Accession Number:

AD0745540

Title:

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

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1972-06-01

Pagination or Media Count:

88.0

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 cmsec velocity. Author

Subject Categories:

  • Combustion and Ignition
  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE