Optical sensing of combustion dynamics

Details Optical sensing of combustion dynamics Optical sensing of combustion dynamics

1994-11-15

1996-08-13

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39281, 60725, F02C 928

Patent

active

055444784

ABSTRACT:
An optical radiation detector, such as a silicon carbide photodiode ultraviolet radiation detector, is employed for real time, noninvasive monitoring and diagnosis of combustion dynamics in gas turbine engines. The SiC photodiode responds to flame ultraviolet emission, and a Fast Fourier Transform spectrum analyzer peak acoustic frequency components of the detector signal as indicators of systematic gas pressure vibrations related to combustion. The combustion may be modified in accordance with the monitored acoustic frequency components.

REFERENCES:
patent: 4735052 (1988-04-01), Maeda et al.
patent: 5049063 (1991-09-01), Kishida et al.
patent: 5093576 (1992-03-01), Edmond et al.
patent: 5257496 (1993-11-01), Brown et al.

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