Reaction Wheel RW250
EXA (Astro-und Feinwerktechnik)
The RW250 is a reaction wheel for small satellites, featuring integrated wheel drive electronics, various operation modes, and extensive housekeeping data.
Typed specifications23 values
Discloses 5 of 10 fields engineers filter by in this category (category median 5).
- Mass
- 2 700 g as published, mode unspecified · vendor page (catalogue a 2 700 g max
- Envelope (L×W×H)
- 180mm*180mm*82mm datasheet p.1 180 mm
- Angular momentum storage
- 4 N·m·s nom. · 5000rpm · datasheet p.1 4 N·m·s @5000rpm | 4 N·m·s 5000rpm
- Max torque
- 100 mN·m Nominal · datasheet p.1 100 mN·m nom.
- Speed range
- 5 000 rpm Nominal Rotation Speed · datasheet p.1 5 000 rpm Maximum Rotation Speed | 5 000 rpm max · maximum rotation speed | 5 000 rpm nom.
- Supply voltage
- 23–34 V as published, mode unspecified · vendor page (catalogue a
- Power consumption
- 2.5 W as published, mode unspecified · vendor page (catalogue a
- Operating temperature
- -20 °C min · datasheet p.1 50 °C max | -20–50 °C
- Design lifetime
- 7 years datasheet p.1
- Survival temperature
- -40 °C product page
- Continuous (nominal) torque
- 100 mN·m printed 0.1 Nm · datasheet p.1
- Nominal operating speed
- 5 000 rpm datasheet p.1
- Flywheel moment of inertia
- 0.008 kg·m² 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 supplier17 lines, in the manufacturer's own wording
- Angular momentum
- 4.0 Nms @ nominal speed
- Nominal rotation speed
- 5000 rpm
- Nomial reaction torque
- 0.1 Nm Max. commandable deliverable output torque over the whole speed range
- Supply voltage
- 23 to 34 V
- Power consumption
- ≤ 2.5 W Stand by (motor off)
- Power consumption (2)
- ≤ 7.0 W @ 1500 rpm
- Power consumption (3)
- ≤ 13 W @ 5000 rpm
- Power consumption (max)
- 100 W Maximum (max. torque/max. speed)
- Mass
- ≤ 2.7 kg
- Moment of inertia
- 7.65x10-3 kg m2 Rotating mass
- Dimensions
- Height: 81.6 mm Diameter: 180 mm
- Operation
- -20 °C to +50 °C
- Start-up
- -30 °C to +60 °C
- Survival temperature
- -40 °C to +70 °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 RW250 is designed for small satellites, providing precise attitude control. It incorporates integrated wheel drive electronics with latch-up protection, ensuring robust operation. The wheel offers different operation modes for speed and acceleration, utilizing model-based controllers for high torque and speed stability with low noise. It provides extensive housekeeping data, including speed, voltage, current, and temperatures, allowing for comprehensive monitoring. The RW250 also features internal compensation of friction and time delays, contributing to its accuracy. Its mechanical design, high level of alignments, and balancing result in low emitted vibrations. The product is designed for a lifetime of over 7 years in Low Earth Orbit (LEO) and has a storage time of more than 3 years, including 240 hours of ground operation.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.