Article View: sci.space.shuttle
Article #922Re: How do they get it pointing up?
From: Mike Peltier
Date: Tue, 05 Dec 1989 01:29
Date: Tue, 05 Dec 1989 01:29
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In article <117.UUL1.3#5131@mvac23.UUCP> mvac23!thomas@udel.edu writes: > >I assume that one of the reasons that shuttle's engines start before the >solid boosters is to help counteract the tendency of the whole thing to >fall on the orbiter's back? > Wrong-o. Give these engineers some credit, willya? I'm going to be one of them in a few years... The reason the SME's are lit first is simply that you can turn them off, while the SRBs are considerably more difficult to snuff. Recall that launch a couple of years back where the SMEs fired for about a second and a half and then shut down? If that had happened after the SRBs were lit, there would have been considerably more problems to deal with. -- - - - - - - - - - Michael V. Peltier | Computer Aided Engineering Network 1420 King George Blvd. | University of Michigan, Ann Arbor Ann Arbor, MI 48104-6924 | stealth@caen.engin.umich.edu
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!shadooby!netnews.engin.umich.edu!caen.engin.umich.edu!stealthReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!shadooby!netnews.engin.umich.edu!caen.engin.umich.edu!stealth From: stealth@caen.engin.umich.edu (Mike Peltier) Newsgroups: sci.space.shuttle Subject: Re: How do they get it pointing up? Message-ID: <473bfa27.b617@bear.engin.umich.edu> Date: 5 Dec 89 01:29:00 GMT References: <1989Nov23.165606.27671@utzoo.uucp> <117.UUL1.3#5131@mvac23.UUCP> Reply-To: stealth@caen.engin.umich.edu (Mike Peltier) Organization: University of Michigan Engineering: Ann Arbor, Michigan Lines: 20