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Vibration Analysis of the Space Shuttle External Tank Cable Tray Flight Data with and without PAL RampExternal Tank Cable Tray vibration data for three successive Space Shuttle flights were analyzed to assess response to buffet and the effect of removal of the Protuberance Air Loads (PAL) ramp. Waveform integration, spectral analysis, cross-correlation analysis and wavelet analysis were employed to estimate vibration modes and temporal development of vibration motion from a sparse array of accelerometers and an on-board system that acquired 16 channels of data for approximately the first two minutes of each flight. The flight data indicated that PAL ramp removal had minimal effect on the fluctuating loads on the cable tray. The measured vibration frequencies and modes agreed well with predicted structural response.
Document ID
20080013143
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Authors
Walker, B. E.
Panda, B. E.
(Ohio Aerospace Inst. Brook Park, OH, United States)
Sutliff, D. L.
Date Acquired
August 24, 2013
Publication Date
January 1, 2008
Subject Category
Space Transportation And Safety
Report/Patent Number
AIAA Paper 2008-0312
Funding Number(s)
CONTRACT_GRANT: NNC07ZA08A
Distribution Limits
Public
Copyright
Other

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