Devices which may be borne in air and on devices applicable ther

Details Devices which may be borne in air and on devices applicable ther Devices which may be borne in air and on devices applicable ther

1988-08-26

1990-04-03

Peters Jr., Joseph F.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

244 8, 244 1715, B64C 2708

Patent

active

049133772

ABSTRACT:
An air-borne craft is provided with at least two pairs of propellers with substantially vertical axes. One pair of the propellers is provided on the front portion of the craft, the other pair on the rear portion with one propeller of each pair on the left side and the other propeller of the same pair on the right side of the body of the craft. The propellers are provided on their rear directions with flaps which can open and close relative to the profiles of the propellers. The arrangement of at least four propellers secures an economical operation in case of emergency landing and at flight. In case of an engine failure the craft has still a forwardly directed speed. This speed will open the flaps and the flow of air against the flaps will revolve the propellers. Thereby at least one arm of each of the propellers remains acting like a helicopter blade and the four propellers can carry the craft in a gliding procedure, flying forwardly with an angle of descent, towards the ground for the emergency landing.

REFERENCES:
patent: 2344945 (1944-03-01), Knox et al.
patent: 2372481 (1945-03-01), Gagas
patent: 2450992 (1948-10-01), Sanderson
patent: 2456485 (1948-12-01), Bendix
patent: 2483480 (1949-10-01), Stalker
patent: 3900176 (1975-08-01), Everett

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