MSL Video |
MSL Video |
Jun 5 2006, 08:54 PM
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#1
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Member Group: Members Posts: 321 Joined: 6-April 06 From: Cape Canaveral Member No.: 734 |
Saw the MSL video, which was similar to the MER video. It was awesome. Will try to get a copy
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May 30 2007, 03:20 PM
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#2
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Member Group: Members Posts: 129 Joined: 25-March 05 Member No.: 218 |
The whole suspend and release process really scares me. I remember a probable cause for the Mars Polar Lander's failure was when the landing gear extended the "bump" that created may have been interpreted as touchdown, so the engines cut off while still at altitude. I can see a similar tug or bump possibly happening to MSL while in suspended state (from air turbulence, swinging, or reaching the bottom of the cable reel-out.)
I don't know why the "skycrane" (in basically its same configuration), couldn't just have landing leg extensions (straddling MSL) and actually land (eliminating the MSL hanging in air). Once landed, MSL could just be similarly reeled down a few inches to the surface, cut loose, and then drive away. That way, they still have their immediately rovable rover, without the dangerous in-air suspension. |
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May 31 2007, 12:00 AM
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#3
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Member Group: Members Posts: 321 Joined: 6-April 06 From: Cape Canaveral Member No.: 734 |
I don't know why the "skycrane" (in basically its same configuration), couldn't just have landing leg extensions (straddling MSL) and actually land (eliminating the MSL hanging in air). Once landed, MSL could just be similarly reeled down a few inches to the surface, cut loose, and then drive away. That way, they still have their immediately rovable rover, without the dangerous in-air suspension. The "legs" would have to have a shock absorbsion system and able to handle uneven terrain. Also, they would have to be folded and then deployed adding more failure modes. Basically, the descent stage is landing a few meters above the surface. It is doing exactly like you said "Once landed, MSL could just be ....reeled down a few inches to the surface, cut loose, and then drive away" That's what it is doing, just without a gap between landing and lowering |
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