50-kHz-rate 2D imaging of temperature and H2O concentration at the exhaust plane of a J85 engine using hyperspectral tomography

Lin Ma, Xuesong Li, Scott T. Sanders, Andrew W. Caswell, Sukesh Roy, David H. Plemmons, James R. Gord

Research output: Contribution to journalArticlepeer-review

151 Scopus citations

Abstract

This paper describes a novel laser diagnostic and its demonstration in a practical aero-propulsion engine (General Electric J85). The diagnostic technique, named hyperspectral tomography (HT), enables simultaneous 2-dimensional (2D) imaging of temperature and water-vapor concentration at 225 spatial grid points with a temporal response up to 50 kHz. To our knowledge, this is the first time that such sensing capabilities have been reported. This paper introduces the principles of the HT techniques, reports its operation and application in a J85 engine, and discusses its perspective for the study of high-speed reactive flows.

Original languageEnglish (US)
Pages (from-to)1152-1162
Number of pages11
JournalOptics Express
Volume21
Issue number1
DOIs
StatePublished - Jan 14 2013

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