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Proceedings Paper

Overview of the Space Shuttle acceleration environment
Author(s): Charles R. Baugher; Narayanan Ramachandran; Richard DeLombard
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Paper Abstract

The Space Shuttle acceleration environment is characterized. The acceleration environment is composed of a residual or quasi-steady component and higher frequency components induced by vehicle structural modes and the operation of onboard machinery. The orbiter structural modes in the 1 - 10 Hz range, are excited by oscillatory and transient disturbances and tend to dominate the energy spectrum of the acceleration environment. A comparison of the acceleration measurements from different space shuttle missions reveals the characteristic signature of the structural modes of the orbiter overlaid with mission specific hardware induced disturbances and their harmonics. Transient accelerations are usually attributed to crew activity and orbiter thruster operations. Crew work and exercise tends to raise the accelerations to the 10-3go(1 milli-g) level. The use of vibration isolation techniques (both active and passive systems) during crew exercise have shown to significantly reduce the acceleration magnitudes.

Paper Details

Date Published: 13 July 1994
PDF: 12 pages
Proc. SPIE 2220, Sensing, Imaging, and Vision for Control and Guidance of Aerospace Vehicles, (13 July 1994); doi: 10.1117/12.179597
Show Author Affiliations
Charles R. Baugher, NASA Marshall Space Flight Ctr. (United States)
Narayanan Ramachandran, Universities Space Research Association (United States)
Richard DeLombard, NASA Lewis Research Ctr. (United States)

Published in SPIE Proceedings Vol. 2220:
Sensing, Imaging, and Vision for Control and Guidance of Aerospace Vehicles
Jacques G. Verly; Sharon S. Welch, Editor(s)

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