Vertical lift device

Details Vertical lift device Vertical lift device

1976-10-28

1978-10-03

Kelmachter, Barry L.

Aeronautics and astronautics

Aircraft, heavier-than-air

Fluid sustained

244 122, B64C 2902

Patent

active

041179927

ABSTRACT:
A vertical lift device comprised of a generally vertically disposed cylindrical tunnel, open at the top and bottom ends, with a driven propeller axially mounted at the open top end to direct a stream of air downwardly through the tunnel. A first portion of the stream of air is spirally directed outwardly through a peripheral portion of the open bottom end to create first lift forces for the device by using jet stream action. A second portion of the air stream is directed downwardly through a central axially disposed tube in the cylindrical tunnel to twin fans which redirect the second portion upwardly into a truncated cone, surrounding the central tube, to increase the pressure against the inner wall surface of the cone to create second lift forces.

REFERENCES:
patent: 3410507 (1968-11-01), Moller
patent: 3785592 (1974-01-01), Kerruish

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