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Effective Perceived Noise Level Prediction for a Propeller driven UAV by using Wind Tunnel Test Data

풍동실험결과를 이용한 프로펠러 무인 항공기의 환경인증소음 예측에 관한 연구

  • Ryi, Jae-Ha (Department of Aerospace Engineering, Chungnam National University) ;
  • Rhee, Wook (DAEWOO Shipbuilding and Marine Engineering CO., LTD.) ;
  • Choi, Jong-Soo (Department of Aerospace Engineering, Chungnam National University)
  • Received : 2012.07.10
  • Accepted : 2012.12.28
  • Published : 2013.01.01

Abstract

This paper discussed a procedure for noise certification of Aircraft and predicting the full scale over-flight noise of propeller from acoustic wind tunnel measurement of small scale propeller. Noise Certification Procedures is established from International Civil Aviation Organization(ICAO). The data manipulations are then discussed in extrapolation to simulation flight distance and flight simulation. One of the most important point of flight simulation is adjustments for differences between wind tunnel test conditions and flight test conditions. To simulated the noise level estimation procedure for noise data post-process, simulate procedures from data of the wind tunnel noise measurement and the flight noise measurement by using a 7kg degree UAV. This study confirmed an effectively noise estimation procedures by wind tunnel noise test and flight noise test.

본 논문에서는 풍동 실험을 통해 취득한 소음측정 결과에서 실제 비행에 기체에서 발생되는 소음을 예측하는 과정에 대하여 다루었으며 정지된 소음원을 비행하는 것과 같은 상태로 시뮬레이션 할 수 있는 방법에 대하여 소개하고 실험을 통하여 검증하였다. 또한 국제민간항공기구(이하 ICAO)에서 규정한 절차에 따라 틸트로터 항공기 및 무인항공기의 환경소음을 평가할 수 있는 방안을 제시하였다. 제시한 평가 방안을 검증하기 위해서 풍동실험과 비행시험에 대한 소음실험 시뮬레이션 프로그램을 구성하였으며 7kg급 무인항공기를 통한 풍동 실험 및 비행 실험을 수행하였으며 풍동 실험 결과로부터 비행 상태의 소음예측이 가능하다는 것을 확인 할 수 있었다.

Keywords

References

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