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From: polish@garfield.columbia.edu (Nathaniel Polish)
Newsgroups: net.columbia
Subject: Re: Challenger SRBs
Message-ID: <1393@garfield.columbia.edu>
Date: Mon, 10-Feb-86 09:35:01 EST
Article-I.D.: garfield.1393
Posted: Mon Feb 10 09:35:01 1986
Date-Received: Wed, 12-Feb-86 20:51:43 EST
References: <4270@mhuxd.UUCP> <437@umich.UUCP> <11642@ucbvax.BERKELEY.EDU> <929@nmtvax.UUCP>
Reply-To: polish@garfield.UUCP (Nathaniel Polish)
Organization: Columbia University
Lines: 12

In fact, the SRBs can gimble 8 degrees according to the 1981 NASA News 
Reference on the Shuttle.  There are also gyros in each of the SRBs; however,
the data from them are sent to the orbiter which merges the info.  
As discussed before the commands to gimble the SRBs come from the orbiter
and no provision is discussed for the SRBs to guide themselves after
separation.

There seems to be confusion in the press about the range safty systems.  
According to the 1981 stuff the RSS has a linear charge down the cable
tube which runs the length of the SRB.  The press suggests that the nose
is popped.  This had been discussed years ago but I  thought abandoned 
in favor of the system just described.  Does anyone know FOR SURE?