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Publication Citation: Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty

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Author(s): Iosif I. Shinder; Michael R. Moldover; James M. Hall; Mike Duncan; Joe Keck;
Title: Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty
Published: June 20, 2012
Abstract: The National Institute of Standards and Technology (NIST) and the Oak Ridge National Laboratory (ORNL) are improving their airspeed calibration services. Both laboratories use spinning disks to generate linear velocities that are traceable to NIST‰s length and time standards. We compared their spinning disks using NIST‰s laser Doppler anemometer (LDA) as a transfer standard. At 10 m/s, the disks differed by (0.11 ± 0.26) %, where the uncertainty is two standard deviations. We discuss the techniques used to calibrate LDAs with spinning disks and their uncertainties.
Proceedings: 8th International Symposium on Fluid Flow Measurement
Location: Colorado Springs, CO
Dates: June 18-22, 2012
Keywords: laser doppler calibration; spinning disk calibration; primary standard
Research Areas: Measurement Standards, Flow, Calibrations, Standards, Manufacturing, Metrology
PDF version: PDF Document Click here to retrieve PDF version of paper (1MB)