747 Shuttle Carrier Aircraft/Space Shuttle Orbiter Mated Ground Vibration Test: Data via Transient Excitation and Fast Fourier Transform Analysis
Date Published: 1977-02-01
Paper Number:770970
DOI: 10.4271/770970
Citation:
Olsen, N. and Walter, M., "747 Shuttle Carrier Aircraft/Space Shuttle Orbiter Mated Ground Vibration Test: Data via Transient Excitation and Fast Fourier Transform Analysis," SAE Technical Paper 770970, 1977, doi:10.4271/770970.
Author(s):
N. L. Olsen - The Boeing Co.
M. J. Walter - The Boeing Co.
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.
File Size: 556K
Product Status: In Stock
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