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- W103103669 abstract "An expression is derived to calculate the directivity of the far field sound pressure levels radiated from an annular duct based on Tyler and Sofrin's approach for a circular duet. Both radial and circumferential variations in the acoustic pressure field inside the duct are considered in the derivation. A computer programme to calculate the generation, propagation and far field radiation of tones from a single stage ducted fan is described. Some illustrative examples are worked out to show the effect of hub/tip ratio on the far field directivity. Computed results for the cases considered in Tyler and Sofrin 's paper are in close agreement." @default.
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- W103103669 date "1973-04-30" @default.
- W103103669 modified "2023-09-23" @default.
- W103103669 title "Far field radiation of rotor-stator interactions tones from an annular duct" @default.
- W103103669 hasPublicationYear "1973" @default.
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