Comparison of Pitching Moments Produced by Plain Flaps and Spoilers and Some Aerodynamic Characteristics of an NACA 23012 Airfoil with Various Types of Aileron

Abstract

Sectional characteristics of airfoil having retractable slotted flap with plain, slot-lip, or retractable ailerons are presented for a large range of aileron deflections. The analysis indicated that pitching moments produced by spoilers were less positive than those produced by plain flaps of equal effectiveness, also that pitching moments created by the spoiler increased less with the Mach number than similar moments produced by plain flaps. Positive values of pitching moment decreased as devices were located nearer airfoil leading edge.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1945
Accession Number
ADA800606

Entities

People

  • Elizabeth E. Mckinney
  • Paul E. Purser

Organizations

  • Langley Research Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aerodynamic Control Surfaces
  • Aircrafts
  • Airfoils
  • Airframes
  • Control Surfaces
  • Deflection
  • Flaps (Control Surfaces)
  • Mach Number
  • Mechanical Properties
  • Slotted Flaps
  • Spoilers
  • Surfaces
  • Trailing Edges
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.