Air jet reaction contrarotating rotor gyrodyne
OwnerMaurice Ramme, Monte Rammeinventors
Life of this patent
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Abstract
A high wing, twin jet gyrodyne having air jet reaction, contrarotating rotors powered with bypass air from twin turbofan engines. Tail pipes from the turbofan engines are disposed parallel to and at opposite sides of a longitudinal duct for discharging bypass air rearwardly. Control valve means can control supply of bypass air selectively to the hollow rotor mast for driving the rotors and to the longitudinal air discharge duct. The aft portions of the tail pipes and of the air discharge duct are connected by a horizontal stabilizer and rudders are located in the slipstream discharged from the tail pipes and the air discharge duct. The wings have drop tip sections providing flotation outriggers in their downwardly projecting positions.
Claims7
A gyrodyne comprising a hollow mast, contrarotating rotors carried by said hollow mast, turbofan engine means carried by the gyrodyne, air discharge means carried by the blades of said contrarotating rotors for discharging transversely thereof air received from said hollow mast to effect reaction rotation of said rotors, duct means connecting said turbofan engine means and said hollow mast for receiving bypass air from said hollow turbofan engine means and conveying it to said hollow mast for flow therethrough to the rotor blades, and control means for varying the distribution of the air flowing through said hollow mast from said hollow turbofan engine means to supply air to the blades of one of said rotors differing in amount from the amount of air supplied to the blades of the other of said rotors and being operable to vary the difference in such amounts including supplying to all the blades of one of said rotors substantially all the air flowing through said hollow mast from said turbofan engine means.
A gyrodyne comprising a fixed wing, a hollow mast mounted centrally of the gyrodyne, contrarotating rotors carried by said hollow mast, tail pipes extending rearward from said turbofan engines and disposed in substantially spaced parallel relationship for discharging exhaust gas from said turbofan engines and forming an outrigger, an air duct extending longitudinally behind said turbofan engines for discharging an air jet therefrom, duct means connecting said turbofan engines, said hollow mast and said air duct for receiving bypass air from sa1d turbofan engines, control means for supplying at least a portion of the bypass air from said turbofan engines to said air duct for eifecting jet thrust for the gyrodyne, means mounting each blade of each of said rotors to turn about a spanwise axis of such rotor blade for altering its pitch, counterweight means carried by the tip portion of each rotor blade and projecting beyond the major portion of the leading edge of each rotor blade turnable about a spanwise axis for substantially balancing the rotor blade statically about such axis, pitch control means for controlling the collective pitch of the blades of both of said rotors, brake means effective to retard the rotative speed of both of said rotors, means for proportioning the flow of air from said duct means through said hollow mast to said rotors, horizontal stabilizer means connecting the rearward end portions of said tail pipes and said air duct, vertical control surfaces mounted on said horizontal stabilizer means in alignment with the discharge ends of said tail pipes for controlling the direction of the gyrodyne, said vertical control surfaces being bifurcated and their bifurcations being spreadable to divert exhaust gas emitted from said tail pipes laterally and forward to constitute thrust-reversing means, downwardly directed control jet means including a nose jet, a tail jet and two wing jets carried by said wing at opposite sides of said hollow mast for projecting air downward to produce trim control forces, and means for supplying air under pressure from said turbofan engines to said control jet means.
A gyrodyne comprising a fixed wing, a hollow mast mounted centrally of the gyrodyne, controtating rotors carried by said hollow mast, twin turbofan engines mounted at opposite sides of said hollow mast, tail pipes extending rearward from said turbofan engines and disposed in substantially spaced parallel relationship for discharging exhaust gas from said turbofan engines and forming an outrigger, an air duct extending longitudinally behind said turbofan engines for discharging an air jet therefrom, duct means connecting said turbofan engines, said hollow mast and said air duct for receiving bypass air from said turbofan engines, control means for supplying at least a portion of the bypass air from said turbofan engines to said air duct for effecting jet thrust for the gyrodyne, means mounting each blade of each of said rotors to turn about a spanwise axis of such rotor blade for altering its pitch, pitch control means for controlling the collective pitch of the blades of both of said rotors and for controlling the cyclic pitch of the blades of at least one rotor, brake means effective to retard the rotative speed of both of said rotors, means for proportioning the flow of air from said duct means through said hollow mast to said rotors, horizontal stabilizer means connecting the rearward end portions of said tail pipes and said air duct, and vertical control surfaces mounted on said horizontal stabilizer means in alignment with the discharge ends of said tail pipes for controlling the direction of the gyrodyne, said vertical control surfaces being bifurcated and their bifurcations being spreadable to divert exhaust gas emitted from said tail pipes laterally and forward to constitute thrust-reversing means.
A gyrodyne comprising a high fixed wing, a hollow mast carried by said high fixed wing, contrarotating rotors carried by said hollow mast, twin turbofan engines carried by said high fixed wing at opposite sides of said hollow mast, tail pipes extending rearward from said turbofan engines and disposed in substantially spaced parallel relationships for discharging exhaust gas from said turbofan engines and forming an outrigger, an air duct extending longitudinally behind said turbofan engines for discharging an air jet therefrom, duct means connecting said turbofan engines, said hollow mast and said air duct for receiving bypass air from said turbofan engines, control means for supplying at least a portion of the bypass air from said turbofan engines to said air duct for effecting jet thrust for the gyrodyne, means mounting each blade of at least one of said rotors to turn about a spanwise axis of such rotor blade for altering its pitch, pitch control means for controlling the collective pitch of the blades of at least one of said rotors, brake means effective to retard the rotative speed of at least one of said rotors, means for proportioning the flow of air from said duct means through said hollow mast to said rotors, horizontal stabilizer means connecting the rearward end portions of said tail pipes and said air duct, vertical control surfaces mounted on said horizontal stabilizer means in alignment with the discharge ends of said tail pipes for controlling the direction of the gyrodyne, said vertical control surface being bifurcated and their bifurcations being spreadable to divert exhaust gas emitted from said tail pipes laterally and forward to constitute thrust-reversing means, downwardly directed control jet means including a nose jet, a tail jet and two wing jets carried by said wing at opposite sides of said hollow mast for projecting air downward to product trim control forces, and means for supplying air under pressure from said turbofan engines to said control jet means.
A gyrodyne comprising a high fixed wing, a hollow mast carried by said high fixed wing, contrarotating rotors carried by said rotor mast, twin turbofan engines carried by said high fixed wing at opposite sides of said hollow mast, tail pipes extending rearward from said turbofan engines and disposed in substantially spaced parallel relationship for discharging exhaust gas from said turbofan engines and forming an outrigger, an air duct extending longitudinally behind said turbofan engines for discharging an iar jet therefrom, duct means connecting said turbofan enginges, said hollow mast and said air duct for receiving bypass air from said turbofan engines, control means for supplying at least a portion of the bypass air from said turbofan engines to said air duct for effecting jet thrust for the gyrodyne, means mounting each blade of at least one of said rotors to turn about a spanwise axis of such rotor blade for altering its pitch, counterweight carried by the tip portion of each rotor blade and projecting forward beyond the major portion of the leading edge of each rotor blade turnable about a spanwise axis for substantially balancing the rotor blade statically about such axis, pitch control means for controlling the collective pitch of the blades of at least one of said rotors, brake means effective to retard the rotative speed of at least one of said rotors, means for proportioning the flow of air from said duct means through said hollow rotor mast to said rotors, horizontal stabilizer means connecting the rearward end portions of said tail pipes and said air duct, vertical control surfaces mounted on said horizontal stabilizer means in alignment with the discharge ends of said tail pipes for controlling the direction of the gyrodyne, said vertical control surfaces being bifurcated and their bifurcations being spreadable to divert exhaust gas emitted from said tail pipes laterally and forward to constitute thrust-reversing means, rotor rotation coordinating means interconnecting said contrarotating rotors for conjoint synchronized rotation thereof in opposite directions, downwardly directed control jet means including a nose jet, a tail jet and two wing jets carried by said wing at opposite sides of said hollow mast for projecting air downward to product trim control forces, and means for supplying air under pressure from said turbofan engines to said control jet means.
A gyrodyne comprising a fixed wing, a hollow mast mounted centrally of the gyrodyne, contrarotating rotors carried by said hollow mast, twin turbofan engines mounted at opposite sides of said hollow mast, tail pipes extending rearward from said turbofan engines and disposed in substantially spaced parallel relationship for discharging exhaust gas from said turbofan engines and forming an outrigger, duct means connecting said turbofan engines and hollow mast for receiving bypass air from said turbofan engines, brake means effective to retard the rotative speed of both of said rotors, means for proportioning the flow of air from said duct means through said hollow mast to said rotors, horizontal stabilizer means connecting the rearward end portions of said tail pipes, and vertical control surfaces mounted on said horizontal stabilizer means in alignment with the discharge ends of said tail pipes for controlling the direction of the gyrodyne, said vertical control surfaces being bifurcated and their bifurcations being spreadable to divert exhaust gas emitted from said tail pipes laterally and forward to constitute thrust-reversing means.
Dependencies are inferred from the claim text.