Application of the Equivalent Mechanical Flap Concept to Jet Flapped Wing-Body Combinations

Abstract

The analysis of powered lifting systems of the jet flap type requires an accounting of the mutual aerodynamic interference between the airframe (hard boundary) and the jet efflux (soft boundary). The development of a very generalized analysis technique is hardly feasible. However, the Externally Blown Flap (EBF), Upper Surface Blowing (USB), Internally Blown Flap (IBF), and the Augmentor wing (AW) consititue a family of powered lifting systems which are reducible to a common overall aerodynamic concept, but which differ primarily in their mechanical implementation and secondarily in aerodynamic detail. This report presents a relatively simple technique based on careful application of linearized theory. The method applies to the analogous systems mentioned above. The comparison of theoretical results with experimental data shows that the method is sufficiently accurate to be very useful in practice.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1974
Accession Number
ADA000431

Entities

People

  • A. E. Holmes
  • Lane Barnett
  • Willi F. Jacobs

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aircrafts
  • Computer Programs
  • Computers
  • Equations
  • Far Field
  • Flaps (Control Surfaces)
  • Geometric Forms
  • Geometry
  • High Lift
  • Jet Flaps
  • Leading Edge Flaps
  • Leading Edges
  • Lines (Geometry)
  • Load Distribution
  • Swept Wings
  • Two Dimensional

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Engineering
  • Systems Analysis and Design