ExoMars - Schiaparelli landing |
ExoMars - Schiaparelli landing |
Oct 14 2016, 07:09 AM
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#16
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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 |
With Oppy being so close, was there any consideration on having it listen to Schiapparelli on UHF during the EDL? Listening to Schiapparelli? On what Chanel ? -------------------- |
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Oct 14 2016, 07:19 AM
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#17
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Senior Member Group: Members Posts: 2173 Joined: 28-December 04 From: Florida, USA Member No.: 132 |
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Oct 14 2016, 07:35 AM
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#18
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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 |
Oh yes, sorry about that.
If I remembrer correctely, so far, the landers have all overshot the center of the elipse? Is that correct? I guess we still have a chance to get pictures of Oppy's landing hardware... -------------------- |
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Oct 14 2016, 09:13 AM
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#19
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Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
Listening to Schiapparelli? On what Chanel ? Yeah, that could be a problem. I'm pretty sure lander to lander communications were not on top of their minds when these things were designed. Also the radiation cone from the UHF antenna would be pointing in wrong direction, but proximity should definitely help with that. -------------------- Antti Kuosmanen
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Oct 14 2016, 09:26 AM
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#20
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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 |
This was just for Schiaparelli = Channels, oh well...
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Oct 14 2016, 07:01 PM
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#21
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Junior Member Group: Members Posts: 78 Joined: 20-September 14 Member No.: 7261 |
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Oct 16 2016, 05:35 PM
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#22
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Senior Member Group: Members Posts: 2106 Joined: 13-February 10 From: Ontario Member No.: 5221 |
Schiaparelli seperation confirmed!
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Oct 16 2016, 07:50 PM
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#23
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Member Group: Members Posts: 968 Joined: 15-June 09 From: Lisbon, Portugal Member No.: 4824 |
Here is a link to a page where live updates about ExoMars are being posted: http://m.esa.int/Our_Activities/Space_Scie...val_and_landing
Excerpt from the page above: QUOTE 16 October 18:43 CEST: Full telemetry link with ExoMars/TGO has been restored via ESA's 35m deep-space ground station at Malargüe, Argentina. 18:30 CEST: The Schiaparelli module was released from the Trace Gas Orbiter (TGO) at 14:42 GMT (16:42 CEST) as planned. Today, three days before gravity will ensure the arrival of ExoMars 2016 at Mars, the Schiaparelli Entry, Descent & landing demonstrator Module separated from the TGO orbiter and is now en route on a ballistic trajectory to reach the Red Planet, enter its atmosphere and land softly in an area close to the equator known as Meridiani Planum. However, TGO unexpectedly did not return telemetry (on-board status information), and sent only its carrier signal, indicating it is operational. The anomaly that prevents TGO's telemetry from being sent is under investigation, and is expected to be resolved within the next few hours. Fernando |
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Oct 16 2016, 09:08 PM
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#24
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Senior Member Group: Members Posts: 1452 Joined: 26-July 08 Member No.: 4270 |
ESA's official twitter confirms TGO is now returning telemetry.
-------------------- -- Hungry4info (Sirius_Alpha)
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Oct 17 2016, 11:59 PM
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#25
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Member Group: Members Posts: 968 Joined: 15-June 09 From: Lisbon, Portugal Member No.: 4824 |
A few ESA links about Schiaparelli's EDL:
Schiaparelli's descent trajectory Schiaparelli's descento to Mars in real time (the whole 5m 52s of the descent) ExoMars: From separation to landing Fernando |
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Oct 19 2016, 03:20 PM
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#26
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Member Group: Members Posts: 968 Joined: 15-June 09 From: Lisbon, Portugal Member No.: 4824 |
ExoMars TGO burning proceding ok, "with slight overperformnace" (Flight Operations Director)
Schiaparelli: at 15:19 UTC it is known it was awake and executing the pre-programmed sequence. Furher information expected within the hour Fernando |
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Oct 19 2016, 03:25 PM
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#27
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Member Group: Members Posts: 282 Joined: 18-June 04 Member No.: 84 |
Following Tweets from ESA, it seems they were able to follow much of the EDL up until the final moments, at which point did the signal disappear? - at the point of landing??
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Oct 19 2016, 03:28 PM
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#28
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Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
No exact timing mentioned but the Puna radiotelescope seeing the UHF signal lost it at some point when Schiaparelli would have been in powered flight or at landing.
-------------------- Antti Kuosmanen
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Oct 19 2016, 03:49 PM
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#29
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Member Group: Members Posts: 282 Joined: 18-June 04 Member No.: 84 |
Mars Express transmitting EDL data now.
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Oct 19 2016, 04:06 PM
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#30
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Member Group: Members Posts: 122 Joined: 19-June 07 Member No.: 2455 |
I have a question about this lander mission for the experts. I was surprised to hear the lander has no solar panels, will operate briefly until batteries run out, and has no surface cameras at all, that this mission was primarily just to practice landing techniques in preparation for a future rover mission. It sure seems that these techniques have been fully developed by the US and we are having stunning successes at landing in difficult conditions and I would assume that there would be no reservations at all about sharing the technology with ESA. While I understand that ESA wants to show they can do it on their own, the costs to send a lander are astronomical and not reinventing the wheel seems to be a very logical step. Why is ESA not piggybacking off our experience more? Was this simply a situation where they had such limited payload weights available and this was some last minute addition to the ExoMars mission or did they truly need this step? I just can't fathom going to all that trouble to set something down like this and not include solar panels and a camera.
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