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STS-40 orbital acceleration research experiment flight results during a typical sleep periodThe Orbital Acceleration Research Experiment (OARE), an electrostatic accelerometer package with complete on-orbit calibration capabilities was flown aboard Shuttle on STS-40. The instrument is designed to measure and record the Shuttle aerodynamic acceleration environment from the free molecule flow regime through the rarefied flow transition into the hypersonic continuum regime. Because of its sensitivity, the OARE instrument detects aerodynamic behavior of the Shuttle while in low-earth orbit. A 2-h orbital time period on day seven of the mission, when the crew was asleep and other spacecraft activities were at a minimum, was examined. Examination of the model with the flight data shows the instrument to be sensitive to all major expected low-frequency acceleration phenomena; however, some erratic instrument bias behavior persists in two axes. In these axes, the OARE data can be made to match a comprehensive atmospheric-aerodynamic model by making bias adjustments and slight liner corrections for drift.
Document ID
19920066005
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Blanchard, Robert C.
(NASA Langley Research Center Hampton, VA, United States)
Nicholson, John Y.
(Vigyan, Inc. Hampton, VA, United States)
Ritter, James R.
(Lockheed Engineering and Sciences Co. Hampton, VA, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1992
Publication Information
Publication: Microgravity Science and Technology
Volume: 5
Issue: 2, Ju
ISSN: 0938-0108
Subject Category
Spacecraft Instrumentation
Accession Number
92A48629
Distribution Limits
Public
Copyright
Other

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