Calibration system for air metering bellmouths

Measuring and testing – Instrument proving or calibrating – Volume of flow – speed of flow – volume rate of flow – or mass...

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G01F 2500

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active

052592340

ABSTRACT:
The present invention provides a system, including apparatus and method, using a National Bureau of Standards (NBS) traceable laser velocimeter for in situ calibration of a traversing static pressure probe used to determine a velocity distribution in an air metering bellmouth for testing aircraft gas turbine engines. The invention is particularly useful for large fan-jet engines may be used to calibrate rake mounted probes capable of wall-to-wall stream static pressure survey measurements.

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"Aircraft Engine Inlet Airflow Measurement", B.S.M.E. University of Cincinnati, 1983, by Mina Dimov.
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"Practical Application of LV Systems To Aero Engine Research And Development", Aircraft Engine Group, by D. C. Wisler and P. W. Mossey, 1977.

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