Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1977-05-26
1979-11-06
Kelmachter, Barry L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
91492, 244 2, 244 60, B64C 2708
Patent
active
041733215
ABSTRACT:
A vehicle for traveling in the air and on the ground is equipped with two, four, or eight propellers on vertical shafts, each driven by a rotary hydraulic motor of the radial-piston type. The motor comprises two rotors which are connected in individual hydraulic circuits supplied with fluid from different hydraulic pumps. One embodiment of the vehicle comprises an automobile with the propellers mounted in oblique air ducts or in shrouds pivotable in the travel direction. Each rotor of the hydraulic motors is coupled to the shaft unidirectionally so that in case of failure, the shaft can be driven by the other rotor. Each hydraulic pump preferably produces four equal fluid flows and comprises two rotors on a common shaft, each rotor with two separate groups of cylinders, the eccentricity of at least one of the rotors being adjustable. Both the hydraulic motor and the pump have inlet and outlet connections on the radial periphery of the housing. In another design intended for operation under high pressure, the hydraulic pump producing four equal simultaneously adjustable or four individually adjustable flows comprises one rotor with four separate cylinder groups, fluid passages leading to both axial sides, and interposed pressure inserts which are urged into a sealing contact with the rotor by small fluid pressure chambers formed at the axial outside of the inserts.
REFERENCES:
patent: 2514822 (1950-07-01), Wolfe
patent: 3253806 (1966-05-01), Eickmann
patent: 3457808 (1969-07-01), Eickmann
patent: 3691909 (1972-09-01), Eickmann
patent: 3977302 (1976-08-01), Eickmann
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