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WSF (Wake Shield Facility) was an american retrievable spacecraft that was released from the Shuttle. The wake region behind the 4 m disk-shaped, 1935 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. The addition of solar panels, additional central processing power, and robotic substrate sample manipulation for extended orbital operations.

The WSF-4 Free Flyer was planned for 1998. After the flights initial three WSF, the improved long-duration version was cancelled.

Nation: USA
Type / Application: Material research, retrievable
Operator: NASA
Power: Solar cells, batteries
Mass: 1700 kg
Satellite COSPAR Date LS Launch Vehicle Remarks
WSF 4 - cancelled CCK LC-39 Shuttle with ?


Further WSF missions:

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