Hayabusa - The Return To Earth, The voyage home |
Hayabusa - The Return To Earth, The voyage home |
Nov 28 2005, 03:08 PM
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Member Group: Members Posts: 510 Joined: 17-March 05 From: Southeast Michigan Member No.: 209 |
...starting a new thread for Hayabusa's sampling feedback and the return voyage.
After its nail-biting success in November, will there be enough fuel for the Falcon to make it home? -------------------- --O'Dave
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Dec 9 2005, 05:17 PM
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#2
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Senior Member Group: Members Posts: 1636 Joined: 9-May 05 From: Lima, Peru Member No.: 385 |
Hope that Hayabusa has a match fire on their side for just in the case that the ion engine won't also be able to be ignited....
I am pessimist of a good trail of "mishapes". Rodolfo |
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Dec 9 2005, 07:11 PM
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#3
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Member Group: Members Posts: 624 Joined: 10-August 05 Member No.: 460 |
Since the xenon was not intended to be used as an attitude control gas, Are they using a venting valve to adjust the spin and attitude, or can they run zenon into the attitude control system?
In either case, the calculations are quite complex: They would have to maintain a slow rotation rate, and vent the gas at just the precise moment for the right percentage of the roll to adjust the tilt. It would take a very careful trial-and-error assessments to do this (the ultimate $170million dollar video game...and a lot of Lipovan |
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Dec 12 2005, 08:03 PM
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#4
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
FATE OF JAPAN'S TROUBLED ASTEROID PROBE UNCERTAIN
------------------------------------------------- Japanese officials are struggling to fix a horde of problems plaguing the Hayabusa space mission in time to begin its journey back to Earth with or without a package of specimens that were supposed to have been collected from the surface of asteroid Itokawa late last month. http://spaceflightnow.com/news/n0512/11hayabusa/ -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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