- STS-51-D
Infobox Space mission
mission_name = STS-51-D
insignia = Sts-51-d-patch.png
shuttle = Discovery
launch_pad = 39-A
launch =April 12 ,1985 , 13:59:05UTC
landing =April 19 ,1985 , 13:54:28 UTC
KSC, Runway 33
duration = 6d/23:55:23
altitude = 528 km
inclination = 28.5°
orbits = 110
distance = 4,650,658 km
crew_photo = STS-51-D Crew.gif
crew_caption = Back row L-R: Griggs, Walker, Garn Front row: L-R: Bobko, Williams, Seddon, Hoffman.
previous =STS-51-C
next =STS-51-B STS 51-D was the sixteenth flight of a space shuttle and the fourth flight of "Discovery". It conducted the fifth landing at
Kennedy Space Center ,Florida .Crew
Number in parentheses indicates number of spaceflights by each individual prior to and including this mission.
*
Karol J. Bobko (2) - Commander
*Donald E. Williams (1) - Pilot
*M. Rhea Seddon (1) - Mission Specialist
*Jeffrey A. Hoffman (1) - Mission Specialist
*S. David Griggs (1) - Mission Specialist
*Charles D. Walker (2) - Payload Specialist
*Jake Garn (1) - Payload SpecialistCrew notes
Garn was a Republican senator from
Utah . He was the first sitting member of Congress in space and is sometimes considered the first space tourist.Fact|date=May 2007Mission parameters
*
Mass :
**"Orbiter Liftoff:" 113,802 kg
**"Orbiter Landing:" 89,816 kg
**"Payload:" 16,249 kg
*Perigee : 445 km
*Apogee : 535 km
*Inclination : 28.5°
*Period: 94.4 minpace walk
* " Hoffman and Griggs " - EVA 1
*EVA 1 Start:April 16 ,1985
*EVA 1 End: April 16, 1985
*Duration: 3 hours, 06 minutesMission highlights
TELESAT-l (ANIK C-1) communications satellite deployed, attached to Payload Assist Module (PAM-D) motor.
SYNCOM IV-3 (also known as LEASAT-3) deployed, but the spacecraft sequencer failed to initiate antenna deployment, spin-up, and ignite the perigee kick motor. Mission extended two days to make certain sequencer start lever in proper position. Griggs and Hoffman performed space walk to attach Flyswatter devices to remote manipulator system. Seddon engaged LEASAT lever using remote manipulator system but post deployment sequence did not begin. Other payloads: Continuous Flow Electrophoresis System (CFES) III, flying for sixth time; two Shuttle Student Involvement Program (SSIP) experiments; American Flight Echocardiograph (AFE); two Getaway Specials; Phase Partitioning Experiments (PPE); astronomy Photography verification test; medical experiments and "toys in space," an informal study of the behavior of simple toys in weightless environment, with results to be made available to school students. Extensive brake damage and blown tire during landing prompted landing of future flights at Edwards Air Force Base until implementation of nose wheel steering.Gallery
ee also
*
Space science
*Space shuttle
*List of space shuttle missions
*List of human spaceflights chronologically External links
* [http://science.ksc.nasa.gov/shuttle/missions/51-d/mission-51-d.html NASA mission summary]
* [http://www.nss.org/resources/library/shuttlevideos/shuttle16.htm STS-51D Video Highlights]
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