Calibration of sonic valves for the laminar flow control, leading-edge flight test

Calibration of sonic valves for the laminar flow control, leading-edge flight test

Sonic needle valves were calibrated to measure and control airflow in the suction system for the leading-edge flight test. The procedure and results for the calibration flow test of 4:41 flight valves are given. Mass-flow rates, which ranged from 0.001 to 0.012 lbm/sec, and maximum back pressure wer...

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Hauptverfasser: Petley, D. H., Alexander, W., Jr, Wright, A. S., Jr, Vallas, M.
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Aerodynamics
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Alexander, W., Jr
Wright, A. S., Jr
Vallas, M.
description Sonic needle valves were calibrated to measure and control airflow in the suction system for the leading-edge flight test. The procedure and results for the calibration flow test of 4:41 flight valves are given. Mass-flow rates, which ranged from 0.001 to 0.012 lbm/sec, and maximum back pressure were measured for total temperatures from -30 F to 75 F and total pressures from 120 to 540 psf. Correlating equations are obtained for mass-flow rate as a function of total pressure, total temperature, and valve opening length. The most important aspect of flow measurement and control is found to be the measurement of valve opening length.
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S., Jr ; Vallas, M.</creatorcontrib><description>Sonic needle valves were calibrated to measure and control airflow in the suction system for the leading-edge flight test. The procedure and results for the calibration flow test of 4:41 flight valves are given. Mass-flow rates, which ranged from 0.001 to 0.012 lbm/sec, and maximum back pressure were measured for total temperatures from -30 F to 75 F and total pressures from 120 to 540 psf. Correlating equations are obtained for mass-flow rate as a function of total pressure, total temperature, and valve opening length. 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S., Jr ; Vallas, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-nasa_ntrs_198500153963</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1985</creationdate><topic>Aerodynamics</topic><toplevel>online_resources</toplevel><creatorcontrib>Petley, D. H.</creatorcontrib><creatorcontrib>Alexander, W., Jr</creatorcontrib><creatorcontrib>Wright, A. S., Jr</creatorcontrib><creatorcontrib>Vallas, M.</creatorcontrib><collection>NASA Scientific and Technical Information</collection><collection>NASA Technical Reports Server</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Petley, D. H.</au><au>Alexander, W., Jr</au><au>Wright, A. 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title Calibration of sonic valves for the laminar flow control, leading-edge flight test
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