Fluid sprinkling – spraying – and diffusing – Reaction motor discharge nozzle – With means controlling amount – shape or direction of...
Patent
1977-03-17
1980-01-01
Love, John J.
Fluid sprinkling, spraying, and diffusing
Reaction motor discharge nozzle
With means controlling amount, shape or direction of...
92 33, 92 75, B64C 1506
Patent
active
041812603
ABSTRACT:
A polygonal hydraulic actuation ring is provided for modulating the area of a variable position nozzle. The actuation ring comprises a plurality of actuators arranged end to end in the form of a polygon circumscribing a plurality of pivotable flaps, each of which is acted upon directly by one of the actuators. The actuators are synchronized by the use of gears and helical screws to expand and contract in unison, thereby changing the diameter of the polygonal actuation ring and the exhaust flow path area defined by the flaps. Rod end and head end hydraulic fluid flows are provided to all actuators simultaneously through a system of internal flow passages, and only one rod end supply line and one head end supply line are required for the entire actuation ring. Cooling is provided by an air film flowing over each hydraulic cylinder and by hydraulic fluid recirculation. The sliding joint on each polygonal side is equipped with close fitting rollers arranged to handle moment loading which would result from unbalanced air loading of the flaps, thus protecting the piston rods and seals from damage due to moment loading. The actuation ring is readily adaptable to thrust vectorable nozzles.
REFERENCES:
patent: 2780056 (1957-02-01), Colley
patent: 2801516 (1957-08-01), Battle et al.
patent: 2926489 (1960-03-01), Halford et al.
patent: 3530769 (1970-09-01), Gurevich
patent: 3598319 (1971-08-01), Howald
patent: 3724759 (1973-04-01), Ellis
patent: 3767120 (1973-10-01), Harmon
patent: 3820720 (1974-06-01), Anders et al.
patent: 3954225 (1976-05-01), Camboulives et al.
"J79-17 Operation and Service Instruction (GEK-9210)", Dec. 15, 1966, pp. 5-1 through 5-11, General Electric Co.
General Electric Company
Lampe, Jr. Robert C.
Lawrence Derek P.
Love John J.
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