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747 Shuttle Carrier Aircraft/Space Shuttle Orbiter Mated Ground Vibration Test: Data Via Transient Excitation and Fast Fourier Transform Analysis
Document Number: 770970
Date Published: February 1977
Author(s):
N. L. Olsen - Boeing Co.
M. J. Walter - Boeing Co.
Abstract:
The experimental procedure employed to define the natural modes of vibration of the 747 Shuttle Carrier Aircraft and Space Shuttle Orbiter mated configuration is described. A discussion of test results and comparison to structural analysis results is also included. Random transient signals were used as inputs to electromagnetic shakers to provide excitation to the mated vehicle test configuration. Acceleration signals were processed via the Fast Fourier Transform algorithm. Magnitude and phase transfer functions were formed and processed to produce modal frequencies, damping, and modal displacements.
Product Status: In Stock
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