ON THE AZIMUTHAL STRUCTURE OF INSTALLED JET NOISE

Авторы: Faranosov G., Kopiev V., Belyaev I., Bychkov O., Chernyshev S.
Сборник: 23RD AIAA/CEAS AEROACOUSTICS CONFERENCE, 2017
Год издания: 2017
DOI: 10.2514/6.2017-3527
Аннотация: The work is devoted to the experimental study of the jet installation noise by means of the azimuthal decomposition technique (ADT). Jet-wing interaction noise might become an important problem for modern and novel passenger aircrafts with high and ultra-high bypass turbofan engines. Elaboration of installation noise reduction techniques and development of theoretical and numerical models for this type of noise will benefit from additional information on the noise source physics. Azimuthal modal content of the acoustic field provides such additional information and allows identification of certain peculiarities of installation effect. The azimuthal mode amplitudes and directivities for jet-wing interaction noise are measured and analyzed. Theoretical model capturing the main properties of the installation noise azimuthal components is proposed.
Добавил в систему: Бычков Олег Павлович

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