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Part of STS
Astronaut Rhea Seddon sits down to a meal in the middeck
Credit: NASA
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.

AKA: Discovery. Launched: 1985-04-12. Returned: 1985-04-19. Number crew: 7 . Duration: 7.00 days.

Payloads: Telesat (Canada communications satellite)-I with Payload Assist Module (PAM)-D deployment, Syncom IV-3 communications satellite deployment 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)
Pad 39-A (28)
16th Shuttle mission
4th Flight OV-103
Extended mission
5th KSC landing

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

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

Mission Objectives:

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.
Altitude: 285nm
Inclination: 28.5 degrees
Orbits: 110
Duration: Six days, 23 hours, 55 minutes, 23 seconds.
Distance: 2,889,785 miles

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

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.

More at: STS-51-D.

Family: Manned spaceflight. People: Bobko, Garn, Griggs, Hoffman, Seddon, Walker, Williams, Donald. Country: USA. Spacecraft: Discovery. Projects: STS. Launch Sites: Cape Canaveral. Agency: NASA, NASA Houston.
Photo Gallery

Credit: www.spacefacts.de

End effector of the Discovery's RMS with tools moves toward Syncom-IV
Credit: NASA

End effector of the Discovery's RMS with tools attached
Credit: NASA

Syncom-IV (LEASAT) satellite
Credit: NASA

Astronaut S. David Griggs waves to Orbiter during EVA
Credit: NASA

Astronaut Rhea Seddon works on flyswatter-like snagging device
Credit: NASA

1984 April 16 - .
1984 April 17 - .
1985 April 12 - . 13:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. Launch Platform: MLP1. LV Family: Shuttle. Launch Vehicle: Space Shuttle.
1985 April 16 - .
1985 April 19 - .

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