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Article #8170Re: Unmanned w/old SRBs (was Re: space news from July 11 AW&ST)
From: Henry Spencer
Date: Tue, 13 Sep 1988 16:43
Date: Tue, 13 Sep 1988 16:43
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In article <6377@dasys1.UUCP> tneff@dasys1.UUCP (Tom Neff) writes: >You are proposing a dichotomy: go back to the old pre-1986 practices or >shut everything down immediately. I am saying there is a middle ground: >proceed, but more conservatively... This is in fact what I am suggesting, too. We do not need to go back to 1986 to use the old SRBs; we now know much more about what makes them fail. With a few precautions like restraining bands on the joints, lower leak-test pressures, and a sharp eye on joint temperatures, those old SRBs are not a lot less safe than the new ones. Oh, there is a difference, but given the oxidizer shortage, one has to balance the risks against the utility of being able to fly more missions. That's what I was getting at: given that any shuttle flying involves risks, it is irrational to reject ideas like this without careful consideration of the tradeoffs. Saying "we must reduce risks as much as possible" is silly; we can reduce risks to zero by not flying at all. Tradeoffs are inevitable if we want to get things done. -- NASA is into artificial | Henry Spencer at U of Toronto Zoology stupidity. - Jerry Pournelle | uunet!attcan!utzoo!henry henry@zoo.toronto.edu
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Newsgroups: sci.space,sci.space.shuttle Path: arc1-ca.pugleaf.net!utzoo!henry From: henry@utzoo.uucp (Henry Spencer) Subject: Re: Unmanned w/old SRBs (was Re: space news from July 11 AW&ST) Message-ID: <1988Sep13.164340.1289@utzoo.uucp> Organization: U of Toronto Zoology References: <1988Aug16.040406.5434@utzoo.uucp> <6137@dasys1.UUCP> <1988Aug29.172104.10823@utzoo.uucp> <6185@dasys1.UUCP> <1988Sep7.212736.6080@utzoo.uucp> <6377@dasys1.UUCP> Date: Tue, 13 Sep 88 16:43:40 GMT