Determination of Vortex Paths by Series Expansion Technique with Application to Cruciform Wings

Abstract

A series method of determining two-dimensional vortex paths is considered and applied to the computation of vortex positions behind a slender equal-span cruciform wing at any angle of bank as a function of the distance behind the trailing edge. Calculated paths are shown for four bank angles. For a bank angle of 45 deg comparison is made with the results of a closed expression given in NACA TN 2605. For other bank angles water-tank experiments provide qualitative comparison. Satisfactory agreement is found for a sufficient distance downstream to include most practical missile-tail positions. The interference forces on an equal-span interdigitated cruciform tail behind a slender equal-span cruciform wing are calculated for four angles of bank from the vortex positions found by use of the series.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1956
Accession Number
ADA377341

Entities

People

  • Alberta Y. Alksne

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamic Configurations
  • Aeronautical Laboratories
  • Agreements
  • Aspect Ratio
  • Boundaries
  • Cartesian Coordinates
  • Coefficients
  • Computations
  • Coordinate Systems
  • Cruciform Wings
  • Equations
  • Free Stream
  • Slender Bodies
  • Three Dimensional
  • Trailing Edges
  • Two Dimensional
  • Water Tanks

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.
  • Riverine Ecology