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NASA robotic explorer runs into trouble after launch

http://www.usatoday.com/story/tech/2013/09/07/nasa-robotic-explorer-moon-va/2779137/

by gvb • 13 years ago

23 4 13 years ago

US

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4

pohl• 13 years ago

It always seems to be the reaction wheels. Are they inherently difficult to get right?

dwc• 13 years ago

Yes and no. They're usually quite good, but they wear out. Reaction wheels are in continuous use and must remain precise enough to negate spin within some very tight tolerances. With limited fuel and the inherent work and risk in doing a burn to cancel spin, reaction wheels are usually spun very fast before they burn off the spin and let the wheels slow back down.

ANH• 13 years ago

The issues have been resolved, according to the NASA Ames Center Director: https://twitter.com/worden/status/376345117205876737

brownbat• 13 years ago

More details: http://science.time.com/2013/09/07/nasa-launches-robotic-exp...

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