In this report three problems of random vibration are discussed. In each case the external excitation is a turbulent flow. The first two problems, an airplane flying into atmospheric turbulence and a panel-like structure exposed to boundary-layer pressure fluctuation, are treated as linear problems. It is shown that if Taylor's hypothesis ofna frozen turbulence field is valid then the calculation can be greatly simplified using a spectral analysis in the wave-number domain. However, if decay in the turbulence is appreciable a superposition scheme can still be used to retain as much computational advantage of the wave-number domain analysis as possible.
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