Wind-Tunnel Investigation of Control-Surface Characteristics. 20 - Plain and Balance Flaps on an NACA 0009 Rectangular Semi-span Tail Surface

Abstract

Correlation is established between aerodynamic characteristics of control surfaces in two-dimensional and three-dimensional flow. Slope of lift curve was affected little by overhang and balance-nose shape, but increased by sealing flap-nose gap. Effectiveness of balanacing tab was same for sealed plain flap and unsealed overhang flap. Changes in hinge-moment coefficient were diminished by sealing gap. Values measured by three-dimensional flow disagreed with two-dimensional flow values until aspect ratio corrections were made.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1944
Accession Number
ADA800610

Entities

People

  • I. E. Garner

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Advanced Electronics
  • Cyber

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeronautical Laboratories
  • Aeronautics
  • Aspect Ratio
  • Coefficients
  • Control Surfaces
  • Dynamic Pressure
  • Intellectual Property
  • Mechanical Properties
  • Network Protocols
  • Reynolds Number
  • Surfaces
  • Three Dimensional
  • Three Dimensional Flow
  • Two Dimensional
  • Two Dimensional Flow
  • Wind Tunnels

Readers

  • Aerodynamics/Aeronautics.