Wind-Tunnel Investigation of Control-Surface Characteristics. 17 - Beveled-Trailing-Edge Flaps of 0.20, and 0.40 Airfoil Chord on an NACA 0009 Airfoil

Abstract

Force tests were made in two-dimensional flow to determine the aerodynamic characteristics of flaps having chords 20, 30, and 40% of the airfoils and 20 degrees, 30 degrees, and 40 degrees beveled trailing edges. Tests were made at a dynamic pressure of 11.25 and 15 psf. Results indicate that, with a smooth leading edge, the increased trailing-edge angle on the flaps with sealed gaps decreased the slopes of the control-fixed lift curve and the lift effectiveness.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1944
Accession Number
ADA801161

Entities

People

  • Vernard E. Lockwood

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeronautical Laboratories
  • Aeronautics
  • Coefficients
  • Control Surfaces
  • Deflection
  • Dynamic Pressure
  • Leading Edges
  • Measurement
  • Reynolds Number
  • Rubber Seals
  • Surfaces
  • Trailing Edges
  • Two Dimensional
  • Two Dimensional Flow
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.