Encyclopedia Astronautica
STS-39



ists39.jpg
STS-39
Credit: www.spacefacts.de - www.spacefacts.de
Crew: Bluford, Coats, Hammond, Harbaugh, Hieb, McMonagle, Veach. Manned seven crew. Deployed USA-70, CRO A, CRO B, CRO C; deployed and retrieved Infrared Background Signature Survey .

Manned seven crew. Deployed USA 70, CRO A, CRO B, CRO C; deployed and retrieved IBSS. Payloads: Infrared Background Signature Survey (lBSS), Air Force Program (AFP)-675, Space Test Payload (STP)-I, Multi-Purpose Experiment Canister (MPEC), Cloud Logic to Optimize Use of Defense Systems (CLOUDS)-1A, Radiation Monitoring Equipment (RME)-lll.

Orbits of Earth: 134. Distance traveled: 5,584,423 km. Orbiter Liftoff Mass: 112,030 kg. Orbiter Mass at Landing: 95,620 kg. Payload to Orbit: 9,712 kg. Payload Returned: 9,337 kg. Landed at: Runway 15 at Kennedy Space Center, Florida. Landing Speed: 389 kph. Touchdown miss distance: 51 m. Landing Rollout: 2,789 m.

NASA Official Mission Narrative

Mission Name: STS-39 (40)
DISCOVERY (12)
Pad 39-A (40)
40th Shuttle mission
12th Flight OV-103
7th Rollback
Diverted landing
7th KSC landing

Crew:
Michael L. Coats (3), Commander
L. Blaine Hammond, Jr.(1), Pilot
Guion S. Bluford Jr.(3), Mission Specialist 1
Gregory J. Harbaugh (1), Mission Specialist 2
Richard J. Hieb (1), Mission Specialist 3
Donald R. McMonagle (1), Mission Specialist 4
Charles L. Veach (1), Mission Specialist 5

Milestones:
Flow A:
OPF - Oct. 17,1990
VAB - Feb. 9,1991
PAD - Feb. 15, 1991
Flow B (rollback):
VAB - March 7,1991
OPF - March 15, 1991
VAB - March 25,1991
PAD - April 1, 1991

Payload:
DoD(8),AFP-675,IBSS,STP-01,MPEC
Mission Objectives:

Launch:
April 28, 1991,7:33:14 a.m. EDT. Launch originally scheduled for March 9, but during processing work at Pad A, significant cracks found on all four lug hinges on the two external tank umbilical door drive mechanisms. NASA managers opted to roll back the vehicle to the VAB on March 7, and then to OPF for repair. Hinges replaced with units taken from orbiter COLUMBIA, and reinforced. Discovery returned to pad on April 1, and launch re-set for April 23. Mission again postponed when, during prelaunch external tank loading, a transducer on high-pressure oxidizer turbopump for main engine number three showed readings out of specification. Transducer and its cable harness were replaced and tested. Launch was rescheduled for April 28. Launch Weight: 247,373 lbs
Orbit:
Altitude: 140nm
Inclination: 57.0 degrees
Orbits: 134
Duration: 8 days, 7 hours, 22 minutes, 23 seconds.
Distance: 3,470,000 miles

Hardware:
SRB: BI-043
SRM: 360L015
ET : 46/LWT-39
MLP : 2
SSME-1: SN-2026
SSME-2: SN-2030
SSME-3: SN-2029

Landing:
May 6, 1991, 2:55:35 p.m. EDT, Runway 15, Kennedy Space Center, Fla. Rollout distance: 9,235 feet. Rollout time: 56 secs. Landing diverted to KSC because of unacceptably high winds at planned landing site, Edwards. Landing Weight: 211,512 lbs.

Mission Highlights:
Dedicated Department of Defense mission. Unclassified payload included Air Force Program-675 (AFP675); Infrared Background Signature Survey (IBSS) with Critical Ionization Velocity (CIV), Chemical Release Observation (CRO) and Shuttle Pallet Satellite-II (SPAS-II) experiments; and Space Test Payload-1 (STP-1). Classified payload consisted of Multi-Purpose Release Canister (MPEC). Also on board was Radiation Monitoring Equip- ment III (RME III) and Cloud Logic to Optimize Use of Defense Systems-IA (CLOUDS-I).

AKA: Discovery.
First Launch: 1991.04.28.
Last Launch: 1991.05.06.
Duration: 8.31 days.

More... - Chronology...


Associated People
  • Bluford Bluford, Dr Guion Steward Jr 'Guy' (1942-) African-American engineer mission specialist astronaut. Flew on STS-8, STS-61-A, STS-39, STS-53. First African-American in space. Flew 144 combat missions in Vietnam. More...
  • Veach Veach, Charles Lacy (1944-1995) American engineer mission specialist astronaut. Flew on STS-39, STS-52. Grew up in Honolulu, Hawaii. Died of cancer. More...
  • Coats Coats, Michael Lloyd 'Mike' (1946-) American test pilot astronaut. Flew on STS-41-D, STS-29, STS-39. Flew 315 combat missions in Vietnam. More...
  • Hammond Hammond, Lloyd Blaine Jr (1952-) American test pilot astronaut. Flew on STS-39, STS-64. More...
  • McMonagle McMonagle, Donald Ray 'Don' (1952-) American test pilot astronaut. Flew on STS-39, STS-54, STS-66. More...
  • Hieb Hieb, Richard James 'Rick' (1955-) American engineer mission specialist astronaut. Flew on STS-39, STS-49, STS-65. More...
  • Harbaugh Harbaugh, Gregory Jordan 'Greg' (1956-) American engineer mission specialist astronaut. Flew on STS-39, STS-54, STS-71, STS-82. 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-39 Chronology


1991 April 28 - . 11:33 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. LV Family: Shuttle. Launch Vehicle: Shuttle. LV Configuration: Space Shuttle STS-39.
  • STS-39 - . Call Sign: Discovery. Crew: Bluford; Coats; Hammond; Harbaugh; Hieb; McMonagle; Veach. Payload: Discovery F12. Mass: 9,712 kg (21,411 lb). Nation: USA. Related Persons: Bluford; Coats; Hammond; Harbaugh; Hieb; McMonagle; Veach. Agency: NASA Houston. Program: STS. Class: Manned. Type: Manned spaceplane. Flight: STS-39. Spacecraft: Discovery. Duration: 8.31 days. Decay Date: 1991-05-06 . USAF Sat Cat: 21242 . COSPAR: 1991-031A. Apogee: 263 km (163 mi). Perigee: 248 km (154 mi). Inclination: 57.0000 deg. Period: 89.60 min. Manned seven crew. Deployed USA 70, CRO A, CRO B, CRO C; deployed and retrieved IBSS. Payloads: Infrared Background Signature Survey (lBSS), Air Force Program (AFP)-675, Space Test Payload (STP)-I, Multi-Purpose Experiment Canister (MPEC), Cloud Logic to Optimize Use of Defense Systems (CLOUDS)-1A, Radiation Monitoring Equipment (RME)-lll.

1991 May 6 - .
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