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Measurement of the Profile Drag of Compressor and Turbine Cascades and the Effect of Wakes in Exciting Vibration

Published online by Cambridge University Press:  28 July 2016

J. M. Stephenson
J. M. Stephenson*
Affiliation:
Division of Engineering, Brown University, U.S.A.
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Extract

The Melvill Jones equation for the profile drag of a single aerofoil is adapted to the case of an aerofoil in cascade, where the static pressure may be permanently raised (compressor), or lowered (turbine). A simplified procedure for measuring the drag is then described, assuming that the total pressure wake has the form of an error curve. A table of multiplying factors is given, for compressible flow up to an outlet Mach number of 0·9. Many published measurements of cascade drag have ignored this factor, with a consequent error of up to 25 per cent.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 57 , Issue 515 , November 1953 , pp. 722 - 725
Copyright
Copyright © Royal Aeronautical Society 1953

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References

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