After u.g. major in math with lots of physics I'm trying to decide on masters/Ph.d in math or orbital mechanics. What are the opportunities in orbital mechanics and will they still be there in 5 or 6 years. Any advice is greatly appreciated. Reply via net or directly mjones@ccwf.cc.utexas.edu
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Date: 23 Jan 93 01:00:37 GMT
From: Pat <prb@access.digex.com>
Subject: Oxygen in Biosphere 2
Newsgroups: sci.space
A comment is made on the smell inside B2. I imagine actually that unless
SO2 is being produced, it doesn't matter. Human noses acclimate
very quickly. Farmers dont mind the pigs, People dont mind their
own Body odors. I once worked in a septic farm, you stop noticing.
The bigger question is air samples exported to outside testers?
taber, you would know.
pat
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Date: 22 Jan 1993 18:09:27 GMT
From: Pat <prb@access.digex.com>
Subject: Sabatier reactor? (was Re: Oxygen in Biosphere 2)
Newsgroups: sci.space
I think there are two sabatier main chains. they deal with CO2 processing.
CO2 + H (iron catalyst + Heat) --> CH4 + H2O
CO2 (IRON catalyst and heat) --> O2 and C.
Its a real old well understood prociess.
BTW
Freedom decided not to use methane thrusters. so instead they are
throwing out waste CO2 and importing hydrazine. failure oriented
management wins again. someone thought methane thrusters were
too risky.
pat
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Date: 22 Jan 1993 18:04:45 GMT
From: Pat <prb@access.digex.com>
Subject: Saving an overweight SSTO....
Newsgroups: sci.space
In article <19752@mindlink.bc.ca> Bruce_Dunn@mindlink.bc.ca (Bruce Dunn) writes:
>> Dani Eder writes:
> Interesting idea. Without a full orbital flight, the DC-1 will not
>be able to land at its launch site. Any idea on how far downrange the DC-1
>would land, and whether this could be accomplished within the width of the
>continental USA? If not, or a Florida launch is needed to get a 28.5 degree
>orbit, where in Africa would be a suitable landing site? A quick look at a
>globe suggests launching from Hawaii would require landing somewhere the the
>northern half of south America. Return to the launch site would presumably be
>by another suborbital hop, although this unfortunately means that two
>refueling and launch sites are needed and two DC-1 flights are needed to put
>1 payload into orbit.
>
How about this. ping pong around. HawaII to Ecuador. Ecuador to Spain.
Spain to Tanzania. Tanzania to India, India to Australia, Australia
to Hawaii.
You bounce around and just keep meeting cargos.
pat
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Date: Fri, 22 Jan 1993 15:44:34 GMT
From: shanleyl@ducvax.auburn.edu
Subject: Shuttle Smell After Sweat, Methane and ...
Newsgroups: sci.space
In article <1993Jan21.131803.1674@cs.rochester.edu>, dietz@cs.rochester.edu (Paul Dietz) writes:
> From: Carl Hage <hage@netcom.com>
>
>> .... Also, it would seem that odor might be a problem
>> in such a small enclosed space.
>
>
> I understand that they have a system where air is recirculated through
> a large mass of soil. This replicates one of the mechanisms of the
> natural biosphere for cleansing the atmosphere. Microorganisms are
> significant sinks for CO, H2, and numerous other trace gases. And,
> indeed, they claim that odors have not been a problem.
>
> I have read, however, that the Shuttle is pretty rank at the end of a
> flight. Is this true?
Yes. The astronauts say " you sweat for a week+ with 5 or 6 other guy (or gals)
and not be able to take a shower, and have your food never settled in your
stomach (ergo-always producing gas) and then tell me how you think it will
