Electrical Charging of a Cylinder by a Seeded Vortex

Abstract

It is a well established fact that aircraft, especially helicopters, become electrically charged in particular conditions of flight, such as in the case of flying or hovering near particulate matter. The trailing vortices shed by each rotor tip, in the case of a helicopter, flow downward in a helical path and bathe the surface of the helicopter with the fluid field associated with the vortex. The purpose of this research work was to measure the electrical charging rate of a cylindrical body bathed by the trailing vortex shed by a different airfoil 'seeded' with charged particulate in a subsonic wind tunnel.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1972
Accession Number
AD0755282

Entities

People

  • H. R. Velkoff
  • Philip B. Bohl

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Air Supplies
  • Alkenes
  • Boundary Layer
  • Charged Particles
  • Dielectric Permittivity
  • Dielectric Properties
  • Electric Fields
  • Electricity
  • Electromagnetic Fields
  • Electronic Equipment
  • Fluid Dynamics
  • Fluid Mechanics
  • Measurement
  • Test And Evaluation
  • Test Equipment
  • Wind Tunnels
  • Wiring Diagrams

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Aerospace Engineering
  • Fluid Mechanics and Fluid Dynamics.