Analytical Study of Mixed-Flow JT8D Exhaust Emissions Measurements for Fixed-Probe Requirements.

Abstract

A method is outlined to optimize the shape, size, and location of fixed probe for acquiring representative emission samples from the exhaust of a mixed-flow JT8D-11 turbofan engine. Families of geometric shapes and mutually exclusive probe configurations are overlaid upon a 177-point traverse grid. A significance ratio is calculated and used to rank results. Representative and nonrepresentative areas of the exhaust plume are defined. Probe configurations are overlaid upon the traverse grid and ranked to obtain a representative configuration. An area of the JT8D exhaust plume suitable for acquiring representative emission samples was found which reduces the overall 177 sample points to 20 sample points. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1976
Accession Number
ADA033121

Entities

People

  • Gerald R. Slusher

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Pollution
  • Aircraft Engines
  • Computer Programs
  • Cruciform Configurations
  • Databases
  • Emission
  • Engines
  • Exhaust Plumes
  • Gases
  • Governments
  • Measurement
  • New Jersey
  • Plastic Explosives
  • Turbines
  • Turbofan Engines
  • United States
  • United States Government

Readers

  • Aerodynamics.
  • Internal Combustion Engine (ICE) Technology.
  • Systems Analysis and Design