Mars Sample Return |
Mars Sample Return |
Apr 7 2006, 07:32 AM
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#1
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Member Group: Members Posts: 370 Joined: 12-September 05 From: France Member No.: 495 |
Next phase reached in definition of Mars Sample Return mission
http://www.esa.int/esaCP/SEMJAGNFGLE_index_0.html |
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Oct 17 2007, 12:16 AM
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#2
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Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
It seems that for sake of economy and simplicity a solid first stage would be ideal. However, I can't think of anything else but a liquid-fueled (hypogolic?) second stage to achieve orbit; it has to have a throttle & restart capability, esp. if the first stage under- or over-performs, and of course to circularize the orbit. Perhaps pressure-fed tanks controlled by valves alone would overcome the pump problem; pressurize the hell out them with Martian air before launch, then leave the feed pumps on the surface...
Not even touching the autonomous G&C requirements here. This will not be easy. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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