Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2014.10a
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- Pages.904-910
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- 2014
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- 1598-2548(pISSN)
Development of the Helicopter Noise Prediction Code and its Applications
헬리콥터 소음 예측 코드 개발 및 적용사례
Abstract
The Helicopter noise analysis code was developed using Farassat's Formular 1A based on Ffowcs-Williams and Hawkings equation and Lowson's Formula which contains single loading noise source concept. HART-II(Higher harmonic control Aeroacoustic Rotor Test), STAR(Smart-Twisting Active Rotor) and Active-tab Rotor were computed and analyzed by using developed noise code. The results of these rotor noise prediction are explained and its applicability would be mentioned in this paper.
Keywords
- Helicopter Noise Analysis Code;
- Ffowcs-William Hawkings equation;
- Farassat's Formular;
- Lowson's Formular;
- HART-II(Higher harmonic control Aeroacoustics Rotor Test);
- STAR(Smart-Twisting Active Rotor);
- Active-tab Rotor