Fatigue life monitoring method of aero-engine
An aircraft engine, fatigue life technology, applied in the direction of engine testing, machine/structural component testing, measuring devices, etc., can solve problems such as easy failures, engine wear, etc., to save maintenance costs, easy to implement, and prevent aircraft engine fatigue The effect of simple life monitoring method
Inactive Publication Date: 2013-04-10
SHAANXI QIANSHAN AVIONICS
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Problems solved by technology
In the regular inspection of the same type of aero-engines, it is often found that there are great differences in the signs of life of the engines that have experienced the same working hour life, especially after long-term missions of the engines that have served as lead planes and long-term wingmen. After working the same working hours, the wingman's engine wears out more than the lead engine's engine, breaks down more easily and requires more maintenance work
Method used
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Embodiment 1
[0034] Embodiment 1: In the present embodiment, it is judged that A6 is an effective point of a complete cycle, and then the engine gas turbine speed of 98% by A6 corresponds to 0.8 in Table 1, and the complete cycle number K is obtained 1 =0.8.
[0035] It is determined that Q5, Q6, and Q7 are partial cycles, and then through the partial cycle coefficients corresponding to the engine gas turbine speeds of Q5, Q6, and Q7 in Table 2, the partial cycle numbers of Q5, Q6, and Q7 are respectively K 21 =0.10, K 22 =0.05,K 23 =0.15.
[0036] Then get the engine working cycle number N:
[0037] N=K 1 +∑K 2i = K 1 +K 21 +K 22 +K 23 =0.8+0.1+0.05+0.15=1.1, indicating that the engine life has consumed 1.1 standard cycles.
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The invention belongs to the field of aero-engine monitoring, and particularly relates to a fatigue life monitoring method of an aero-engine. The method comprises the steps of defining a standard rating cycle, determining elements of the fatigue life of the aero-engine, judging a complete cycle, judging a partial cycle, and summarizing the working cycle number N of the aero-engine. According to the fatigue life monitoring method of the aero-engine, states of the fatigue life of the aero-engine can be provided accurately by monitoring the fatigue life of the aero-engine, over-life running of the aero-engine within a working hour life span is avoided, and safety of the aero-engine is improved; regular checking time and discarding time of the aero-engine can be set accurately, maintaining efficiency of the aero-engine is improved, advance regular checking and discarding of an empty aero-engine are avoided, and therefore usage and maintenance cost of the empty aero-engine is saved; and meanwhile, the fatigue life monitoring method of the aero-engine is simple, accurate, easy to implement, and convenient to transplant, and can be transplanted to engines in other fields conveniently.
Description
technical field [0001] The invention belongs to the field of aero-engine monitoring, in particular to a method for monitoring the fatigue life of an aero-engine. Background technique [0002] The life control of aero-engine is one of the effective means to ensure its safe use. At present, domestic aero-engines generally use the working hour life to manage the life of the engine. However, the life of an aircraft engine is not only related to the operating hours of the engine. In the regular inspection of the same type of aero-engines, it is often found that there are great differences in the life signs of the engines that have experienced the same working hour life, especially after long-term missions of the engines that have served as lead planes and long-term wingmen. After working the same working hours, the wingman's engine is more worn out, more prone to failure and requires more maintenance work than the lead plane's engine. The cause of completely different life sig...
Claims
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IPC IPC(8): G01M15/00
Inventor 费生波夏元林程金
Owner SHAANXI QIANSHAN AVIONICS