Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1984-06-18
1987-11-03
Barefoot, Galen
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244 1725, 244 56, B64C 2708, B64C 2752
Patent
active
047039060
ABSTRACT:
In a vehicle or device a fluid motor is employed to drive rotary members, such as wheels, propellers, tracks. The motor is provided with an arrangement which includes a control means and an axially moveable member. By utilizing the control means, for example, by a flow of fluid, the axially moveable member is used to apply an action, which is not common to the usual operation of fluid motors. The arrangement may be used to arrest the rotor of the motor from rotation when no pressure is in the driving fluid line. It may also be used to control the pitch of propellers with variable pitch arrangements. Also possible is to use the arrangement to automatically obtain an auto - rotation of rotor blades on vertical axes of vertically take off and landing vehicles, when the pressure in the fluid line to the motors for driving the motors drops below a predetermined minimum of pressure. The speciality of the preferred embodiment of the invention is to provide an upper structure of an airborne craft with a plurality of propellers with substantially vertical axes to carry pivotable on the mentioned structure a body of the craft below the mentioned structure, while the body contains the cabine and the power plant as well as the fluid flow supply means, the upper structure is pivotable in a limited extend relative to the body and the fluid under pressure is transferred from the fluid flow supply means in the body to the upper structure and to the fluid motors which drive the propellers of the upper structure.
REFERENCES:
patent: 1351821 (1920-09-01), Wilkinson
patent: 1974961 (1934-09-01), Johnson
patent: 2514639 (1950-07-01), Haack
patent: 2514822 (1950-07-01), Wolfe, Jr.
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