Effect of Air Injection on the Torque Produced by a Trailing Vortex

Abstract

When an axial jet of air is introduced near the starting point of a vortex in a wind tunnel, a marked change is noted downstream in both the tangential and axial velocity profiles. These effects suggest that modifying a vortex might produce a less severe hazard to an encountering aircraft. While this is encouraging, there has been heretofore no direct experimental evidence that a vortex wake which has been modified by a jet is actually less hazardous at a given point than one which is unmodified. The results of an experiment are described in this paper involving the value of a jet in modifying a vortex wake hazard.

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Document Details

Document Type
Technical Report
Publication Date
Jun 05, 1972
Accession Number
AD0763544

Entities

People

  • Richard S. Snedeker

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Axial Flow
  • Coefficients
  • Far Field
  • Flow
  • Fluid Dynamics
  • Fluid Mechanics
  • Jet Aircraft
  • Jet Flow
  • Measurement
  • Near Field
  • Scientific Research
  • Trailing Vortices
  • Vortex Generators
  • Vortices
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design