Mars Sample Return |
Mars Sample Return |
Apr 7 2006, 07:32 AM
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#501
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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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Mar 31 2024, 03:45 PM
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#502
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Junior Member Group: Members Posts: 99 Joined: 17-September 07 Member No.: 3901 |
There are a lot of details about the MAV design as of 2022...larger design with more mass margin...sounding-rocket-based flight test on slide 15. That March 2022 IEEE Aerocon presentation was previously seen in Post #424 (the "Presentation" link in the post text, not the link in the quote from 2021). Slide 15 says that Stage 2 of the MAV would be tested at a high altitude over Earth, "to replicate Martian surface environments." But Stage 2 needs to function at high altitude over Mars, without Mars surface atmospheric density. Also in Post #424, the full paper corresponding to the 2022 presentation says it would be desirable to flight test the whole MAV.Re "a lot of details," should we worry that 3D CAD has made it too easy for design concepts to look like finished engineering? Agree that larger and more mass margin could be helpful, but how big can the Mars lander be, to deliver the MAV? |
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Mar 31 2024, 07:10 PM
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#503
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Senior Member Group: Members Posts: 2542 Joined: 13-September 05 Member No.: 497 |
That March 2022 IEEE Aerocon presentation was previously seen in Post #424 (the "Presentation" link in the post text, not the link in the quote from 2021). Slide 15 says that Stage 2 of the MAV would be tested at a high altitude over Earth, "to replicate Martian surface environments." But Stage 2 needs to function at high altitude over Mars... Sorry, the link I found was a PDF and the original link was a PPT so I missed that it was already discussed. There also seems to be some confusion on the NTRS web site, as I often can't find MAV work with a search on NTRS, only via other search engines. You'd think there would be more recent papers by now, but I haven't found them. Maybe I'm just not using NTRS correctly. Slide 15 is confusing IMHO by showing the whole vehicle "Notional Qualification Test Article" and then showing what seems to be just the interstage and Stage 2 in the lower right, but it's hard to say for sure. Since the avionics and RCS are in the interstage, perhaps they are using the sounding rocket's upper stage as a mass surrogate for the test. I'd like to believe that Marshall has a justification for proposing this. Previous work has mentioned balloon tests but I'm not going to bother to track those down. It's unclear to me what the real cost drivers with MSR are, but I maintain that if it's the MAV, they are not yelling that from the rooftops that I can see. It's a bit sad to go through this very long thread and see my optimism wax and wane about whether MSR will ever happen, but I am definitely in a trough at the moment. All we can do is wait from the MIRT report. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Apr 1 2024, 05:59 AM
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#504
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Member Group: Members Posts: 255 Joined: 28-October 12 Member No.: 6732 |
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Lo-Fi Version | Time is now: 22nd September 2024 - 11:43 PM |
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