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
Post
#31
|
||
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: 4626 The landing itself should occur around November 11th. We'll keep you informed |
|
|
||
Oct 29 2014, 12:44 AM
Post
#32
|
|
Member Group: Members Posts: 241 Joined: 22-August 05 From: Stockholm Sweden Member No.: 468 |
|
|
|
Oct 29 2014, 10:31 AM
Post
#33
|
||
Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
I made a slopemap of site J using my terrain-model. (I'm assuming that the center of rotation is the gravityvector for the surface) Cyan=good Red=bad Thanks a lot Mattias for this very, very good work of yours ! If fact, we are not on Mars and there is not such a big number of 'bad' slopes, because in such a low-gravity object, we may 'land' in an hi-degree slope and stay there without sliding 'downwards', because we will screw into it. On the other hand, and because of such an eventuality, there is a strong possibility that the CIVA panorama looks very, very tilted with little horizon to be seen. Anyway, the horizon is so close that most of the interest of the CIVA images is in the looking 'downwards' to see tiny ground features around the lander that may sublimate/evaporate/move as we are closing to the Sun... |
|
|
||
Oct 29 2014, 12:29 PM
Post
#34
|
|
Member Group: Members Posts: 241 Joined: 22-August 05 From: Stockholm Sweden Member No.: 468 |
Thanks a lot Mattias for this very, very good work of yours ! If fact, we are not on Mars and there is not such a big number of 'bad' slopes, because in such a low-gravity object, we may 'land' in an hi-degree slope and stay there without sliding 'downwards', because we will screw into it. On the other hand, and because of such an eventuality, there is a strong possibility that the CIVA panorama looks very, very tilted with little horizon to be seen. Anyway, the horizon is so close that most of the interest of the CIVA images is in the looking 'downwards' to see tiny ground features around the lander that may sublimate/evaporate/move as we are closing to the Sun... Happy to be of service! I'm more worried about the rough boulder fields. I think those are more troublesome than just a slope. But it is hard for me to really say much about. I would like the 10Km OSIRIS look of the area. I made my roughness map to get a feel for the different areas. Thankfully there is a lot of blue there. (and landing in a red area could with some luck work just as well) |
|
|
Oct 29 2014, 01:04 PM
Post
#35
|
|
Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
Happy to be of service! I'm more worried about the rough boulder fields. Absolutely agree with you Mattias. The big boulders are of a real concern, because : - they may made the lander touch them and flip over upon arrival ; - the lander may not be able to screw into them ; - the lander body may land on the very top of a boulder (big or small) and its landing mechanism may not be able to fold down enough on its sides to get a grip on it and/or the soil... It's really going to be a tough landing anyway ! |
|
|
Lo-Fi Version | Time is now: 27th September 2024 - 08:55 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |