satbase

Cyber Reaction Wheel 2

Flight proven TRL 9
Cyber Reaction Wheel 2 image 1

Overview

The compact cyber reaction wheel 2 is especially designed for attitude control used in 1-8 U satellites. Due to its cube shape with integrated electronic control it can be used in several configurations. The reaction wheel is provided with vacuum-rated bearings and components resisting radiation terms up to 200 Gy. Profiting from the experience of WITTENSTEIN cyber motor in the field of precise small permanent magnet servo systems and ZFT in the field of reliable space electronics and software engineering, the cyber reaction wheel 2 is space proven.

The products offers 2.0mNms of angular momentum storage with the cube shape of just 20x20x20 mm. A high dynamic acceleration and precise sensor less controlling offer high robustness, low vibration and fast maneuvers. For commissioning, WITTENSTEIN cyber motor offers a reaction wheel starter kit, whereby the reaction wheel can be put into operation within a few moments using a PC and the MotionGUI 2 graphical user interface. This also allows diagnostics, optimization and parameterization to be carried out.

Specifications

Parameter Value
Overview
Name Cyber Reaction Wheel 2
Company WITTENSTEIN cyber motor GmbH
Category Reaction Wheel
CubeSat form factor Yes
Flight proven Yes
TRL

Flight proven in a successful mission

9
Mechanical
Dry Mass 0.03kg
Envelope Shape Cuboid
Length 20mm
Width 20mm
Height 20mm
Electrical
Input Voltage Range 3–8.8V
Input Voltage (Nominal) 5V
Power Consumption
Typical

At 8.000 rpm.

0.2W
Peak

Adjustable.

≤0.65W
Data Interfaces

Integrated drive electronics.

I2C, SPI, UART
Performance
Angular Momentum (Nominal)

At nominal voltage.

0.002N m s
Rotor Speed (Maximum) ≤20000rpm
Environmental
Operating Temperature -40–85°C
Survival Temperature -60–100°C
TID Tolerance

Absorbing material not specified.

>20krad(Si)
Reliability
Design Life 5years
Pricing and procurement
Customization / NRE Unknown

Files

Datasheet PDF · 576 KB · Nov 10, 2026