THE EFFECT OF BLADE-TIP SHAPE ON ROTOR AEROACOUSTIC   NOISE BY EULER/KIRCHHOFF METHOD

SONG Wen-ping; HAN Zhong-hua; WANG Li-qun; YANG Ai-ming; QIAO Zhi-de

SONG Wen-ping, HAN Zhong-hua, WANG Li-qun, YANG Ai-ming, QIAO Zhi-de. THE EFFECT OF BLADE-TIP SHAPE ON ROTOR AEROACOUSTIC NOISE BY EULER/KIRCHHOFF METHOD[J]. Chinese Journal of Computational Physics, 2001, 18(6): 569-572.

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THE EFFECT OF BLADE-TIP SHAPE ON ROTOR AEROACOUSTIC NOISE BY EULER/KIRCHHOFF METHOD

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Abstract

The Euler/Kirchhoff method is adopted to calculate the far field noise of UH-1H rotor,and the calculated results are compared with the measured data.The effect of rotor blade tip shape on high speed rotor noise is investigated.The results show that,with the decreasing of airfoil thickness near the blade tip or the increasing of the taper ratio near the blade tip and the sweep of the blade tip, the high speed rotor noise can be reduced to some extent.

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THE EFFECT OF BLADE-TIP SHAPE ON ROTOR AEROACOUSTIC NOISE BY EULER/KIRCHHOFF METHOD

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