Philae landing on the nucleus of Comet 67P C-G |
Philae landing on the nucleus of Comet 67P C-G |
Sep 23 2014, 12:16 PM
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#31
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
Now, it's time to open a new section devoted to the landing of the Philae lander itself on the nucleus of Comet 67P C-G. Also to answer better the earlier post, http://www.unmannedspaceflight.com/index.p...st&p=212943 and for your information, here is the quick summary (as a "pdf" file) of the events that are expected to occur during landing on the nucleus and after : it's the timeschedule on which we are working to set up our EPO event in Paris. Sequence_ATTERRISSAGE10_UMSF.pdf ( 263.81K ) Number of downloads: 4625 The landing itself should occur around November 11th. We'll keep you informed |
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Nov 1 2014, 09:59 PM
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#32
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Solar System Cartographer Group: Members Posts: 10229 Joined: 5-April 05 From: Canada Member No.: 227 |
How are the boulders supported? Is every last one of them sitting in only a few cm of dust over a firm substrate? Whatever the boulder story is, it will probably apply to Philae as well.
(EDIT - OK, I see others said this too.) Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PDF: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Nov 3 2014, 04:19 PM
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#33
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Senior Member Group: Members Posts: 4256 Joined: 17-January 05 Member No.: 152 |
How are the boulders supported? Is every last one of them sitting in only a few cm of dust over a firm substrate? Whatever the boulder story is, it will probably apply to Philae as well. The important question is: did the boulders roll very gently into place, or come down at high velocities? As Doug pointed out, the weights are very low due to the very low gravity. But Philae will touch down at 0.5-1 m/s, so a soft and deep enough surface wouldn't allow it to decelerate without getting burried, even if the surface could support the lander's weight if it were very gently set down. Still, they've planned for very soft surfaces - one description I read said even "one as soft as cigarette ash" (Science story). |
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Nov 4 2014, 02:47 PM
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#34
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Forum Contributor Group: Members Posts: 1374 Joined: 8-February 04 From: North East Florida, USA. Member No.: 11 |
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