Proceedings of the KSR Conference (한국철도학회:학술대회논문집)

The Korean Society for Railway (한국철도학회)
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Experimental Studies on Improvement of Aerodynamic Performance of Pantograph System for HEMU-400X

HEMU-400X 팬터그래프 시스템의 공력성능 개선을 위한 실험적 연구

  • 이영빈 (서울대학교, 기계항공공학부) ;
  • 곽민호 (서울대학교, 기계항공공학부) ;
  • 김규홍 (서울대학교, 기계항공공학부/항공우주신기술연구소) ;
  • 이동호 (서울대학교, 기계항공공학부/항공우주신기술연구소) ;
  • 정형석 (공군사관학교, 아음속풍동실험실) ;
  • 장영일 (공군사관학교, 아음속풍동실험실) ;
  • 권혁빈 (한국철도기술연구원, 초고속열차연구실)
  • Published : 2011.05.26
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Abstract

In this study, wind tunnel test were conducted to improve an aerodynamic performance of HEMU400X pantograph system with 4 types of pantograph housing models. Experimental models were 1/4 scaled pantograph system, 1/4 scaled ground plate which is scaled down to real roof shape of HEMU-400x, and 4 types of pantograph housing models. The free stream of wind tunnel were 20, 40, 60, 70m/s. The lift and drag forces were measured with 2-axis load cell. And, Total pressure were measured with rake in the wake region of panhead. In addition, Surface flow visualization by tufts were performed to know flow characteristics around pantograph housing. According to the results of force tests and surface visualizations, pantograph housing shape is important part because the shape affects to pantograph system. Therefore, it is considered that adaption of pantograph housing is more advantageous to decrease drag and acoustic noise.

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