Article View: sci.space.shuttle
Article #981Re: SRBs
From: Robert McGwier
Date: Wed, 10 Jan 1990 19:16
Date: Wed, 10 Jan 1990 19:16
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From article <1990Jan10.142852.23804@phri.nyu.edu>, by roy@phri.nyu.edu (Roy Smith):
> launch, I noticed that the SRBs were still burning when they separated, and
> them). To me, this means they waste some significant fraction of the SRB
At the end of burn the thrust decreases rapidly. When the acceleration
provided by this decreasing thrust falls BELOW that which would be
achieved by dropping them, they are let go. (Remember F=MA?). The
mass in F=MA falls further than F when they are dropped at the instant
chosen so that A actually gets bigger.
Bob
--
____________________________________________________________________________
My opinions are my own no matter | Robert W. McGwier, N4HY
who I work for! ;-) | CCR, AMSAT, etc.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!uwm.edu!rutgers!njin!princeton!idacrd!mac From: mac@idacrd.UUCP (Robert McGwier) Newsgroups: sci.space.shuttle Subject: Re: SRBs Message-ID: <556@idacrd.UUCP> Date: 10 Jan 90 19:16:28 GMT References: <1990Jan10.142852.23804@phri.nyu.edu> Organization: idacrd, princeton, nj Lines: 18