Reaction Wheel for pico & nano satellites

The compact reaction wheel is especially designed for attitude control used in pico or nano 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 permanentmagnet motors and ZFT in the field of reliable space electronics and software engineering.


Excellent solution for ambitious missions

Compactness

  • 20 x 20 x 20 mm (L x B x H)
  • < 20g

Efficiency

  • 5 V supply voltage
  • < 300mW power consumption at nominal speed

Precision

  • individually balanced to reduce vibration
  • self-calibrating control algorithm
  • Multiple optimization patterns

Robustness

  • Radiation up to 200Gy
  • -40°C to +85°C operating temperature

High performance density

  • 0,1mNm nominal torque
  • 19.000 rpm nominal speed
  • Momentum storage 2,0 mNms

Connectivity

  • UART
  • I2C
  • SPI
  • CAN
  • USB

Technical Construction

Extremely compact in a square space of 20 x 20 x 20 mm, the Reaction Wheel is especially designed for rough space conditions. The square construction makes space-saving integration possible and, with its low torque / weight ratio it provides maximum flexibility in the application. The efficiency, robustness and compactness characterize the Reaction Wheel.

Momentum storage 2,0 mNms

20 x 20 x 20 mm (L x B x H)

Designed for harsh space environment 

0,1mNm nominal torque

Flexible Interface

Situation aware control system

Hot restart failure recovery

Fire-and-forget control or programmed profile control

Technical data

  

Performance

 
  

Momentums storage (@19000 rpm)

2,0 mNms

  

Nominal rotation speed

19000 rpm

  

Nominal torque

0,1 mNm

  

Mechanical

 
  

Mass

< 20 g

  

Dimension

20 x 20 x 20 mm

  

Electrical

 
  

Supply voltage

5 V

  

Operating voltage

3,3 - 8,4 V

  

Power consumtion at nominal speed

< 300 mW

  

Power consumtion at peak

< 1000 mW

  

Environmental

 

  

Nominal ambient temperature

0 °C

  

Operating temperature

-40 °C to +85 °C

  

Survival temperature

-60 °C to +100 °C

  

Operating time

25000 h


System

For a 360 ° alignment of the satellite, the Reaction Wheels can be positioned in various arrangements.
The most common variants are shown below:

Tetrahedron on board

Wheels on grid


Downloads


Contact us

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If so, please contact us directly. We look forward to hearing from you!

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