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An Experimental Study on Flapping Motion of Forward Flight Condition used to Articulated Hub Rotor

관절형 허브 로터를 이용한 전진비행조건에서의 플래핑 운동에 대한 실험적 연구

  • Ryi, Jae-Ha (Department of Aerospace Engineering, Chungnam National University) ;
  • Back, Dong-Min (STX Shipbuilding CO., LTD.) ;
  • Rhee, Wook (DAEWOO Shipbuilding and Marine Engineering CO., LTD.) ;
  • Choi, Jong-Soo (Department of Aerospace Engineering, Chungnam National University) ;
  • Song, Keun Woong (Rotor Team, Korea Aerospace Research Institute)
  • Received : 2012.12.26
  • Accepted : 2013.03.27
  • Published : 2013.04.01

Abstract

In this paper, wind tunnel test and analytical prediction are compared for result of flapping motion in helicopter forward flight condition. Tests were performed at low speed wind tunnel at Chungnam National University, test section of wind tunnel has 1.8 by 1.8 meter open-jet test section area. According to the results of measured data for aerodynamic performance of model rotor in forward flight. It has to observed the difference of analytical and measured results of power coefficient for fixed thrust coefficient. And calculated and measured data of helicopter rotor flapping angles in forward flight are compared for a model rotor in a wind tunnel. A test was conducted to verify the measured data of coning and lateral/longitudinal flapping angle with predicted values.

본 논문에서는 헬리콥터 전진비행 조건에서 플래핑모션에 대하여 축소 로터 실험을 통하여 실험결과와 이론적인 예측결과를 비교하였다. 축소로터 성능 실험은 충남대학교 아음속 풍동에서 수행하였으며 1.8 x 1.8m의 개방형 시험부를 사용하였다. 전진비행조건에서의 실험 결과에 의하면 축소로터의 전진비행조건에서의 추력 결과를 고정한 조건에서 동력계수는 차이가 있는 것을 확인 할 수 있었다. 또한, 공력 성능 측정 결과와 이론적인 예측결과의 비교를 통하여 헬리콥터의 플랩핑 각도의 범위에 대하여 비교하여 보았다. Coning 각도, 횡방향과 종방향에 대한 플래핑 각도에 대해서는 실험결과와 예측결과의 유사함을 확인하였다.

Keywords

References

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