NEW INFORMATION ON RESISTANCE TO FORWARD MOTION AT VERY HIGH SPEED (RESEARCH WITH THE TGV.001)

Within the scope of SNCF studies, research and experiment for planning new very high speed lines, an important programme is included concerning the resistance to forward motion of fast trainsets; the results have enabled an approach to be made to the determination of performance and energy consumption. The author, who is an Ingenieur Principal Hors Classe at the SNCF Rolling Stock Department, explains the different stages of the programme with the TGV 001: discovered the components of aerodynamic drag; then by experiments with models in the long wind tunnel at St-Cyr, determined the aerodynamic efforts of trains comprising 2 to 10 vehicles; finally, compared the results of various series of measurements taken with a full-size train, with those obtained with models and deduce from them the drag of operational trainsets by employing geometrical dimensions. These very instructive results have shown in particular that the effects are much more appreciable on the train when standing than when on the move, that the shape of the front of the train is all important when entering a tunnel, and that the TGV 001 creates pressure which is about 1/3rd that recorded on commercial trains running at the same speed.

  • Corporate Authors:

    Societe Nationale des Chemins de Fer Francais

    92 rue Bonaparte
    75 Paris 6e,   France 
  • Authors:
    • Bernard, M
  • Publication Date: 1974-10

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00097246
  • Record Type: Publication
  • Source Agency: British Railways
  • Files: TRIS
  • Created Date: Jul 29 1975 12:00AM