Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1976-02-02
1977-08-09
Blix, Trygve M.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244199, 416 20R, 416 90A, B64C 2306
Patent
active
040405788
ABSTRACT:
This invention is for rotating machines of all types such as helicopters, propellers, compressors, to be equipped with slotted tube or a tube with series of holes extending outwardly in the spanwise direction near the trailing edge of a jet-circulation-control rotor-blade tip for blowing jets of fluid in the direction opposite to the lift of the blade. Thereby achieving flow in the form of a jet sheet to abate, diffuse the undesirable blade-tip vortices and to increase the overall efficiency of the machine.
REFERENCES:
patent: 2925129 (1960-02-01), Yuan et al.
patent: 3446288 (1969-05-01), Yuan
patent: 3936013 (1976-02-01), Yuan
Blix Trygve M.
Kelmachter Barry L.
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