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From: jfw@ksr.com (John F. Woods)
Newsgroups: sci.space.shuttle
Subject: Re: Role of Shuttle during Launch
Message-ID: <3546@ksr.com>
Date: 14 May 91 21:21:50 GMT
References: <91134.134830TNEDDERH@ESOC.BITNET>
Sender: news@ksr.com
Lines: 9

TNEDDERH@ESOC.BITNET (Thorsten Nedderhut) writes:
>Hi there,
>when I watched the Shuttle launches from KSC at TV, I often recognized this
>role motion during the first 20 seconds. I do not remember if this occurs
>always. Has it something to do with ?yaw-wheel-steering-mode?, is it just
>a function test of the bird or is it used to adjust the plane?

It always occurs, it is to adjust the plane.  The amount of roll varies
according to what orbit the Shuttle is headed for.