A technique to map the wake behind passenger cars with different rear end configurations has been developed in the full-scale automotive wind tunnel "Pininfarina". It is based on the measurement of total pressure in the wake, using a probe which is driven by a large traversing gear. Results are presented as coloured isopressure maps. Tests have been carried out on a 1:2.5 scale car model with two different front ends and eight different rear ends. The attainable body configurations are likely to cover the majority of passenger car shapes. Wake surveys have been conducted at several distances behind each car model in order to see the wake development. The paper shows and analyzes the results obtained for these sixteen car model configurations; it also emphasizes what kind of information can be obtained by this wake survey technique.

  • Availability:
  • Supplemental Notes:
    • Presented at the SAE International Congress and Exposition Detroit, Michigan, February 27-March 2, 1984.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Cogotti, A
  • Publication Date: 1984

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00399065
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 840299, HS-038 586
  • Files: HSL, USDOT
  • Created Date: Aug 31 1985 12:00AM