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ISS Payload Racks Automated Flow Control Calibration MethodPayload Racks utilize MTL and/or LTL station water for cooling of payloads and avionics. Flow control range from valves of fully closed, to up to 300 Ibmhr. Instrument accuracies are as high as f 7.5 Ibm/hr for flow sensors and f 3 Ibm/hr for valve controller, for a total system accuracy of f 10.5 Ibm/hr. Improved methodology was developed, tested and proven that reduces accuracy of the commanded flows to less than f 1 Ibmhr. Uethodology could be packed in a "calibration kit" for on- orbit flow sensor checkout and recalibration, extending the rack operations before return to earth. -
Document ID
20030066006
Document Type
Preprint (Draft being sent to journal)
Authors
Simmonds, Boris G.
(Boeing Co. Huntsville, AL, United States)
Date Acquired
August 21, 2013
Publication Date
January 1, 2003
Subject Category
Spacecraft Instrumentation And Astrionics
Report/Patent Number
SAE-03ICES-235
Meeting Information
33rd International Conference on Environmental Systems(Vancouver, British Columbia)
Funding Number(s)
CONTRACT_GRANT: NAS8-50000
Distribution Limits
Public
Copyright
Public Use Permitted.
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