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STS-41D was the first Discovery shuttle flight. On board were Henry Hartsfield, Michael Coats, Richard Mullane, Steven Hawley, Judith Resnik, and Charles Walker. This mission carried out experiments including OAST-1 solar array structural testing.

Three satellites were deployed: Satellite Business System SBS-D, SYNCOM IV-2 (also known as LEASAT2) and TELSTAR. The 102- foot-tall, 13-loot-wide Office of Application and Space Technology (OAST-1) solar wing extended from the payload bay. The wing carried different types of solar cells and extended to full height several times. It demonstrated large lightweight solar arrays for the future in building large facilities in space such as the International Space Station. Other payloads included: Continuous Flow Electrophoresis System (CFES) Ill; Radiation Monitoring Equipment (RME); Shuttle Student Involvement Program (SSIP) experiment; lMAX camera, being flown for the second time; and an Air Force experiment, Cloud Logic to Optimize Use of Defense Systems (CLOUDS). The mission duration was 144 hours 56 minutes 4 seconds.

Alternate Names

  • Space Transport Sys 41D
  • 15234
  • STS 12
  • STS41D

Facts in Brief

Launch Date: 1984-08-30
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 21524 kg

Funding Agency

  • NASA-Office of Space Flight (United States)


  • Human Crew

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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