Wind-Tunnel Investigations of the Effects of Surface-Covering Distortion on the Characteristics of a Flap Having Undistorted Contour Maintained for Various Distances Ahead of the Trailing Edge

Abstract

Wind-tunnel investigation showed that the effects of distortion of a flap on lift characteristics are small compared with effects of the distortion on hinge-moment characteristics. Approximately 75 percent of effects of distortion on stick force can be eliminated if distortion of rear 20 percent of flap chord is prevented by stiffening that part of flap. Variation in Mach number from 0.20 to 0.40 had only small effect on hinge-moment characteristics of undistorted flap or of distorted flaps having undistorted contour maintained over rear 20 percent of flap chord.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1947
Accession Number
ADB806049

Entities

People

  • Jack D. Brewer
  • M. J. Queijo
  • Thomas A. Toll

Organizations

  • National Advisory Committee for Aeronautics

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautics
  • Aircrafts
  • Airfoils
  • Aspect Ratio
  • Boundary Layer
  • Control Surfaces
  • Coverings
  • Dynamic Pressure
  • Horizontal Stabilizers
  • Layers
  • Leading Edges
  • Mach Number
  • Plastic Explosives
  • Reynolds Number
  • Surfaces
  • Trailing Edges
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Computer Programming and Software Development.