초록 ▼

A method and apparatus for use with an aircraft autopilot to prevent an aircraft part from striking the ground during near ground maneuvers by employing a protection circuit between the outer loop and the inner loop of the control chain between the autopilot and the control surface, the prevention c

A method and apparatus for use with an aircraft autopilot to prevent an aircraft part from striking the ground during near ground maneuvers by employing a protection circuit between the outer loop and the inner loop of the control chain between the autopilot and the control surface, the prevention circuit producing an output signal when there is a possibility of ground strike which output signal operates to reduce the control surface command signal from the inner loop to the control surface and thus be rapidly responsive to aircraft attitude changes that could produce ground strike.

대표청구항 ▼

[ I claim:] [1.] Ground strike prevention apparatus for use with an aircraft having a control surface, an autopilot operable to produce command signals through an outer loop and an inner loop operable to receive command signals and produce control signals for positioning the control surface, the app

[ I claim:] [1.] Ground strike prevention apparatus for use with an aircraft having a control surface, an autopilot operable to produce command signals through an outer loop and an inner loop operable to receive command signals and produce control signals for positioning the control surface, the apparatus comprising:ground strike protection apparatus connected to receive unmodified command signals generated in response to an output of the outer loop, the ground strike protection apparatus being operable to modify the unmodified command signals to produce ground strike protection signals when the unmodified command signals could cause a ground strike; andmeans connecting the ground strike protection apparatus to the inner loop to thereby provide the ground strike protection signals to the inner loop so that control signals normally generated by the inner loop are modified by the ground strike protection signals in a manner to prevent ground strike.