ANALYSIS OF COAST-DOWN DATA TO ASSESS AERODYNAMIC DRAG REDUCTION ON FULL-SCALE TRACTOR-TRAILER TRUCKS IN WINDY ENVIRONMENTS

A data reduction procedure is presented and successfully used to analyze coastdown data obtained in a windy environment to provide a measure of the aerodynamic drag on a full-scale tractor-trailer combination as a function of the yaw angle of the vehicle. Comparison with wind tunnel measurements suggests that the wind-tunnel provides a reasonable simulation of the effects of winds on vehicle drag. The highest drag reductions that were measured in the presence of winds were obtained with a streamlined fairing/gap seal combination. /GMRL/

  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Buckley Jr, F T
    • Marks, C H
    • Walston Jr, W H
  • Publication Date: 1976-11

Media Info

  • Pagination: 15 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00152306
  • Record Type: Publication
  • Report/Paper Numbers: SAE 760850
  • Files: TRIS
  • Created Date: Jun 17 1977 12:00AM