Viking 4 - Mars Surface Sample Return

Graham1973

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Archibald

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How did I missed that thread back then ? A Viking-MSR !

EDIT: the links are dead (Frank Wolf and chinese spy porn, how we HATE you !)

@Graham1973 did you saved the papers back then ?
 

blackstar

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I did a quick search there under "Martin-Marietta Mars Sample Return" and came up with a few things, but it may not be what was linked earlier. If anybody finds them, please let us know.


Note that this is a lesson even for non-NTRS stuff. Links disappear. Post the file or the image if you can, because a link could disappear in days, weeks, years.
 

Archibald

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I've tracked down the "summary report" on the Internet archive. No luck for the other two !
According to graham posting on the link above,

It corresponds to the (dead link) in the first post. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19750006729_1975006729.pdf

Now attached to this post.
 

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Graham1973

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How did I missed that thread back then ? A Viking-MSR !

EDIT: the links are dead (Frank Wolf and chinese spy porn, how we HATE you !)

@Graham1973 did you saved the papers back then ?

I'll check the drive where I've backed up a lot of the stuff I've downloaded from the NTRS, will attach the files if I have them.
 

Archibald

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Many thanks.

In passing, could you please check if you have that other Viking document ?

"Viking Spacecraft for Lunar Exploration - Case 340," R. Kostoff, M. Liwshitz, S. Shapiro, W. Sill, and A. Sinclair, Bellcomm, Inc., 30 June 1970.

I swear it was on the NTRS back then 2009 - because I cut and pasted part of it in a WORD file. But can't find it anymore on my HD nor on the NTRS of course. ROGNTUDJU !!
 
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Graham1973

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Archibald

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NASAspaceflight has much larger attachement than this forum, I suggest you post it there (but it's your decision of course).
 

blackstar

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Just stumbled upon this in one of the documents. I'll have to read more about this. It's actually not a good way to do sample return because the return vehicle has to brake into Earth orbit and that requires a lot of delta-v and a lot of fuel. As engineers started to look at sample return in the late 1990s and then in the 2000s for a range of missions, they kept tossing away concepts until they eventually settled on having it just reenter and parachute to Earth, without even air catch (the reason being that they had to design the capsule to be intact if air catch failed, so air catch became redundant). MSRShuttle.png
 

Archibald

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The Shuttle had to be justified at any cost... this was an idiotic and very damaging policy, a lose-lose situation.
On the manned side it risked astronauts lives to launch satellites.
On the unmanned side it added a lot of constraints and thus cost in an already bleak era - the one between Voyager and Magellan.

The Shuttle made some sense as a space station crew and cargo taxi. Once the station was pushed from 1972 to 1984 ( to 1998 and 2010 in reality) the Shuttle new mission was just silly.
 

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