Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1994-06-15
1996-04-23
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244113, B64C 338
Patent
active
055096239
ABSTRACT:
A free wing aircraft including a free wing pivotally supported about a spanwise axis for flight in a free wing mode of operation with respect to the fuselage is disclosed. The free wing is capable of being deflected into a nose down configuration sufficient to create an aerodynamic braking effect to decrease air speed after landing upon roll-out. This aerodynamic braking effect can also be sufficient to create negative lift that plants the aircraft firmly down, increasing the coefficient of friction and allowing the aircraft brakes to be more effective relative to a fixed wing aircraft at touchdown.
REFERENCES:
patent: 1772586 (1930-08-01), Wilford
patent: 1821764 (1931-09-01), Murray
patent: 2205714 (1940-06-01), Doepp
patent: 3415469 (1968-12-01), Spratt
patent: 4928907 (1990-05-01), Zuck
Barefoot Galen L.
Freewing Aerial Robotics Corporation
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