STS-51I Mission Patch
MP51I
$9.95
20th Space Shuttle Mission
6th Flight of Discovery Crew:
Joseph H. Engle, Commander
Richard O. Covey, Pilot
James D.A. van Hoften, Mission Specialist
John M. Lounge, Mission Specialist
William F. Fisher, Mission Specialist
Three communications satellites were deployed during the mission. These included ASC-1 for American Satellite Company, AUSSAT-1 for Australia, both of which employed PAM-D solid rocket motors. SYNCOM-IV-4 (also called LEASAT-4) reached geosynchronous orbit but failed to operate.
