Turbine pyrometer system for correction of combustor fireball in

Details Turbine pyrometer system for correction of combustor fireball in Turbine pyrometer system for correction of combustor fireball in

1992-08-04

1993-11-23

Teska, Kevin J.

Boots, shoes, and leggings

356 45, 374127, 374144, G06F 1520, G01J 560

Patent

active

052650367

ABSTRACT:
A pyrometer system for use in measuring the temperature of components in an operating jet engine corrects for random interference in the pyrometer temperature signal caused by radiation from the combustor flame. An optical beam from a periodically moving target engine component such as a turbine blade is provided to a detector module which splits the beam into two beams, one of which has a spectral width less than that of the target beam. Temperature signals are generated by a multiple spectral area pyrometer which are provided to a signal processor for correction. The signal processor compares present target temperature signal values sampled at selected phases during the target period with corresponding ones taken in an earlier period. Previous signals are averaged or replaced with current values if these meet criteria involving one or two temperature signals, noise band and magnitude.

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