Aeroelastic Characteristics of a Circulation Control Wing

Abstract

Static aeroelasticity is examined for a wing with circulation control (CC) airfoils. The airfoils use tangential blowing over a rounded trailing edge to provide a lift augmentation proportional to the jet momentum of the blown air. Airfoil lift and pitching moment magnitudes are dependent on both angle of attack and jet momentum. In combination with an elastic structure, this double dependence of lift and moment lead to a CC reversal condition, which is analogous to aileron reversal. Increases in jet momentum beyond the reversal point result in lift decreases. Boundaries for torsional divergence and CC reversal are theoretically examined for the simple two-dimensional case and then for a three-dimensional wing. The wing analysis uses a modified lifting line theory and two-dimensional CC airfoil data to evaluate the behavior of a circulation control wing (CCW).

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1976
Accession Number
ADA033328

Entities

People

  • David W Taylor
  • Joseph B. Wilkerson

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aeroelasticity
  • Aircrafts
  • Boundary Layer
  • Computer Programming
  • Computer Programs
  • Computers
  • Differential Equations
  • Dynamic Pressure
  • Elastic Properties
  • Equations
  • Geometry
  • High Lift
  • Momentum
  • Resonant Frequency
  • Three Dimensional
  • Two Dimensional
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.