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|Author(s):||Iosif I. Shinder; Michael R. Moldover; J. 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:||Click here to retrieve PDF version of paper (1MB)|