Reducing aerodynamic noise emitted from a pantograph head and its support, which are the pantographs’ dominant aerodynamic noise sources, is among the key environmental challenges facing the further acceleration of high-speed trains. This paper shows three aerodynamic noise reduction strategies applicable to actual trains: applying multi-segmented smooth-profile pantograph head, shape improvement of the pantograph head support, and covering of the pantograph head support with a layer of porous material. Wind tunnel tests confirmed that aerodynamic noise can be reduced by 2.7 dB compared to pantographs in current use by applying these strategies.
Reduction of Aerodynamic Noise Emitted from Pantograph by Applying Multi-Segmented Smooth Profile Pantograph Head and Low Noise Pantograph Head Support
Lect.Notes Mechanical Engineering
International Workshop on Railway Noise ; 2022 ; Shanghai, China December 07, 2022 - December 09, 2022
Noise and Vibration Mitigation for Rail Transportation Systems ; Chapter : 19 ; 209-217
2024-02-24
9 pages
Article/Chapter (Book)
Electronic Resource
English
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