Effect of Rotor Meridional Velocity Ratio on Response to Inlet Radial and Circumferential Distortion

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National Aeronautics and Space Administration, 1979 - 69 pages
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Three single transonic fan stages, each having a different meridional velocity ratio across its rotor, were tested with two magnitudes of tip radial distortion and with a 90 deg circumferential distortion imposed on the inlet flow. The rotor with the lowest meridional velocity ratio (less than 0.9 at the tip) demonstrated the least degradation of performance due to these distortions. Loss and deviation angle data (as needed for performance prediction with radial distortion) calculated along actual streamlines for radially distorted flow and correlated against diffusion factor, showed consistent agreement with data calculated along design streamlines for undistorted flow.

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Contents

SUMMARY
1
SUMMARY OF RESULTS
17
REFERENCES
25

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