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Why So Many Spacecraft Reaction Wheels Failed

submitted by Aard Vark

(oritteropo)
5 years 7 months 4 weeks ago

YouTube description:

In the last 20 years it's been surprisingly common for space probes to end missions early because reaction wheels have failed, moreover there's been a large number of failures associated with a specific supplier - Ithaco. A NASA spin off which developed low cost reaction wheel systems that helped bring the cost down for many space missions.
A new study offers some clues as to what might have been going on and why solar weather might be able to damage mechanical systems.
http://esmats.eu/esmatspapers/pastpapers/pdfs/2017/bialke.pdf