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Path: utzoo!watmath!clyde!cbosgd!ihnp4!poseidon!brent
From: brent@poseidon.UUCP (Brent P. Callaghan)
Newsgroups: net.columbia
Subject: Re: orbiter ascent attitude
Message-ID: <1400@poseidon.UUCP>
Date: Mon, 10-Feb-86 14:58:00 EST
Article-I.D.: poseidon.1400
Posted: Mon Feb 10 14:58:00 1986
Date-Received: Wed, 12-Feb-86 05:58:38 EST
References: <999@burl.UUCP> <6357@utzoo.UUCP> <510@iham1.UUCP>
Organization: AT&T Information Systems, Lincroft NJ
Lines: 24

>In article <6357@utzoo.UUCP>, henry@utzoo.UUCP (Henry Spencer) writes:
>> > Can anyone explain why during assent the orbiter flies upside-down?
>> 
>> As I understand it, it's simply so that the tank and SRB's don't block
>> line-of-sight for radio communications between the orbiter and the ground.
>> -- 
>> 				Henry Spencer @ U of Toronto Zoology
>> 				{allegra,ihnp4,linus,decvax}!utzoo!henry
>
>But, why the role?  Why doesn't it just fly straight onto its back?
>-- 

The roll is initiated once the tower is clear to put the
launch vehicle on the correct azimuth for the desired orbital plane.

It is much easier to do it this way than to have some kind of
turntable launch pad.

-- 
				
Made in New Zealand -->		Brent Callaghan
				AT&T Information Systems, Lincroft, NJ
				{ihnp4|mtuxo|pegasus}!poseidon!brent
				(201) 576-3475