Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1991-11-20
1994-01-25
Huppert, Michael S.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244 46, B64C 338
Patent
active
052808637
ABSTRACT:
The aircraft includes a free wing freely pivotally supported about a spanwise axis for flight in a free wing mode and lockable in selected predetermined, fixed angles of incidence with respect to a fuselage for flight in a fixed wing mode. The predetermined angle of incidence in the fixed wing flight mode is selected to provide sufficient lift for flying the aircraft at low speeds as necessary for takeoff and landing. The aircraft can be converted in flight between the free wing or conventional fixed wing aircraft flight modes. A control system is provided for selectively enabling or disabling the elevators on the horizontal stabilizer and the wing flaps.
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NASA Contractor Report 2946, "Analytical Study of a Free-Wing/Free-Trimmer Concept," Porter et al., Feb. 1978, pp. v-115.
NASA Contractor Report 3135, "Extended Analytical Study of the Free-Wing/Free-Trimmer Concept," Porter et al., 1979, pp. iii-85.
Bidwell Anne E.
Huppert Michael S.
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