Guillaume Osmond, Fabien Ayme, Nicolas Lastere

DOI Number: N/A

Conference number: IFASD-2019-114

A Ground Vibration Test (GVT) is a mandatory certification test for all new aircraft series supporting Loads & Aeroelastics model validation and first flight clearance. In recent years, a lot of efforts were provided to optimize the standard GVT procedure. Further reduction in the test’s cost and lead time was only possible by introducing alternative testing procedure like the Dynamic Ground Test (DGT) method. The aircraft becomes its own test mean. The test principle lies on the use of the flight control surfaces to perform excitations of the aircraft while the flight test instrumentation records the resulting vibrations. The DGT method was industrialized for the first time on the A350-1000 and it turned out to be a full success. The test duration could be limited to 2 working days, the total cost was significantly reduced and vibration levels needed for proper dynamic identification were sometimes even higher than by using external shakers. All requested test results for certification were provided in time and quality.

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In Categories: Aeroelastic Analysis Frameworks, Ground Vibration Testing, IFASD 2019
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