UV Absorption Measurements of Nitric Oxide Compared to Probe Sampling Data for Measurements in a Turbine Engine Exhaust at Simulated Altitude Conditions

Abstract

Nitric oxide measurements were conducted in the exhaust of a turbofan engine at simulated altitude conditions in a ground-level test cell using both optical nonintrusive and conventional gas sampling techniques. NO-UV absorption measurements, using both resonance and continuum lamps, were made through several chords of the exhaust flow near the nozzle exit plane as a part of a larger effort to characterize aircraft exhaust constituents over a wide range of steady-state engine operating conditions. This paper describes the NO-UV absorption measurements and compares radial profiles of NO concentrations and emission indices with measurements obtained using conventional gas sampling and tunable diode laser infrared absorption.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1997
Accession Number
ADA345730

Entities

People

  • R. P. Howard

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Data Analysis
  • Elements
  • Engineering
  • Exhaust Gases
  • Gas Turbines
  • Gases
  • Instrumentation
  • Jet Engines
  • Laser Diodes
  • Resonance Absorption
  • Sea Level
  • Spectra
  • Steady State
  • Test Facilities
  • Turbines
  • Turbofan Engines

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers