Encyclopedia Astronautica
STS-51-D



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STS-51-D
Astronaut Rhea Seddon sits down to a meal in the middeck
Credit: NASA
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STS-51-D
Credit: www.spacefacts.de - www.spacefacts.de
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STS-51-D
End effector of the Discovery's RMS with tools moves toward Syncom-IV
Credit: NASA
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STS-51-D
End effector of the Discovery's RMS with tools attached
Credit: NASA
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STS-51-D
Syncom-IV (LEASAT) satellite
Credit: NASA
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STS-51-D
Astronaut S. David Griggs waves to Orbiter during EVA
Credit: NASA
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STS-51-D
Astronaut Rhea Seddon works on flyswatter-like snagging device
Credit: NASA
Crew: Bobko, Garn, Griggs, Hoffman, Seddon, Walker, Williams Donald. First politician in space. Deployed Telesat-I (successful) and Syncom IV-3 (motor failed). Inboard right-side brake locked on landing, resulting in severe damage. Senator aboard resented, and had one of the worst cases of space sickness ever recorded.

Manned seven crew. Payloads: Telesat (Canada communications satellite)-I with Payload Assist Module (PAM)-D deployment, Syncom IV-3 communications satellite deploy-ment with its unique stage (unique stage failed to ignite), Continuous Flow Electrophoresis (CFES), Phase Partitioning Experiment (PPE), student experiments, two getaway specials (GAS) Informal science studies (Toys in Space).

Orbits of Earth: 109. Distance traveled: 4,650,658 km. Orbiter Liftoff Mass: 113,802 kg. Orbiter Mass at Landing: 89,816 kg. Payload to Orbit: 16,249 kg. Payload Returned: 6,009 kg. Landed at: Runway 33 at Kennedy Space Center, Florida. Landing Speed: 370 kph. Touchdown miss distance: 499 m. Landing Rollout: 3,179 m. EVA: Jeffrey Hoffman and David Griggs, duration, 3 hours, 10 minutes.

NASA Official Mission Narrative

Mission Name: 51-D (16)
DISCOVERY (4)
Pad 39-A (28)
16th Shuttle mission
4th Flight OV-103
Extended mission
5th KSC landing

Crew:
Karol J. Bobko (2), Commander
Donald E. Williams (1), Pilot
M. Rhea Seddon (1), Mission Specialist 1
Jeffrey A. Hoffman (1), Mission Specialist 2
S. David Griggs (1), Mission Specialist 3
Charles D. Walker (2), Payload Specialist 1
Sen E. Jake Garn (1), Payload Specialist 2

Milestones:
OPF - Jan. 28, 1985
VAB - March 23,1985
PAD - March 28, 1985

Payload:
LEASAT-3,ANIK-E2,CFES(6),AFE,PPE/SAS,SSIP(x2),GAS(x2)
Mission Objectives:

Launch:
April 12, 1985, 8:59:05 a.m. EST. Launch set for March 19 rescheduled to March 28 due to remanifesting of payloads from canceled mission 51-E. Delayed further due to damage to orbiter's payload bay door when facility access platform dropped. Launch April 12 delayed 55 minutes when ship entered restricted solid rocket booster recovery area. Launch Weight: 250,891 lbs.
Orbit:
Altitude: 285nm
Inclination: 28.5 degrees
Orbits: 110
Duration: Six days, 23 hours, 55 minutes, 23 seconds.
Distance: 2,889,785 miles

Hardware:
SRB: BI-018
SRM: L017(HPM)
ET : 18/LWT-11
MLP : 1
SSME-1: SN-2109
SSME-2: SN-2018
SSME-3: SN-2012

Landing:
April 19, 1985,8:54:28 a.m. EST, Runway 33, Kennedy Space Center, Fla. Rollout distance: 10,430 feet. Rollout time: 63 seconds. Extensive brake damage and blown tire during landing prompted landing of future flights at Edwards Air Force Base until implementation of nose wheel steering. Landing Weight: 198,014 lbs.

Mission 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 spacecraft sequencer failed to initiate antenna deployment, spin.up and ignition of 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 Get Away 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.

AKA: Discovery.
First Launch: 1985.04.12.
Last Launch: 1985.04.19.
Duration: 7.00 days.

More... - Chronology...


Associated People
  • Garn Garn, Edwin Jacob 'Jake' (1932-) American senator payload specialist astronaut. Flew on STS-51-D. More...
  • Bobko Bobko, Karol Joseph 'Bo' (1937-) American pilot astronaut. Flew on STS-6, STS-51-D, STS-51-J. More...
  • Griggs Griggs, Stanley David (1939-1989) American test pilot mission specialist astronaut. Flew on STS-51-D. Died in the crash of a World-War-II-era training plane. More...
  • Hoffman Hoffman, Dr Jeffrey Alan 'Jeff' (1944-) Jewish-American astrophysicist mission specialist astronaut. Flew on STS-51-D, STS-35, STS-46, STS-61, STS-75. More...
  • Seddon Seddon, Dr Margaret Rhea (1947-) American physician mission specialist astronaut. Flew on STS-51-D, STS-40, STS-58. Physician. Was married to astronaut Robert Lee (Hoot) Gibson. More...
  • Walker Walker, Charles David (1948-) American engineer payload specialist astronaut. Flew on STS-41-D, STS-51-D, STS-61-B. More...

Associated Countries
Associated Spacecraft
  • Discovery American manned spaceplane. 39 launches, 1984.08.30 to 2011.02.24. More...

See also
Associated Manufacturers and Agencies
  • NASA American agency overseeing development of rockets and spacecraft. National Aeronautics and Space Administration, USA, USA. More...
  • NASA Houston American agency overseeing development of rockets and spacecraft. Houston, Houston, USA. More...

Associated Programs
  • STS The Space Transportation System (Space Shuttle) was conceived originally as a completely reusable system that would provide cheap, routine access to space and replace all American and civilian military launch vehicles. Crippled by technological overreach, political compromise, and budget limitations, it instead ended up costing more than the expendable rockets it was to have replaced. STS sucked the money out of all other NASA projects for half a century. The military abandoned its use after the Challenger shuttle explosion in the 1980's. More...

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...

STS-51-D Chronology


1985 April 12 - . 13:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. LV Family: Shuttle. Launch Vehicle: Shuttle. LV Configuration: Space Shuttle STS-23/51-D.
  • STS-51-D - . Call Sign: Discovery. Crew: Bobko; Garn; Griggs; Hoffman; Seddon; Walker; Williams, Donald. Payload: Discovery F04 / Anik C1[PAM-D] / Syncom-4 3 /Orbus. Mass: 16,249 kg (35,822 lb). Nation: USA. Related Persons: Bobko; Garn; Griggs; Hoffman; Seddon; Walker; Williams, Donald. Agency: NASA Houston. Program: STS. Class: Manned. Type: Manned spaceplane. Flight: STS-51-D. Spacecraft: Discovery. Duration: 7.00 days. Decay Date: 1985-04-19 . USAF Sat Cat: 15641 . COSPAR: 1985-028A. Apogee: 535 km (332 mi). Perigee: 445 km (276 mi). Inclination: 28.5000 deg. Period: 94.40 min. Manned seven crew. Payloads: Telesat (Canada communications satellite)-I with Payload Assist Module (PAM)-D deployment, Syncom IV-3 communications satellite deploy-ment with its unique stage (unique stage failed to ignite), Continuous Flow Electrophoresis (CFES), Phase Partitioning Experiment (PPE), student experiments, two getaway specials (GAS) Informal science studies (Toys in Space).

1985 April 16 - .
  • EVA STS-51-D-1 - . Crew: Hoffman; Griggs. EVA Type: Extra-Vehicular Activity. EVA Duration: 0.13 days. Nation: USA. Related Persons: Hoffman; Griggs. Program: STS. Class: Manned. Type: Manned spaceplane. Flight: STS-51-D. Spacecraft: Discovery. Summary: RMS 'Ryswatters' installed..

1985 April 19 - .
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