Space Shuttle contamination measurements from flights STS-1 through STS-4Results of contamination measurements performed on the initial four flights of the Space Shuttle Orbiter are summarized and compared with requirements contained in the Space Shuttle Flight and Ground System Specifications and those formulated by the Contamination Requirements Definition Group. In general, the results of measurements carried out with the induced environment contamination monitor indicate that molecular fluxes, deposition rates, and average counts of particulates are within the requirements and close to predicted values. Among the exceptions, were such special circumstances as water dumps, payload bay door closures, and RCS engine, APU, and flash evaporator operations which led to molecular and particulate contamination levels exceeding the limits. In cases where these circumstances would interfere with sensitive payload operations, careful mission planning to preclude a contamination source by operational limitation should be done to avoid losses.
Document ID
19830035442
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ehlers, H. K. F. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Jacobs, S. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Leger, L. J. (NASA Johnson Space Center Houston, TX, United States)
Miller, E. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1983
Subject Category
Space Transportation
Report/Patent Number
AIAA PAPER 83-0331
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting