21st Congress of International Council of the Aeronautical Sciences, Melbourne, Australia, 13-18 September, 1998
Paper ICAS-98-4.5.1

DYNAMIC LOAD DEVELOPMENT AND RESULTS FOR DYNAMIC EXCITATION OF A FULL-SCALE F/A-18 FATIGUE TEST ARTICLE

Conser D. P., Mouser C., Waldman W.
Aeronautical and Maritime Research Lab., Australia

Keywords: dynamic load development, dynamic excitation, full-scale f/a-18, fatigue test

A unique technique has been developed to apply flight representative buffet dynamic loads to a full-scale F/A-18 fatigue test article while simultaneously applying manoeuvre loads. The simultaneous application of dynamic and manoeuvre loading is required to simulate the fatigue critical in-flight loading experienced during high angle of attack flying. Buffet dynamic loads are applied using a multi-channel, high force, high displacement electromagnetic shaker and control system. The approaches used to develop and apply the dynamic loading spectrum are discussed, with focus given to the development of the target flight-derived test article dynamic response and their comparison to test results.

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