Overview of the Space Shuttle acceleration environment

Charles R. Baugher; Narayanan Ramachandran; Richard DeLombard

doi:10.1117/12.179597

13 July 1994 Overview of the Space Shuttle acceleration environment

Charles R. Baugher, Narayanan Ramachandran, Richard DeLombard

Proceedings Volume 2220, Sensing, Imaging, and Vision for Control and Guidance of Aerospace Vehicles; (1994) https://doi.org/10.1117/12.179597
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

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^-3g_o(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.

Citation Download Citation

Charles R. Baugher, Narayanan Ramachandran, and Richard DeLombard "Overview of the Space Shuttle acceleration environment", Proc. SPIE 2220, Sensing, Imaging, and Vision for Control and Guidance of Aerospace Vehicles, (13 July 1994); https://doi.org/10.1117/12.179597

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