Aircraft with two alternatingly operated propellers of different

Details Aircraft with two alternatingly operated propellers of different Aircraft with two alternatingly operated propellers of different

1995-06-05

1998-04-28

Kashnikow, Andres

Aeronautics and astronautics

Aircraft propulsion

244 59, 244 65, 416129, 416 87, B64C 3900

Patent

active

057434891

ABSTRACT:
An aircraft has at least one drive motor coupled to first and second propellers for forward thrust of the aircraft. The first propeller is dimensioned for takeoff and landing conditions and for flight conditions below a predetermined first flight altitude. The second propeller has a radius which is larger than a radius of the first propeller and is dimensioned for a second flight altitude which is substantially greater than the first flight altitude. The two propellers are alternatingly coupled with the at least one drive motor so that the two propellers are respectively individually adapted to the power of the at least one drive motor for a full utilization of the power of the at least one drive motor for forward thrust.

REFERENCES:
patent: 1771654 (1930-07-01), Powell
patent: 2604276 (1952-07-01), Huben
patent: 2979288 (1961-04-01), Klein
patent: 3586262 (1971-06-01), Sherman
patent: 4842484 (1989-06-01), Johnson

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