Aerodynamic control of high-speed train

Susumu Masunaga, Hideo Watanabe, Yasuaki Kohama

Research output: Contribution to journalArticlepeer-review


Speeding up of a high-speed train has been tryed by means of reducing its weight, streamlining its shape, and decreasing its frontal project area. But the reduction of weight decreases the adhesion force of driving wheels to rails. So, too much reduction in weight causes slipping of the driving wheels, and the maximum speed of the train is limitted to some extent. In this research we try to use the aerodynamic down-force, which is utilized widely for a racing car, to compensate the decrease in the frictional force between the driving wheels and the ground surface caused by reducing the car weight. Wind tunnel test with using a head-coach model is performed. The wind tunnel is provided with a moving-belt equipment. The down force is created in the space between the bottom surfaces of bogies and the moving belt, and is controlled by changing the shapes of the bottom surface of bogies. Lift and drag of the model, as well as velocity distributions under the model, are measured.

Original languageEnglish
Pages (from-to)969-976
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number656
Publication statusPublished - 2001 Apr
Externally publishedYes


  • Bogie
  • Down force
  • Drag
  • Head coach configurating
  • High speed train
  • Wind tunnel test

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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