Preliminary Aerodynamic and Structural Tests Showing the Effect of Compressive Load on the Fairness of a Low-Drag Wing Specimen with Chordwise Hat-Section Stiffeners

Abstract

A study was made of an NACA 86(215)-(1.25) 18 airfoil specimen of two-spar construction with hat-section chordwise siffeners. Aerodynamic tests consisted of drag measurements made in the two-dimensional low-turbulence pressure tunnel by the wake-survey method. The model was then tested by alternately applying and removing progressively large compressive loads until some permanent deformation was noted in the skin. Drag tests were made in the after-loading condition. The results indicated that the drag characteristics of a wing employing this type of structure would probably not be changed after the wing had been subjected to its maximum applied flight load.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1943
Accession Number
ADB807134

Entities

People

  • Carl. A. Rossman
  • John C. Houbolt
  • Milton Davidson
  • Norman Rafel

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Aeronautics
  • Aircrafts
  • Airfoils
  • Construction
  • Determinants (Mathematics)
  • Flight Loads
  • Low Drag
  • Low Drag Airfoils
  • Measurement
  • Mechanical Properties
  • Mechanics
  • Reynolds Number
  • Stresses
  • Surface Properties
  • Test Methods
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Structural Dynamics.