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From: rjnoe@ihlts.UUCP (Roger Noe)
Newsgroups: net.columbia
Subject: IUS fixed
Message-ID: <561@ihlts.UUCP>
Date: Tue, 18-Sep-84 13:30:50 EDT
Article-I.D.: ihlts.561
Posted: Tue Sep 18 13:30:50 1984
Date-Received: Tue, 25-Sep-84 03:20:31 EDT
Organization: AT&T Bell Labs, Naperville, IL
Lines: 10

Boeing Aerospace Co. announced that the Inertial Upper Stage design has
been fixed.  The IUS was used 17 months ago to deploy TDRS-A, the first
tracking and data relay satellite, into a geosynchronous orbit but there
was a failure in the IUS motor during its burn.  Small maneuvering motors
were employed to get TDRS-A into its intended orbit.  The Air Force will
use an IUS - the most powerful U.S. upper stage - in December to deploy an
undisclosed payload from the shuttle orbiter Challenger.  Another IUS will
be used next February to deploy TDRS-B.
--
Roger Noe			ihnp4!ihlts!rjnoe