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Article #6494

Re: Terminal Velocity of DCX? (was Re: Shuttle ...)

#6494
From: Brian Stuart Thorn
Date: Mon, 21 Dec 1992 02:31
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>In article <7gm27s@rpi.edu> strider@clotho.acm.rpi.edu (Greg Moore) writes:
>>
>>       Given a figure of $500 Million a flight, useful work can be:
>>10 hours/day * 6 astronauts * 5 days = 300 hours.  Divide this into the
>>above number nd you get $1.6 Million.  If this is a EDO flight of 10
>>days, your on-orbit costs drop in half.  So, I'd assume that
>>
>
>
>I think your number is a tad optimistic.  I think the shuttle suits
>are only good for 4-5 Hours, before a recharge is done.
>Also While you have a crew of 7,  at least two would stay in board.
>The pilot and the Arm operator (He may need an assistant).
>Henry is the roving expert on this.  so I get.
>(oops,  also i guy stays suited up in the airlock  as an emergency helper.
>8 hours/day (2 suit sorties) * 4 astronauts * 5 days = 152 hrs.
>Less if you need another guy on the flight or middeck.
>so i ball park it in at 3.5 million/hour.  not counting additional
>depreciation on the suits.
>
>I would imagine the CIS is still making a killing at 5 million/hour.
>

  Nope, not overly optimistic. Several Space Shuttle astronauts have
  spent seven hours or more in the EVA suits without recharge. Most
  recently this was done on the STS-49 mission, during which three
  crewmen spent over eight hours in their suits before recharge.
  I think six hours is considered a baseline EVA, though.
  
  -Brian
  
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Message-ID: <72105@cup.portal.com>
Path: arc1-ca.pugleaf.net!sparky!uunet!portal!cup.portal.com!BrianT
References: <1992Dec16.163114.4715@iti.org> <BzD2K2.A24@zoo.toronto.edu> <7gm27s@rpi.edu> <1gvkjlINN7c@mirror.digex.com>

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Path: arc1-ca.pugleaf.net!sparky!uunet!portal!cup.portal.com!BrianT
From: BrianT@cup.portal.com (Brian Stuart Thorn)
Newsgroups: sci.space
Subject: Re: Terminal Velocity of DCX? (was Re: Shuttle ...)
Message-ID: <72105@cup.portal.com>
Date: Sun, 20 Dec 92 18:31:29 PST
Organization: The Portal System (TM)
References: <1992Dec16.163114.4715@iti.org> <BzD2K2.A24@zoo.toronto.edu>
  <7gm27s@rpi.edu> <1gvkjlINN7c@mirror.digex.com>
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