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WSF 2, also known as Wake Shield Facility 2, was an American spacecraft that was released from STS 69. The wake region behind the disk-shaped, 1,935-kg spacecraft would have been even more vacuous than the ambient region and could have enabled growth of slimmer thin-film semiconductors through molecular beam epitaxy technique during a planned two-day mission. The experiment had to be terminated and the spacecraft retrieved sooner than was planned because of overheating problems. The results of the experiment were unavailable.

Alternate Names

  • Wake Shield Facility 2
  • 23669
  • WSF2

Facts in Brief

Launch Date: 1995-09-11
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 1935 kg

Funding Agency

  • Unknown (United States)


  • Technology Applications

Additional Information

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

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