Bobko

Garn

Griggs

Hoffman

Seddon

Walker

Williams Donald

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STS-51-D Credit - NASA

12 April 1985 13:55 GMT. Landing Date: 1985-04-19 13:50:35. Flight Time: 7.00 days. Flight Up: STS-51-D. Flight Back: STS-51-D. Call Sign: Discovery. Crew: Bobko, Garn, Griggs, Hoffman, Seddon, Walker, Williams Donald. Program: STS.

Of note: First politician in space.

What went wrong: The inboard right-side brake locked on landing, resulting in severe brake damage and the explosion of the tire. Experienced erosion of the primary O-rings in both nozzle joints. There was no blow-by past either nozzle O-ring. 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.

STS-51-D Credit- www.spacefacts.de

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.

• 1985 Apr 12 - STS-51-D  Crew: Bobko, Garn, Griggs, Hoffman, Seddon, Walker, Williams Donald. Spacecraft: Discovery. Payload: Discovery F04 / Anik C1[PAM-D] / Syncom-4 3 /Orbus. Mass: 16,249 kg (35,822 lb). Launch Site: Cape Canaveral. Launch Vehicle: Shuttle. Duration: 7.00 days. Perigee: 445 km (276 mi). Apogee: 535 km (332 mi). Inclination: 28.50 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 Apr 16 - EVA STS-51-D-1  Crew: Hoffman, Griggs. EVA Type: Extra-Vehicular Activity. EVA Duration: 0.13 days. Spacecraft: Discovery.

  RMS 'Ryswatters' installed.

• 1985 Apr 19 - Landing of STS-51-D 

  STS-51-D landed at 13:50 GMT.