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    Fuel Line Based Acoustic Flame-Out Detection System (1997)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: An acoustic flame-out detection system that renders a large high pressure combustor safe in the event of a flame-out and possible explosive reignition. A dynamic pressure transducer is placed in the fuel and detects the stabilizing fuel pressure oscillations, caused by the combustion process. An electric circuit converts the signal from the combustion vortices, and transmitted to the fuel flow to a series of pulses. A missing pulse detector counts the pulses and continuously resets itself. If three consecutive pulses are missing, the circuit closes the fuel valve. With fuel denied the combustor is shut down or restarted under controlled conditions.
    Keywords: Instrumentation and Photography
    Format: application/pdf
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