Article View: sci.space.shuttle
Article #3980Re: Throttling the Challenger
From: Kurt Allen
Date: Mon, 19 Oct 1987 14:14
Date: Mon, 19 Oct 1987 14:14
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In article <340@ablnc.ATT.COM> rcpilz@ablnc.ATT.COM (Robert C. Pilz) writes: > >I heard the commands to the >crew to be at 105% throttle. They acknowledged that. Then they >were told to go to 80% (or so). They acknowledged that. Then >they were told (very quickly) to go back to 105%. At this point, >the explosion happened. The space shuttle engines were originally rated for less power, but the max power rating was raised. I'm not sure if the increase in maximum power was an engineering modification, or if the original restrictions were relaxed, but the later flights of th shuttle typically used 100+ percent power. I believe the maximum was 109 % of the originally rated maximum power. Before the accident I had heard of plans to modify the engines to handle even greater thrust. So, to answer your question, the power up that occured was normal and scheduled. It was not an emergency action in reaction to the SRB burnthrough. -- Kurt W. Allen 3M Center ihnp4!mmm!allen
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!cmcl2!rutgers!umn-d-ub!umn-cs!mmm!allen From: allen@mmm.UUCP (Kurt Allen) Newsgroups: sci.space.shuttle Subject: Re: Throttling the Challenger Message-ID: <1473@mmm.UUCP> Date: Mon, 19-Oct-87 10:14:29 EDT Article-I.D.: mmm.1473 Posted: Mon Oct 19 10:14:29 1987 Date-Received: Wed, 21-Oct-87 00:14:04 EDT References: <340@ablnc.ATT.COM> Reply-To: allen@mmm.UUCP (Kurt Allen) Organization: Software & Electronics Resource Center/3M Lines: 22 Keywords: Challenger Throttle