NASA NTRS · 20030066006
ISS Payload Racks Automated Flow Control Calibration Method
Abstract
Payload 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. -
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Simmonds, Boris G.. 2003-01-01. ISS Payload Racks Automated Flow Control Calibration Method. https://ntrs.nasa.gov/citations/20030066006
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