home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!menudo.uh.edu!judy.uh.edu!st17a
- From: wingo%cspara.decnet@Fedex.Msfc.Nasa.Gov
- Newsgroups: sci.space
- Subject: Re: Sabatier Reactors.
- Date: 24 Jan 1993 20:50 CST
- Organization: University of Houston
- Lines: 97
- Sender: st17a@judy.uh.edu (University Space Society)
- Distribution: world
- Message-ID: <24JAN199320503892@judy.uh.edu>
- References: <1jutp0INNacf@digex.digex.com>
- NNTP-Posting-Host: judy.uh.edu
- News-Software: VAX/VMS VNEWS 1.41
-
- In article <1jutp0INNacf@digex.digex.com>, prb@access.digex.com (Pat) writes...
- >
- >
- >|From: redin@lysator.liu.se
- >
- >|-In sci.space you write:
- >|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.
- >|Methane more risky then hydrazine? but, but, but, oh well :-(
- >|I simply dont understand the US pork barrels. Couldent they have
- >|launched 4-5 miniature stations with single shuttle flights to test
- >|things out? The first 1-2 is junk and cannot be habitable and are
- >|scuttled after the shuttle flight, next 3-4 can be manned between
- >|two flights or more and number 5 - n can be bolted to a truss and
- >|you have your tested, safe freedom with bells and whistles that _work_.
- >|You will get at least as much pork and much more space station.
- >|Why in hell are they stuck inside CAD simulations and paperbins?
- >|Magnus Redin Lysator Academic Computer Society redin@lysator.liu.se
- >|Mail: Magnus redin, Rydsv{gen 240C26, 582 51 LINK|PING, SWEDEN
- >
-
- I wonder if people like this are just trying to provoke me? The last I heard
- was that SSF was going to use LOX/H2 thrusters for orbit maintainance.
- Am I wrong? If so, then they are MORE risky than hydrazine.
-
- Also for your information, NASA has been flying station precursors for
- over ten years now. They are called Spacelab. Also the new SpaceHab will
- be flying on STS-57 in April. These are dependent on Shuttle for
- utilities, but are doing the most important SSF precursor work, which is
- the experiments for microgravity. Also NASA has sponsored COMET, which will
- fly in March, which is a free flying microgravity laboratory with a return
- module for returning samples that have been through their process cycle.
-
-
- So NASA, who you think is stupid, IS doing what you are saying there, and
- for a lot more money than a full up program of throwing away hardware.
- All of the Spacelab and Spacehab experiments can be used again for very
- minimal costs, as well as the experiments returned from the COMET module.
-
- These experiments are all important as precursors to SSF because we can get
- all of the bugs out of the experiments and the experiment process before we
- fly them on SSF where they can be run in an effective manner, having all of t
- eh bugs worked out on less expensive platforms. See there NASA ain't half
- as dumb as the average poster to sci.space.
-
-
- >The problem is not that methane is risky. We have been using methane
- >industrially for 150 years. but that SSF management said, no-one has ever
- >space qualified a methane oxygen thruster so damn if we will.
- >Failure oriented management.
- >
- >and as for the other idea, i guess that's what skylab was. of course
- >now NASA is such an arthritic bureaucracy, i dont think they really want
- >to fly packages so much as study them. actually who needs to build
- >mini stations. for small items test them in the shuttle cargo bay,
- >for longer duration, test them on MIR.
- >
- >but that would be too easy, i guess.
- >
- >pat
-
- It is also easy to criticize before you find out the facts. I suggest that
- you might take the time to do a little research to find out exactly what is
- going on in NASA before you are so blith in your criticism.
-
- There are many problems at NASA, but there is also a lot of good things
- going on.
-
- Dennis, University of Alabama in Huntsville
-
- *
- *********
- *********
- *********
- * 0
- *
- *
- *
- *
- *
- *
- *
- *
- *
- *
- ***
- ***
-
- **************************************************************************
-
- Delta II/Small Expendable (Tether) Deployer System (SEDS) flight
- configuration during deployment, circa March 1993.
-
- **************************************************************************
-
-