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http://dx.doi.org/10.5139/JKSAS.2018.46.5.376

Aerodynamic Noise Analysis Using the Permeable Surface for UH-1H Rotor Blade in Hovering Flight Condition  

Kim, Ki Ro (Department of Aerospace Information Engineering, Konkuk University)
Park, Min Jun (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
Park, Soo Hyung (Rotary-wing Aircraft Research & Development Division, Korea Aerospace Industries)
Lee, Duck Joo (Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology)
Park, Nam Eun (Rotary-wing Aircraft Research & Development Division, Korea Aerospace Industries)
Im, Dong Kyun (Rotary-wing Aircraft Research & Development Division, Korea Aerospace Industries)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.46, no.5, 2018 , pp. 376-384 More about this Journal
Abstract
The aerodynamic far-field noise was computed by an acoustic analogy code using the permeable surface for the UH-1H rotor blade in hover. The permeable surface surrounding the blade was constructed to include the thickness noise, the loading noise, and the flow noise generated from the shock waves and the tip vortices. The computation was performed with compressible three-dimensional Euler's equations and Navier-Stokes equations. The high speed impulsive noise was predicted and validated according to the permeable surface locations. It is confirmed that the noise source caused by shock waves generated on the blade surface is a dominant factor in the far-field noise prediction.
Keywords
Aerodynamic Noise; Acoustic Analogy; Permeable Surface; Overset Grid; High Speed Impulsive Noise;
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Times Cited By KSCI : 2  (Citation Analysis)
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