title: Aircraft engine-mounted camera system for long wavelength infrared imaging of in-service thermal barrier coated turbine blades.
abstract: This paper announces the implementation of a long wavelength infrared camera to obtain high-speed thermal images of an aircraft engine's in-service thermal barrier coated turbine blades. Long wavelength thermal images were captured of first-stage blades. The achieved temporal and spatial resolutions allowed for the identification of cooling-hole locations. The software and synchronization components of the system allowed for the selection of any blade on the turbine wheel, with tuning capability to image from leading edge to trailing edge. Its first application delivered calibrated thermal images as a function of turbine rotational speed at both steady state conditions and during engine transients. In advance of presenting these data for the purpose of understanding engine operation, this paper focuses on the components of the system, verification of high-speed synchronized operation, and the integration of the system with the commercial jet engine test bed.
authors.affiliation: Advanced Fuel Research, Inc., 87 Church Street, East Hartford, Connecticut 06108, USA.
authors.forename: James
authors.initials: J
authors.lastname: Markham
authors.affiliation: Advanced Fuel Research, Inc., 87 Church Street, East Hartford, Connecticut 06108, USA.
authors.forename: Joseph
authors.initials: J
authors.lastname: Cosgrove
authors.affiliation: New York Institute of Technology, Northern Blvd, Old Westbury, New York 11568, USA.
authors.forename: James
authors.initials: J
authors.lastname: Scire
authors.affiliation: Pratt & Whitney, 400 Main Street, East Hartford, Connecticut 06108, USA.
authors.forename: Charles
authors.initials: C
authors.lastname: Haldeman
authors.affiliation: Pratt & Whitney, 400 Main Street, East Hartford, Connecticut 06108, USA.
authors.forename: Ian
authors.initials: I
authors.lastname: Agoos