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From: osmigo@ut-ngp.UUCP (Ron Morgan)
Newsgroups: sci.space.shuttle
Subject: Re: Throttling the Challenger
Message-ID: <6563@ut-ngp.UUCP>
Date: Sun, 18-Oct-87 14:15:32 EDT
Article-I.D.: ut-ngp.6563
Posted: Sun Oct 18 14:15:32 1987
Date-Received: Mon, 19-Oct-87 00:19:18 EDT
References: <340@ablnc.ATT.COM> <3143@ames.arpa>
Reply-To: osmigo@ngp.UUCP (Ron Morgan)
Organization: Speech Communication UT Austin
Lines: 21
Keywords: Challenger Throttle

[105% throttle settings]

I'm not a Space Cadet, but a few questions keep throbbing:

1.  Is it *necessary* to launch at 105% power? If not, it seems that such
	settings create an unnecessary risk, sort of like routinely accelera-
	ting your car with the pedal on the floor. On the other hand, if it
	IS necessary, that suggests that the launch device was deliberately 
	"underdesigned." What's the story here?

2.  How closely related is rate of burn-through (assuming it occurs, which it
	did) to power level? If power levels had been set within the limits
	*intended by the design* would it still have burnt through, perhaps
	later in the launch path?

(R)eply at your own risk...

-- 
Ron Morgan                      ARPA: osmigo%ngp@sally.utexas.edu
University of Texas at Austin   UUCP: {ihnp4,seismo,allegra,sally}!ngp!osmigo
Dept. of Speech Communication       osmigo@ngp.UUCP