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METHOD AND SYSTEM FOR MONITORING VIBRATORY PHENOMENA OCCURRING IN AN AIRCRAFT'S GAS TURBINE ENGINE IN OPERATION
METHOD AND SYSTEM FOR MONITORING VIBRATORY PHENOMENA OCCURRING IN AN AIRCRAFT'S GAS TURBINE ENGINE IN OPERATION
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机译:飞机燃气轮机运行中振动现象监测的方法和系统
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摘要
A method of monitoring vibratory phenomena that occur in an aviation gas turbine engine in operation includes establishing a frequency spectrum of a vibratory signal representative of the operating state of the engine and of its components; using a plurality of vibratory signatures, each corresponding to a vibratory phenomenon that occurs during operation of aeroengines of the same type as the engine being monitored and originating from a defect in or an abnormal operation of a component of the engines; identifying, in the spectrum, the points of curves that match mathematical functions, each defining a vibratory signature; and for each identified curve corresponding to a defect of engine components, analyzing the amplitude associated with the points of the curve relative to predefined amplitude values corresponding to a degree of severity of the defect; and as a result of an amplitude value being exceeded or an abnormal operation being detected, issuing a message associated with the vibratory signature.
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