Application of the Ring Vortex Method to Aerodynamic Design of Lifting Rotor Systems

Abstract

The operation of the lifting rotor during flight with a horizontal velocity component has been the subject of considerable study. The ring vortex method is a simplified procedure for accurately determining the aerodynamic characteristics of the lifting rotor. The replacement of the vortex cylinder with a system of discrete vortex rings is equivalent to expansion of the vortex cylinder into rings and longitudinal vortices. Ignoring the longitudinal vortices is equivalent to ignoring the closure of the stream behind the rotor. For low loaded lifting rotors, no significant error is thus created.

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Document Details

Document Type
Technical Report
Publication Date
Nov 10, 1971
Accession Number
AD0735018

Entities

People

  • V. I. Shaidakov

Organizations

  • United States Army Foreign Science and Technology Center

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Aerodynamic Characteristics
  • Aerodynamic Lift
  • Air Flow
  • Aircraft Design
  • Aircrafts
  • Autorotation
  • Classification
  • Equations
  • Flow
  • Flow Rate
  • Helicopters
  • Momentum
  • Rotation
  • Security
  • Solenoids
  • Translations

Fields of Study

  • Engineering
  • Physics

Readers

  • Fluid Dynamics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).