Wind-Tunnel Investigation of a Rectangular NACA 2212 Airfoil with Semi-span Ailerons and with Nonperforated, Balanced Double Split Flaps For Use as Aerodynamic Brakes

Abstract

Flat-plate flaps with no wing cutouts and flaps having Clark Y sections with corresponding cutouts made in wing were tested for various flap deflections, chordwise locations, and gaps between flaps and airfoil contour. The drag was slightly lower for wing with airfoil section flaps. Satisfactory aileron effectiveness was obtained with flap gap of 20% wing chord and flap-nose location of 80% wing chord behind leading edge. Airflow was smooth and buffeting negligible.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1945
Accession Number
ADA800626

Entities

People

  • Margaret F. Ivey
  • Thomas A. Toll

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeronautical Laboratories
  • Aeronautics
  • Air Flow
  • Aircrafts
  • Airfoils
  • Buffeting
  • Coefficients
  • Control Surfaces
  • Deflection
  • Dynamic Pressure
  • Flow
  • Fluid Dynamics
  • Leading Edges
  • Split Flaps
  • Surfaces
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.