Reaction Wheel RW25
EXA (Astro-und Feinwerktechnik)
The RW25 is a compact reaction wheel designed for nano-satellite applications, featuring integrated electronics for independent operation via a digital interface.
Key figurescomparable across the catalogue
- Mass
- 0.2 kg
- Power
- 2.8 W
- Largest dimension
- 50 mm
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Angular momentum
- 30 mNms
- Nominal rotation speed
- 5000 rpm
- Nomial torque (max. commandable)
- 2 mNm (more by design possible)
- Communication
- SPI preferred (CAN possible)
- Supply voltage
- 5 V
- Maintaining nominal rotation speed
- < 1.5 W
- Maximum consumption (max. torque @ max. speed)
- < 2.8 W
- Mass
- 200 g
- Dimension single wheel
- 50 mm x 50 mm x 25.5 mm
- Operation
- -20 °C to +50 °C
- Non-operation
- -40 °C to +65 °C
- Storage time
- 2 years (includes up to 240 hours of ground operations)
- Design change flexibility without radical design change (mass, power may change)
- Increased/decreased angular momentum and torque possible
About
The Reaction Wheel RW25 is a recent development from ASTROFEIN, specifically engineered for nano-satellite applications. It incorporates integrated electronics, enabling independent operation through its digital interface, with SPI being the preferred communication protocol (CAN also possible). The device is designed for a nominal rotation speed of 5000 rpm and can provide a nominal torque of 2 mNm, with higher torque possible by design. It operates on a 5V supply voltage and has a low power consumption, ranging from less than 1.5 W for maintaining nominal rotation speed to less than 2.8 W at maximum torque and speed. Mechanically, it is very compact and lightweight, with dimensions of 50mm x 50mm x 25.5mm and a mass of 200g. The RW25 is designed to operate in temperatures from -20 °C to +50 °C and can withstand non-operational temperatures from -40 °C to +65 °C. It has a design lifetime of 2 years in low Earth orbit, with a potential for 5 years, subject to life testing. The design offers flexibility for changes in angular momentum and torque without radical redesigns, though mass and power may be affected.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.