An Investigation of the Detection of Charged Metal Particles in a Jet Engine Exhaust by a Cylindrical Electrostatic Probe.

Abstract

Charged particle detection by an electrostatic probe in a jet engine is studied from both a theoretical and an experimental approach. The charging mechanisms for a metal particle in a jet engine exhaust are presented and discussed. A theory for the waveshape expected for a charged metal particle moving perpendicular to a cylindrical electrostatic probe is developed. The theory is developed using an electronic circuit equivalent to the physical mechanisms in the jet engine. A laboratory burner is described which simulates the exhaust ion number density and lower thrust values of a jet engine. Experimental data are presented for the burner and for a scaled up system which uses a 0.44 cm diameter particle, a 7.6 cm diameter probe, and a 30 cm/sec velocity. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1972
Accession Number
AD0745540

Entities

People

  • Ray W. Burgess Jr

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Charged Particles
  • Circuits
  • Detection
  • Diameters
  • Electronic Circuits
  • Electrostatic Probes
  • Engines
  • Experimental Data
  • Jet Engine Exhaust
  • Jet Engines
  • Particles

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Plasma Physics.

Technology Areas

  • Microelectronics