Wind-Tunnel Investigation of Control-Surface Characteristics. 12 - Various Cover-Plate Alinements on the NACA 0015 Airfoil with a 30-Percent-Chord Flap and Large Sealed Internal Balance

Abstract

Force-test measurements in two-dimensional flow were made to determine the aerodynamic effects of changing the cover-plate alinements on the NACA 0015 airfoil with 30 percent chord flap and large sealed internal balance. The results indicated that manufacturing imperfections in the alinement of the cover plates with the airfoil contour, if large, may have serious effects on resultant hinge moment of a flap with a sealed internal balance. Bending the cover plates in or out has practically no effect on the slope of the lift curve for the airfoil.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1943
Accession Number
ADB816060

Entities

People

  • H. P. Hoggard Jr.

Organizations

  • Langley Research Center

Tags

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeronautical Laboratories
  • Air Flow
  • Airfoils
  • Coefficients
  • Control Surfaces
  • Deflection
  • Drag
  • Dynamic Pressure
  • Flow
  • Horizontal Stabilizers
  • Measurement
  • Rubber Seals
  • Surfaces
  • Trailing Edges
  • Two Dimensional
  • Two Dimensional Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.