Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty

Published

June 20, 2012

Author(s)

Iosif I. Shinder, Michael R. Moldover, J. M. Hall, Mike Duncan, Joe Keck

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 Title

8th International Symposium on Fluid Flow Measurement

Conference Dates

June 18-22, 2012

Conference Location

Colorado Springs, CO

Pub Type

Conferences

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Keywords

laser doppler calibration, spinning disk calibration, primary standard

Citation

Shinder, I. , Moldover, M. , Hall, J. , Duncan, M. and Keck, J. (2012), Airspeed Calibration Services: Laser Doppler Anemometer Calibration and Its Uncertainty, 8th International Symposium on Fluid Flow Measurement , Colorado Springs, CO, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=911456 (Accessed October 9, 2025)