Accession Number : ADA290940

Title :   Measurements of Ions Formed in Jet Engine Exhaust Plumes,

Corporate Author : GEORGIA TECH RESEARCH INST ATLANTA ELECTRO-OPTICS ENVIRONMENT AND MATERIALS L AB

Personal Author(s) : Eisele, F. L.

PDF Url : ADA290940

Report Date : 23 JUN 1994

Pagination or Media Count : 20

Abstract : An atmospheric pressure chemical ionization mass spectrometer was modified to measure either ion or neutral effluents from a jet engine. The instrument was set up behind an F-15 aircraft at Eglin Air Force Base and measured the ions formed in both the positive and negative spectrum. Since the ion concentrations in the jet plume were quite small and measurement times relatively short, most of the measurements performed were of ions artificially produced in the exhaust using a corona ion source. The most obvious change in the ion spectrum after the jet engines were started was the dramatic increase in what appeared to be sulfuric acid. The spectra resulting from these measurements are shown and discussed. (jg)

Descriptors :   *IONS, *EXHAUST PLUMES, *JET ENGINE EXHAUST, FIGHTER AIRCRAFT, MEASUREMENT, NEUTRAL, JET ENGINES, SPECTRA, CHEMICAL REACTIONS, IONIZATION, AIR FORCE FACILITIES, MASS SPECTROMETERS, EFFLUENTS, JET FLOW, SULFURIC ACID, ELECTRICAL CORONA, ION DENSITY, ION SOURCES.

Subject Categories : Combustion and Ignition
      Physical Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE