Aircraft variable geometry nozzle
OwnerWalter J. Rozmusinventor
Life of this patent
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Abstract
The present invention relates to a method and apparatus for providing an operable divergent/convergent variable geometry exhaust nozzle for jet propelled aircraft. A multiplicity of hinged, overlapping, nozzle blades circumferentially surround the exhaust nozzle thereby providing a divergent cylindrical exhaust nozzle that may be convergingly reduced to a conical configuration by action of a remotely controlled solenoid.
Claims20
In a jet propelled aircraft receiving its forward propelling thrust from the exit of high velocity gases from a rearwardly directed tail pipe, said tail pipe including a variable area exhaust nozzle affixed to the exit end thereof, said nozzle having a multiplicity of axially extending overlapping blades circumferentially spaced about the exit end of said tail pipe, each of said blades hingedly connected to said tail pipe, the improvement comprising:
- a. eyelet means attached to the inside surface of selected nozzle blades,
- b. actuation rod means circumscribing the inside periphery of said nozzle blades and passing through said eyelets;
- c. means for securing one end of said actuation rod means with the oppose free end thereof connected to motive means for applying a push or pull force to said actuation rod means whereby the diameter of said circumscribing actuation rod passing through said eyelets is caused to increase or decrease thereby causing said nozzle blades to rotate inwardly towards the nozzle centerline or outwardly from said nozzle center line thereby increasing or decreasing the exit end of said tail pipe accordingly.
In a jet propelled aircraft receiving its forward propelling thrust from the exit of high velocity gases from a rearwardly directed tail pipe, said tail pipe including a variable area exhaust nozzle affixed to the exit end thereof, said nozzle having a multiplicity of axially extending overlapping blades circumferentially spaced about the exit end of said tail pipe, each of said blades hingedly connected to said tail pipe, the improvement comprising:
- a. eyelet means attached to selected nozzle blades,
- b. a unitary, pliable actuation rod circumscribing the periphery of said nozzle blades and passing through said eyelets,
- c. means for securing one end of said actuation rod with the opposite free end thereof connected to motive means for applying a push or pull force to said actuation rod whereby the diameter of said circumscribing actuation rod is caused to increase or decrease thereby causing said nozzle blades to rotate inwardly towards the nozzle centerline or outwardly from said nozzle center line thereby increasing or decreasing the exit end of said tail pipe accordingly.
Dependencies are inferred from the claim text.