COMPARISONS OF EFFECTIVENESS OF COMMERCIALLY AVAILABLE DEVICES FOR THE REDUCTION OF AERODYNAMIC DRAG ON TRACTOR-TRAILERS

Wind tunnel experiments, with emphasis on cross-wind effects, have been used to evaluate the effectiveness of a number of commercially available devices for reducing the aerodynamic drag of a tractor-trailer combination. The evaluations included consideration of the effects of tractor type, trailer height, and the bluffness of the tractors and/or trailers. A wind-averaged drag coefficient was introduced to interpret the basic data for the prediction of average drag in a highway environment. The average drag of the baseline vehicles was found to be a strong function of the bluffness of the tractor and/or trailer, and a weak function of the tractor type. Estimates of the average fuel savings that would result from the application of the various drag reducing devices ranged from -400 to 3300 gallons per 100,000 miles, depending on the combination of tractor, trailer and device that is used. /GMRL/

  • Supplemental Notes:
    • Presented at a meeting held August 11-14, 1975.
  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Buckley Jr, F T
    • Sekscienski, W S
  • Publication Date: 1975-8

Media Info

  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00130774
  • Record Type: Publication
  • Report/Paper Numbers: SAE #750704
  • Files: TRIS
  • Created Date: Apr 21 1976 12:00AM