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- W1577779872 abstract "A computer program is presented for the determination of the thickness noise of helicopter rotors. The results were obtained in the form of an acoutic pressure time history. The parameters of the program are the rotor geometry and the helicopter motion descriptors, and the formulation employed is valid in the near and far fields. The blade planform must be rectangular, but the helicopter motion is arbitrary; the observer position is fixed with respect to the ground with a maximum elevation of 45 deg above or below the rotor plane. With these restrictions, the program can also be used for the calculation of thickness noise of propellers." @default.
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- W1577779872 date "1976-01-01" @default.
- W1577779872 modified "2023-09-27" @default.
- W1577779872 title "A computer program for the determination of the acoustic pressure signature of helicopter rotors due to blade thickness" @default.
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