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.
|Type / Application:||Material research, retrievable|
|Power:||Solar cells, batteries|
|WSF 4||-||cancelled||CCK LC-39||Shuttle||with ?|