Real-time diagnostics of a jet engine exhaust using an intra-pulse quantum cascade laser spectrometer

G. Duxbury, K. G. Hay, N. Langford, M. P. Johnson, J. D. Black

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

It has been demonstrated that an intra-pulse scanned quantum cascade laser spectrometer may be used to obtain real-time diagnostics of the amounts of carbon monoxide, carbon dioxide, and water, in the exhaust of an aero gas turbine (turbojet) engine operated in a sea level test cell. Measurements have been made of the rapid changes in composition following ignition, the composition under steady state operating conditions, and the composition changes across the exhaust plume. The minimum detection limit for CO in a double pass through a typical gas turbine plume of 50 cm in diameter, with 0.4 seconds integration time, is approximately 2 ppm.
Original languageEnglish
Pages (from-to)2131-2142
Number of pages12
JournalMolecular Physics
Volume109
Issue number17-18
Early online date6 Sep 2011
DOIs
Publication statusPublished - 2011

Keywords

  • molecular spectroscopic database
  • gases
  • emissions
  • aircraft engines

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