ExoMars - Schiaparelli landing |
ExoMars - Schiaparelli landing |
Aug 12 2016, 07:07 PM
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Solar System Cartographer Group: Members Posts: 10190 Joined: 5-April 05 From: Canada Member No.: 227 |
Starting a new topic here - hopefully that's OK! Clearly there will be a lot of action around this in the next weeks and months with descent images and HiRISE views of the hardware.
I thought I had posted this map earlier but apparently not. This shows the various landing ellipses in this area. The original plan was for an ellipse oriented NW-SE, but it changed with the different launch date and is now nearly E-W. Note that the ellipse shown in the recent ESA release is the envelope of all ellipses over a given launch period, but the actual landing ellipse for the given launch date is smaller. Opportunity's final landing ellipse is shown for comparison. http://exploration.esa.int/mars/57445-exom...6-landing-site/ http://exploration.esa.int/mars/57446-exom...6-landing-site/ 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 PD: 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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Oct 20 2016, 09:44 AM
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#2
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Member Group: Members Posts: 362 Joined: 12-June 05 From: Kiama, Australia Member No.: 409 |
"Schiaparelli Mars probe's parachute 'jettisoned too early'"
QUOTE Europe's Schiaparelli lander did not behave as expected as it headed down to the surface of Mars on Wednesday. QUOTE But it is at the end of this parachute phase that the data indicates unusual behaviour. Not only is the chute jettisoned earlier than called for in the predicted timeline, but the retrorockets that were due to switch on immediately afterwards, fire for just three or four seconds. They were expected to fire for a good 30 seconds. In the downlinked telemetry, Schiaparelli is seen to continue transmitting a radio signal for 19 seconds after the apparent thruster shutoff. http://www.bbc.com/news/science-environment-37715202 |
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Oct 20 2016, 10:01 AM
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#3
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Senior Member Group: Members Posts: 2922 Joined: 14-February 06 From: Very close to the Pyrénées Mountains (France) Member No.: 682 |
"Schiaparelli Mars probe's parachute 'jettisoned too early'" http://www.bbc.com/news/science-environment-37715202 Sorry to tell that I never heard such assesments during the conference. -------------------- |
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Oct 20 2016, 11:19 AM
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#4
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Junior Member Group: Members Posts: 30 Joined: 22-July 11 Member No.: 6080 |
Sorry to tell that I never heard such assesments during the conference. Not quite in so many words, however that is what they were indicating. https://twitter.com/BBCAmos/status/789025342283456513 QUOTE The telemetry says the retro-rockets did fire. This event lasts three or four seconds. #ExoMars https://twitter.com/BBCAmos/status/789025867712307200 QUOTE ....communication with Schiaparelli is maintained for 19 seconds after the rockets are seen to shut off. Is the probe in freefall? #ExoMars https://twitter.com/BBCAmos/status/789025046727684100 QUOTE The communication from Schiaparelli ends 50 seconds earlier than expected. #ExoMars In the timeline parachute jettison/thruster firing should have occured just 30s before landing. http://exploration.esa.int/mars/57464-exom...scent-sequence/ |
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