Integral Model of Noise of an Engine-Propeller Power Plant

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A semiempirical model is proposed for estimation of the noise levels produced by aircraft piston power plants in the far acoustic field, which takes account of the main sources of noise. The acoustic field is considered as a superposition of fields formed by the radiations from a propeller and a piston engine. For calculation estimation of the levels of tonal noise of the propeller, it is proposed that a semiempirical method developed by the authors earlier be used. To determine the levels of vortex propeller noise which is presumably dominant in the broad-band noise of tractor propellers, it is proposed that one analytical model of trailing-edge noise be used. An empirical model of noise is proposed for calculation of the acoustic characteristics of a piston engine. Good agreement is shown between calculated and experimental data on the noise of power plants with tractor propellers. The data have been derived in acoustic testing of light aircraft of the An-2, Yak-18T, MAI-223M, and F30 type under static conditions at the aviabase of the Moscow Aviation Institute. Lines of further research are formulated for improvement of this procedure and expansion of the field of its application.

Keywords

propeller noise of a propeller noise of a piston engine noise of a power plant aeroacoustics noise of an aircraft noise of an unmanned flying vehicle 

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.JSC “Sukhoi Civil Aircraft” (AO “GSS”)MoscowRussia
  2. 2.Federal State Unitary Enterprise “N. E. Zhukovskii Central Aerohydrodynamic Institute”ZhukovskiiRussia

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