Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 exptools 1/6/84; site ihlts.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!ihnp4!ihlts!rjnoe 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