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NASA's Broken Planet-hunter Spacecraft Given Second Life
coondoggie writes "NASA today said it would fund the technology fixes required to make its inoperative Kepler space telescope active again and able to hunt for new planets and galaxies. Kepler, you may recall, was rendered inoperable after the second of four gyroscope-like reaction wheels, which are used to precisely point the spacecraft for extended periods of time, failed last year, ending data collection for the original mission. The spacecraft required three working wheels to maintain the precision pointing necessary to detect the signal of small Earth-sized exoplanets."
did it at least complete its five year mission to explore strange new worlds?
From Wikipedia (http://en.wikipedia.org/wiki/UTC_Aerospace_Systems): "Ithaco became notable for having manufactured the reaction wheels of the Kepler spacecraft, the Hayabusa spacecraft, the Mesosphere Energetics and Dynamics (TIMED) satellite and the Dawn spacecraft, which developed problems or even failed" May its name live in infamy. http://science.slashdot.org/st...
Is this: "crappy company delivers badly on contracts" or "company specializes in class of components that have a relatively high failure rate"?
This looks pretty bad for Ithaco: http://www.nature.com/news/the...: "ball bearings, which had already shown signs of pitting" BEFORE THE LAUNCH!!!!
Is this: "crappy company delivers badly on contracts" or "company specializes in class of components that have a relatively high failure rate"?
While RWs are way more complex than you would probably guess and have a history of failures across the industry, I still think in this case it is the former rather than the latter. After it started looking looking like there were systemic problems with Ithaco wheels, we developed our own wheels in-house. They haven't been perfect but there have been no mission ending problems with ours (so far; knocking on wood etc), unlike the Ithaco wheels.
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It's great for NASA that Kepler will continue operating in the ecliptic plane, where the newly discovered exoplanets might also see the Earth transit the Sun!
The bad news behind the headline is that Kepler's second life will be "community driven", which is a polite way of saying there is essentially no funding for science, just operations. The Senior Review Panel report (pdf) notes:
"The operation of the nation's space borne observatories is so severely impacted by the current funding climate in Washington that ... American pre-eminence in the study of the Universe from space is threatened to the point of irreparable damage if additional funds cannot be found to fill the projected funding gaps."
The response from NASA (pdf) acknowledges:
"The Kepler mission extension is approved for FY 2015-FY 2016 for K2 operations at a 10-percent reduction from the requested level; the full request cannot be accommodated within the constrained budget conditions."
If you love what Kepler has done, you can help support some of the scientists behind the discoveries through their Non-profit Adopt a Star program.
Weight.
NASA approves the testing methods of its contracts.
I am sure they do. But the question to ask is:
How often do they disapprove the testing methods of their contractors?
They don't just accept parts blindly.
I'm sure that the pressure to go forward without delays and extra costs is non-existent too.
it's not in high earth orbit either, or any other kind of Earth orbit. it is orbiting the Sun in an Earth-trailing orbit. That's REALLY a whole 'nother kettle of fish for sending any kind of repair mission.