稜角部への多孔板の適用によるパンタグラフ舟支え部の空力音低減効果に関する検討

抄録

Reduction in aerodynamic noise emitted from a pantograph is an important subject for reducing environmental impact of high-speed trains. In the previous study, aerodynamic noise reduction method of pantograph head support by applying perforated plates to ridge corners was proposed. In this study, relation between inner and outer shape of perforated plates and aerodynamic noise reduction effect is investigated. From a wind tunnel test result, it is clarified that setting appropriate inner and outer shape of perforated plates can reduce aerodynamic noise to the same extent as applying porous material.