rjnoe@ihlts.UUCP (Roger Noe) (09/18/84)
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