cyber® reaction wheel 2 for pico & nano satellites
The compact cyber® reaction wheel 2 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 permanent magnet motors and ZFT in the field of reliable space electronics and software engineering.
Project NetSat
A complete observation of an object without blind spots requires the combination of images from different perspectives. We also want to avoid hidden points when observing the Earth, in order to set new standards in the three-dimensional observation of our planet and to be better positioned for future communication networks. The Centre for Telematics in Würzburg has developed four CubeSat mini-satellites (mass <4kg) for this purpose and launched them on 28 September 2020 from the Plessezk Cosmodrome into an orbit 600 km above the Earth using a Soyuz rocket. On board for each satellite are six reaction wheels from WITTENSTEIN cyber motor. A radio link enables data exchange between the smallest satellites, which allows various manoeuvres to be carried out. The cyber® reaction wheel 2 takes over the position control in x-, y- and z-direction.
Excellent solution for ambitious missions
Compactness
- 20 x 20 x 20 mm (L x W x H)
- < 30g
Efficiency
- 5 V supply voltage
- 480 mW rated power consumption @2 mNms
Precision
- Individually balanced to reduce vibration
- Self-calibrating control algorithm
- Multiple optimization patterns
Robustness
- Radiation up to 200 Gy
- -40°C to +85°C operating temperature
High performance density
- Momentum storage 2,0 mNms
- Max. rotation speed: 18.000 rpm
- Peak torque: 0,4 mNm
Connectivity
- UART
- I2C
- SPI
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 W x H)
Designed for harsh space environment
0,4mNm peak torque
Flexible Interface
Situation aware control system
Hot restart failure recovery
Fire-and-forget control or programmed profile control
Technical data
Performance | |||
Momentum storage (@18.000 rpm) | 2,0 mNms | ||
Maximum rotation speed | 18.000 rpm | ||
Peak torque | 0,4 mNm | ||
Mechanical | |||
Mass | < 30 g | ||
Dimension | 20 x 20 x 20 mm | ||
Electrical | |||
Supply voltage | 5 V | ||
Operating voltage | 3,3 - 8,4 V | ||
| Rated power consumption (@2 mNms) | 480 mW | ||
| Peak power consumption (configurable) | <1500 mW | ||
Environmental |
| ||
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
Reaction wheels on grid
cyber® reaction wheel starter kit
For commissioning, we offer the cyber® reaction wheel starter kit, whereby the reaction wheel can be put into operation within a few moments using a PC and the cyber® reaction wheel assistant graphical user interface. This also allows diagnostics, optimization and parameterization to be carried out.
Downloads
Contact us
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If so, please contact us directly. We look forward to hearing from you!