[AR] Re: supersonic retro (was Re: Re: Falcon 9 flight today)
- From: Aplin Alexander T <ATAPLIN@xxxxxxxxxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Thu, 3 Oct 2013 10:01:50 +0100
Classification: Unclassified
>I meant that JPL was worried about that for Mars landers. And it may
>not be "we know it will be a problem." It may be more like "We can't
>prove it won't be a problem."<
Indeed, that was my point. A nice paper summarising the knowledge gap and
approaches to filling it:
<http://www.ssdl.gatech.edu/papers/conferencePapers/AIAA-2010-5046.pdf>
It includes suborbital rocket tests and balloon-launched test as possible
solutions.
These slides suggest 60km (~180kft) so maybe a bit sporty for an amateur rocket:
<https://solarsystem.nasa.gov/docs/02_Supersonic%20Retropropulsion%20Technology%20Development%20in%20NASA's%20Entry,%20Descent,%20and%20Landing%20Project_K.%20Edquist1.pdf>
This paper has more detail on potential use of Terrier variants (at 40-50 km
altitude):
<http://www.planetaryprobe.org/sessionfiles/session4/papers/post_srp_ft_concepts-paper.pdf>
More relevant stuff here:
<http://www.google.co.uk/search?hl=en-GB&source=hp&q=supersonic+retropropulsion>
Alex Aplin
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