Donnerstag, 12. Januar 2017 - 08:30 Uhr
Mission: ASC-1/American Satellite Company, AUSSAT-1/Australian Communications Satellite, SYNCOM IV-4Space Shuttle: DiscoveryLaunch Pad: 39A Launch Weight: 262,309 poundsLaunched: Aug. 27, 1985 at 6:58:01 a.m. EDTLanding Site: Edwards Air Force Base, Calif.Landing: Sept. 3, 1985 at 6:15:43 a.m. PDTLanding Weight: 196,674 poundsRunway: 23 Rollout Distance: 6,100 feetRollout Time: 47 secondsRevolution: 112Mission Duration: 7 days, 2 hours, 17 minutes, 42 secondsReturned to KSC: Sept. 8, 1985Orbit Altitude: 242 nautical milesOrbit Inclination: 28.45 degreesMiles Traveled: 2.9 million Crew Members Image above: STS-51I Crew photo with Commander Joe H. Engle, Pilot Richard O. Covey, and Mission Specialists James D. A. van Hoften, John M. Lounge and William F. Fisher. Image Credit: NASA Launch/Landing HighlightsThe launch scheduled for August 24 was scrubbed at T-5 minutes due to thunderstorms in the vicinity. The launch scheduled for August 25 was delayed when the orbiter's number five on-board general purpose computer failed. The launch on August 27 was delayed three minutes, one second due to a combination of weather and an unauthorized ship entering the restricted solid rocket booster recovery area.The mission shortened one day when the AUSSAT sunshield hung up on remote manipulator system camera and AUSSAT had to be deployed before scheduled.Mission HighlightsThree communications satellites were deployed: ASC-1, for American Satellite Company; AUSSAT-1, an Australian Communications Satellite; and SYNCOM IV-4, the Synchronous Communications Satellite. ASC-1 and AUSSAT-1 both attached to Payload Assist Module-D (PAM-D) motors. SYNCOM IV-4 (also known as LEASAT-4) failed to function after reaching the correct geosynchronous orbit. Fisher and van Hoften performed two extravehicular activities (EVAs) totaling 11 hours, 51 minutes. Part of time spent retrieving, repairing and redeploying LEASAT-3, which had been deployed on Mission 51-D. Middeck Payload: Physical Vapor Transport Organic Solid Experiment (PVTOS).
Frams von STS-51I Discovery Mission NASA-Video: