초록 ▼

A method controls the stroke of three circumferentially spaced apart actuators attached at respective joints to an actuation ring positionable to vector thrust in a gas turbine engine exhaust nozzle. The circumferential angular location of each of the actuator joints is specified. And, the stroke fo

A method controls the stroke of three circumferentially spaced apart actuators attached at respective joints to an actuation ring positionable to vector thrust in a gas turbine engine exhaust nozzle. The circumferential angular location of each of the actuator joints is specified. And, the stroke for each of the actuators is independently calculated using the joint locations in response to pitch and yaw commands. The actuators are then operated to effect the respective strokes therefor to position the nozzle. In a preferred embodiment, the angular locations are specified once, and trigonometric functions thereof are calculated and stored in memory. The stored values may then be used subsequently in calculating stroke as the pitch and yaw commands change.

대표청구항 ▼

[Accordingly, what is desired to be secured by Letters Patent of the United States is the invention as defined and differentiated in the following claims:] [1.]specifying circumferential angular location of each of said actuator joints;independently calculating stroke for each of said actuators usin

[Accordingly, what is desired to be secured by Letters Patent of the United States is the invention as defined and differentiated in the following claims:] [1.]specifying circumferential angular location of each of said actuator joints;independently calculating stroke for each of said actuators using said joint locations in response to pitch and yaw commands; andoperating said actuators to effect said respective strokes therefor to position said nozzle.