This paper reviews the problems of using null-yaw and fixed-direction, multi-hole probes for aerodynamic measurements. The preparation of calibration charts for the use of fixed-direction three-hole probes in two-dimensional flow regimes and for the use of their five-hole counterparts in three-dimensional flow systems is described. Some of the sources of error in the use of these types of probes are also discussed.
In an Appendix, numerical examples demonstrating the use of the calibration charts are discussed.
A novel type of probe, fitted with a rotating sting is described. This probe is being developed to combine the advantages of null-yaw and fixed-direction probes.
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References
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Gas Turbine Laboratory. Aerodynamic measurements1953 (Mass. Inst. Technol.).
2.
JegorowG.‘Measurement of direction, velocity, and pressure in three-dimensional current’, R.T.P. Trans. No. 2498 issued by the Ministry of Aircraft Production (translated by Airscrew Co. Ltd); Luftfahrtforschung, 19 (Nos 9, 20, 10-42), 326.
