Large spanwise variations in profile drag for airfoils at low Reynolds numbers

James J. Guglielmo, Michael S. Selig

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Wind-tunnel tests were performed to investigate the spanwise drag variation commonly found on airfoils at low Reynolds numbers. Detailed spanwise measurements were taken to quantify this three-dimensional effect. Wind-tunnel test data are presented for both the E374 and SD6060 airfoils at Reynolds numbers from 200,000 to 500,000. The results show the effect of Reynolds number and angle of attack on the magnitude of these spanwise variations. Moreover, the measurements depict periodic trends in the profile drag and a relationship between the airfoil upper surface contour, the formation of large spanwise structures thought to originate at the laminar separation bubble, and the formation of the downstream wake.

Original languageEnglish (US)
Title of host publication13th Applied Aerodynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages11
ISBN (Print)9781563471230
StatePublished - 1995
Event13th Applied Aerodynamics Conference, 1995 - San Diego, United States
Duration: Jun 19 1995Jun 22 1995

Publication series

Name13th Applied Aerodynamics Conference


Other13th Applied Aerodynamics Conference, 1995
Country/TerritoryUnited States
CitySan Diego

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering


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