Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1983-07-01
1984-12-04
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244123, 244219, 52108, 416240, 416142, B64C 356
Patent
active
044859910
ABSTRACT:
A rollable airfoil, and aircraft for utilizing the airfoil. The airfoil is made of an upper skin having a cambered configuration and formed of a material having sufficient elasticity that the camber can be broken and the skin rolled into a coil. The lower skin is straight to provide the desired flat under surface of an airfoil, and to pull the edges of the upper skin towards each other to assist in maintaining the camber. The lower skin is stretchable to allow the upper skin to be flattened for rolling. A filler material, such as an expanded plastic, can fill the space between the upper skin and lower skin to dampen vibration.
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patent: 2406625 (1946-08-01), Oglesby
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patent: 3300910 (1967-01-01), Isaac
patent: 3386220 (1968-06-01), Staats
patent: 3508587 (1970-04-01), March
patent: 3743440 (1973-07-01), Moore
Barefoot Galen L.
Middleton James B.
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