20 °C min · datasheet p.1 50 °C max | -20–50 °C operational temperature range
- Design lifetime
- 7 years datasheet p.1 7 years lifetime hardware, printed 7
- Survival temperature
- -40 °C product page
- Continuous (nominal) torque
- 15 mN·m nominal torque, printed 0.015 Nm · datasheet p.1
- Nominal operating speed
- 6 000 rpm nominal rotation speed · datasheet p.1
- Flywheel moment of inertia
- 0 kg·m² moment of inertia · datasheet p.1
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 supplier15 lines, in the manufacturer's own wording
- Angular momentum
- 0.35 Nms @7800 rpm
- Nominal rotation speed
- 6000 rpm
- Nomial reaction torque
- 0.015 Nm Max. commandable deliverable output torque over the whole speed range
- Power consumption
- ≤ 1.8 W Stand by (motor off)
- Power consumption (2)
- ≤ 2.7 W @ 3000 rpm
- Power consumption (3)
- ≤ 3.5 W @ 6000 rpm
- Power consumption (max)
- 15 W Maximum (max. torque/max. speed)
- Moment of inertia
- 4.35 x10-4 kgm2 Rotating mass
- Dimensions
- 100 mm x 100 mm x 60 mm
- Operation
- -30 °C to +60 °C
- Start-up
- -30 °C to +60 °C
- Survival temperature
- -40 °C to +65 °C
- Data interface
- RS485/RS422
- Design lifetime
- > 7 years In LEO
- Storage time
- > 3 years (incl. 240 h of ground operation)
About
The Reaction Wheel RW90 is an attitude control component specifically developed for small satellites. It incorporates integrated wheel drive electronics with latch-up protection, ensuring robust operation. The device offers different operation modes for speed and acceleration, managed by model-based controllers, which allows for precise attitude adjustments. Key features include high torque and speed stability, resulting in low noise operation, and the provision of extensive housekeeping data such as speed, voltage, current, and temperatures. It also includes internal compensation for friction and time delays to enhance performance. The mechanical design, coupled with high levels of alignment and balancing, contributes to low emitted vibrations. The RW90 is designed for a design lifetime of over 7 years in Low Earth Orbit (LEO) and a storage time of over 3 years (including 240 hours of ground operation).
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.