HARDWARE / PRODUCTUpdated 25 Jul 2026

RW400

AAC Clyde Space
RW400

The RW400 is a reaction wheel designed for small satellite missions, offering high reliability, adaptability, and accuracy for precise pointing.

Typed specifications42 values

Discloses 8 of 10 fields engineers filter by in this category (category median 5).

Mass
197 g
15 mN.m.s momentum storage variant · datasheet p.2 210 g 30 mN.m.s momentum storage variant  |  375 g 50 mN.m.s momentum storage variant  |  197 g one of three versions: 197 / 210 / 375 g  |  210 g one of three versions: 197 / 210 / 375 g  +1
Envelope (L×W×H)
50 x 50 x 27 mm
datasheet p.2
Angular momentum storage
0.015 N·m·s
+/- 15 mN.m.s version · datasheet p.2 0.03 N·m·s +/- 30 mN.m.s version  |  0.05 N·m·s +/- 50 mN.m.s version
Max torque
8 mN·m
as published, mode unspecified · vendor page (catalogue a 12 mN·m min · > 12 mN.m braking  |  8 mN·m max · +/- 8 mN.m
Speed range
5 000 rpm
product page 5 000 rpm max · maximum rotation speed
Supply voltage
5 V
nom. · typ. supply voltage · datasheet p.2 2.3 V min · Logic supply voltage  |  4.5 V min · Supply voltage  |  5.1 V max · Logic supply voltage  |  5.25 V max · Supply voltage  +3
Power consumption
1 W
Nominal · datasheet p.3 0.751 W  |  1.9 W peak, typ.  |  0.075 W max · idle  |  15 W max · peak, max.  +2
Data interface
I2C
datasheet p.1 RS-422 bidirectional RS422  |  RS-422
Operating temperature
-40–60 °C
datasheet p.2
Radiation tolerance (TID)
36 krad
datasheet p.1 36 krad min · >36 krad (Si)
Wheels in the unit
1
datasheet p.1
Peak power
1.9 W
peak, typ. · datasheet p.2 15 W max · peak, max.
Satellite class
CubeSat
designed for 6 - 12U CubeSat platforms · datasheet p.1 microsat 10-100 kg
Drive electronics
integrated
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
Product name
Trillian-1 (RW400)
Application
Small Satellite missions
Key features
High reliability, adaptability, and accuracy
Total momentum storage
+/- 15, +/- 30, +/- 50 mN.m. s
Maximum torque
+/- 8 mN.m
Maximum rotation speed
5000 rpm
Control accuracy
+/- 1 % of target rpm
Dimensions
50 x 50 x 27 mm
Mass
197 / 210 / 375 g
Operating temperature
-40 to +60 °C
Radiation tolerance
>36 krad (Si)
Supply voltage
4.5 V (Min), 5.0 V (Typ), 5.25 V (Max)
Logic supply voltage
2.3 V (Min), 3.3 V (Typ), 5.1 V (Max)
Bus logic level voltage
3.3 - 5.1 V
Idle Power
751 mW (Max)
Nominal Power
1000 mW (Typ)
Peak Power
1900 mW (Typ), 15000 mW (Max)

About

The Trillian-1 reaction wheel, also referred to as RW400, provides high reliability, adaptability, and accuracy, making it a one-of-a-kind product for Small Satellite missions. Reaction wheels are critical components in Attitude Determination and Control Systems (ADCS) for spacecraft, enabling precise pointing and attitude adjustments by generating torque. While the page provides a brief summary of the RW400, it also lists several other related ADCS products from AAC Clyde Space, including various antennas, GNSS receivers, integrated ADCS units, magnetometers, magnetorquers, gyroscopes, and star trackers, highlighting the company’s comprehensive offerings in satellite attitude control.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.aac-clyde.space ↗

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