Aero-engine air parking real-time monitoring method
An aero-engine and air parking technology, which is applied in the direction of engine components, charging system, fuel control of turbine/propulsion device, etc., can solve the problems of long detection time, large speed drop, unfavorable pilot emergency operation, etc., and achieve short failure Effect of detection time, small rotational speed drop, accurate and fast fault detection performance
Pending Publication Date: 2022-03-08
XI AN JIAOTONG UNIV
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Problems solved by technology
At present, the air-stop failure monitoring commonly used for various types of engines in China mainly judges whether an air-stop failure occurs based on the compressor speed being lower than the idle speed. There are problems such as long detection time and large speed drop, which is not conducive to restarting and emergency response for pilots. operation, prone to catastrophic accidents
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[0037] The following will refer to the attached Figure 1 to Figure 3 Specific examples of the present invention are described in more detail. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0038] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout ...
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The invention discloses a real-time monitoring method for air parking of an aero-engine, and the method comprises the steps: monitoring the rotating speed of a fan, the rotating speed of a gas compressor and the temperature behind a turbine of the aero-engine in real time, converting the main fuel flow, and taking the rotating speed, the rotating speed and the turbine temperature as air parking fault characterization parameters; when the deviation between the speed of the slow vehicle and the speed of the air compressor exceeds a first allowable value and the number of times of exceeding the first allowable value reaches a first maximum allowable number of times, the L0 logic unit outputs' 1 'and judges that the aero-engine is stopped in the air, otherwise, the L0 logic unit outputs' 0 'and activates the L1 logic unit, the L1 logic unit comprises monitoring logic of the L1 logic unit, and when the L1 logic unit outputs' 1 ', the L0 logic unit outputs' 0 '; and the logic unit L2 and the logic unit L3 are activated to start running, the logic unit L2 and the logic unit L3 output '1', and it is judged that air parking of the aero-engine occurs.
Description
technical field [0001] The invention belongs to the technical field of air parking monitoring of aero-engines, in particular to a real-time monitoring method for air parking of aero-engines. Background technique [0002] Aviation engine parking in the air is a sudden failure of the engine in the air, which is a serious threat that directly affects the safety of aircraft operation, and even causes a crash accident. The causes of aero-engine parking in the air are relatively complex, mainly including engine failure, external interference, and pilot misoperation. In order to cope with the sudden in-flight failure, the current research hotspots mainly focus on the prevention of engine in-flight shutdown and the verification test of engine in-flight restart. [0003] Effective prevention of engine parking in the air is the basis for ensuring the safety of aircraft operation. With the continuous improvement of aero-engine technology, the continuous improvement of inspection and m...
Claims
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Login to View More IPC IPC(8): F02C9/28F02C9/26
CPCF02C9/28F02C9/26
Inventor 耿佳李明刘金鑫宋志平赵航
Owner XI AN JIAOTONG UNIV