This "Sail Wing" early hang glider is based on the design of Francis Rogallo. Francis Rogallo was a NASA research scientist, who in the 1970's was working on a research project to aid spacecraft during re-entry into the earth's atmosphere. NASA was looking for something to replace the re-entry parachutes. In answer to this requirement, Francis Rogallo developed a flexible delta wing kite that could be deployed during re-entry. The concept was that the "kite" would fill with air and create a drag, thus reducing the speed of the spacecraft. After the kite was deployed, it was designed to kept its shape with a series of tension lines. However, NASA dropped the project due to the difficulty in deployment of the kite.

YF-23A

YF-17

F-14A

F-5A

A-4A

YO-3A

DH-82A

XAT-6E

JB-1

1883 Glider

Gyrocopter

BD-5

RP-76

RP-5A

Sail Wing

108A

KD2R-5