Aeronautics and astronautics – Aircraft sustentation – Sustaining airfoils
Patent
1982-12-02
1985-05-28
Blix, Trygve M.
Aeronautics and astronautics
Aircraft sustentation
Sustaining airfoils
244 122, 244 23C, 244 75R, B64C 2104
Patent
active
045195625
ABSTRACT:
A vertical take-off and landing (VTOL) aircraft is disclosed. In one embodiment designed for manned flight, the aircraft employs an aerodynamically-shaped body carrying a pair of lifting elements disposed longitudinally along the body on opposite sides thereof. The lifting elements extend outwardly and curve smoothly downward from a horizontal to a vertical orientation at the outboard edge. Lifting air is flowed over them transverse to the direction of flight. In a second embodiment designed for unmanned use such as cropdusting, military surveillance, or the like, the body is a single circular lifting element of parabolic cross-section. In both embodiments, a turbine is carried within the body to provide forward thrust and, primarily, a supply of pressurized air which is flowed through a nozzle slit opening outwardly over the tops of the lifting element(s) in confined segments. A porous aspirating member provides a divergent outer boundary to the airflow adjacent the tops of the lifting surfaces in a manner which induces augmenting air into the primary airstream in sufficient quantity to maintain the resultant combined airflow in a laminar flow to maximize lift.
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Blix Trygve M.
Corl Rodney
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