Aircraft Ground Vibration Testing

In this video, you will learn what a Ground Vibration Testing is and how it is used in aircraft design and certification.

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One of the most important steps in performing flutter analysis is GVT. GVT stands for Ground Vibration Test. It is a test that is performed with the aircraft on the ground, by shaking the airframe with shakers, impact hammers, or other devices and measuring the response of the airframe with accelerometers or measuring displacement. This is done with the purpose of finding the elastic and inertial characteristics of the airframe. So that we can tune and better model and analytical or numerical model of the aircraft that is used for flutter analysis. GVT is required my aircraft certification requirements and it is one of the most important preliminary steps before performing flutter analysis, and eventually flight flutter tests.