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- W1968781525 abstract "A semi-empirical model for predicting the noise generated by jets exhausting from circular nozzles is presented and compared with small-scale static and simulated-flight data. The present method is an updated version of that part of the original NASA Aircraft Noise Prediction Program (1974) relating to circular jet noise. The earlier method has been shown to agree reasonably well with experimental static and flight data for jet velocities up to ∼ 520 m/s. The poorer agreement at higher jet velocities appeared to be due primarily to the manner in which supersonic convection effects were formulated. The purely empirical supersonic convection formulation is replaced in the present method by one based on theoretical considerations. Other improvements of an empirical nature have been included based on model-jet/free-jet simulated-flight tests. The effects of nozzle size, jet velocity, jet temperature, and flight are included." @default.
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- W1968781525 date "1980-04-01" @default.
- W1968781525 modified "2023-10-01" @default.
- W1968781525 title "An improved prediction method for the noise generated in flight by circular jets" @default.
- W1968781525 doi "https://doi.org/10.1121/1.2018248" @default.
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