Wheel qualification
The Comat RW40 reaction wheel is now ready for 8 years of operation in space
After an intensive sequence of analysis and tests, the Comat reaction wheel (RW40) is now qualified for all nanosatellites having an orbital life of 8 years (or less). This is a major step for Comat, who has already delivered the first 15 RW40 to an export customer.
The qualification test sequence included sine and random vibrations (15 g rms), shocks, EMC, thermal vacuum cycles, and an equivalent of 8 years’ life tests (including 100,000 zero-crossings) in worst temperature environment.
The first 15 RW40 have also been characterized in micro-vibrations and have demonstrated a very low level, with an excellent stability from model to model. On top of that, Comat can propose an external damper for very accurate earth observation satellites.
All the EEE parts which populated the unique PCB are rad-hard tolerant and can be procured following a lot approach with a preference for automotive components. The PCB has an IPC Class-3 quality level.
The Comat RW40 wheel is now the unique nanosat reaction wheel qualified for 8 years of operation in space, allowing a very safe mission for all potential satellite primes.
By the end of 2021, the RW60 will achieve the same level of qualification, and in 2023, so will the RW80.