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이영빈(Yeong-Bin Lee),곽민호(Min-Ho Kwak),김규홍(Kyu-Hong Kim),이동호(Dong-Ho Lee),정형석(Hyoung-Seong Jeong),장영일(Young-Il Jang),권혁빈(Heyok-Bin Kwon) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
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.