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Publication Citation: IMPROVEMENTS TO NIST'S AIR SPEED CALIBRATION SERVICE

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Author(s): Iosif I. Shinder; Christopher J. Crowley; Bernard J. Filla; Michael R. Moldover;
Title: IMPROVEMENTS TO NIST'S AIR SPEED CALIBRATION SERVICE
Published: September 24, 2013
Abstract: We discuss five significant improvements to the Air Speed Calibration Service conducted by the National Institute of Standards and Technology (NIST): 1. Reduced-uncertainty calibrations of the secondary standard [Laser Doppler Anemometer, (LDA)] using a spinning disk, 2. Reduced-uncertainty LDA measurements that account for the position-dependence of the air speed in the test volume and for window effects on the LDA, 3. Improved repeatability, precision, and ease of calibrations by using automated data acquisition and PID air speed control, 4. Optical Character Recognition data acquisition system for anemometers lacking electrical outputs 5. Up-to-date uncertainty budget Also, we present the results (with uncertainties) of Pitot tube calibrations.
Conference: Flowmeko 2013
Proceedings: Proceedings of the 16th International Flow Measurements Conference
Location: Paris, -1
Dates: September 24-26, 2013
Keywords: airspeed calibration; primary standard; spinning disk; Wind tunnel
Research Areas: Measurement Standards, Flow, Calibrations, Standards
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