Method and apparatus for in-flight shake testing of an aircraft

Details Method and apparatus for in-flight shake testing of an aircraft Method and apparatus for in-flight shake testing of an aircraft

1993-06-01

1995-02-21

Williams, Hebron E.

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

244 1711, 364508, G01H 100

Patent

active

053905431

ABSTRACT:
A force-generating actuator connected at or across points of a structure capable of relative motion at an exciting frequency is operated to input a predetermined load into the structure and the response of the structure is measured for analysis. In one form of the invention the actuator is one of a plurality of actuators of an active vibration control system which is isolated and operated independently in a shake test mode. Advantageously, especially in a helicopter application, the remaining actuators can continue to be operated to reduce background vibration.

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patent: 5219143 (1993-06-01), Staple et al.

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