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STS-51-D

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	Topics STS-51-D Topic Home Crew Number in parentheses indicates number of spaceflights by each individual prior to and including this mission. Karol J. BobkoKarol J. Bobko Karol Joseph "Bo" Bobko is an American former NASA astronaut. ... (2) - Commander Donald E. WilliamsDonald E. Williams Captain Donald Edward Williams is a former NASA astronaut.... (1) - Pilot M. Rhea Seddon (1) - Mission Specialist Jeffrey A. HoffmanJeffrey A. Hoffman Jeffrey Alan Hoffman is a former NASA astronaut. ... (1) - Mission Specialist S. David GriggsS. David Griggs Stanley David Griggs was a NASA astronaut credited with conducting the first unscheduled extra-vehicular activity of the spa... (1) - Mission Specialist Charles D. Walker (2) - Payload Specialist Jake GarnFacts About Jake Garn Edwin Jacob Garn served as a U.S. Senator representing Utah from 1974 to 1993.... (1) - Payload Specialist Mission parameters MassMass Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to.... : Orbiter Liftoff: 113,802 kg Orbiter Landing: 89,816 kg Payload: 16,249 kg Perigee: 445 km Apogee: 535 km InclinationInclination Inclination in general is the angle between a reference plane and another plane or axis of direction.... : 28.5° PeriodOrbital period The orbital period is the time it takes a planet to make one full orbit.... : 94.4 min Space walk *Hoffman and Griggs* - EVA 1 EVA 1 Start: April 16, 1985 EVA 1 End: April 16, 1985 Duration: 3 hours, 06 minutes Mission highlights TELESAT-l (ANIK C-1) communications satellite deployed, attached to Payload Assist Module (PAM-D) motor. SYNCOMSyncom Syncom started as a 1961 NASA program for active geosynchronous communication satellites, all of which were developed and ma... 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 See also Space scienceSpace science Space science, or the space sciences, are fields of science that are concerned with the study or utilization of outer space.... Space shuttleSpace Shuttle NASA's Space Shuttle, officially called Space Transportation System , is the United States government's current manned... List of space shuttle missionsList of space shuttle missions -\|\|}This is a list of missions flown by space shuttles.... List of human spaceflights chronologicallyList of human spaceflights chronologically Some debate exists over the definition of space, and hence that of spaceflight.... External links