Scale and Turbulence Effects on the Lift and Drag Characteristics of the NACA 65 sub 3 -418, a=1.0 Airfoil Section

Abstract

Wind-tunnel tests, investigating low drag wing performance in small-scale tests, showed a large increase in minimum drag coefficient, and a decrease of maximum lift coefficient occurred with decreasing Reynolds Number above certain designated values. The lift-curve slope varied up to 6% between high and low turbulence levels. Low Reynolds Number test data are unreliable for low drag airfoils either to estimate full-scale characteristics or to determine merits of airfoils for higher Reynolds numbers.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1944
Accession Number
ADA800600

Entities

People

  • John H. Quinn Jr.
  • Warren A. Tucker

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Aeronautics
  • Airfoils
  • Aluminum Alloys
  • Barometric Pressure
  • Coefficients
  • Drag
  • Leading Edges
  • Low Drag
  • Low Drag Airfoils
  • Mach Number
  • Reynolds Number
  • Skin Friction
  • Turbulence
  • Two Dimensional
  • Wind Tunnel Tests
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.