AN EVALUATION OF THE AERODYNAMIC DRAG REDUCTIONS PRODUCED BY VARIOUS CAB ROOF FAIRINGS AND A GAP SEAL ON TRACTOR-TRAILER TRUCKS

A study has been carried out to determine the reduction in the aerodynamic drag of tractor-trailer trucks brought about by fairings mounted on the cab roof and a vertical seal mounted across the gap between the tractor and the trailer. This study was conducted using one-eighth-scale models in a wind tunnel at a Reynolds number of about 25 percent of that of full scale trucks at 50 mph. Reductions of up to 35 percent of the zero-yaw drag coefficient, and of over 25 percent of the wind-averaged drag coefficient were obtained. /GMRL/

  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Marks, C H
    • Buckley Jr, F T
    • Walston Jr, W H
  • Publication Date: 1976-2

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00145230
  • Record Type: Publication
  • Report/Paper Numbers: SAE 760105
  • Files: TRIS
  • Created Date: May 31 1977 12:00AM