本研究では，平滑化舟体を搭載したうえで，舟体·舟 支え部の最適な相対位置関係を選定し，更なる空力音低 減を実現することを目的として，風洞試験における流れ 場測定および空力音測定の両面から検討を行った。その 結果，以下のことがわかった。%Reduction of aerodynamic noise emitted from a pantograph head and its support is one of the important subjects for the speed-up of high speed trains from an environmental point of view. To reduce it, suitable configuration of the pantograph head with a smooth cross section pronle has been investigated. As a result, it has been clarified that aerodynamic noise can be reduced by making the pantograph head have a suitable configuration which induces appropriate flow interference between the pantograph head and its support. Furthermore, it has been also clarified that the pantograph horn affects aerodynamic noise properties significantly and shape improvement around the joint area of the pantograph head and the horn is an important factor for the reduction of aerodynamic noise.
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