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Article #6494Re: Terminal Velocity of DCX? (was Re: Shuttle ...)
From: Brian Stuart Thorn
Date: Mon, 21 Dec 1992 02:31
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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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> Lines: 31