Curve plotting method characterizing aeroplane service lifetime degree and applications
A curve drawing and aircraft technology, applied in data processing applications, machine/structural component testing, measuring devices, etc., can solve problems such as low reliability, insufficient persuasion, and strong subjectivity, so as to avoid human resources and strengthen Comprehension and memory, with dynamic and intuitive effects
Inactive Publication Date: 2012-08-29
戚燕杰
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Problems solved by technology
These traditional methods can only be used for post-event recording and posting, and cannot show the internal relationship between the service life of the aircraft and the daily maintenance process of the aircraft, let alone directly characterize and express the future development trend. Some have long-term professional experience and professional knowledge accumulation Although it is possible to judge the future trend from traditional numbers and tables, it is easily influenced by personal experience, which is highly subjective, not reliable, and not convincing enough
However, the service life of modern aircraft is closely related to the daily maintenance process of aircraft (aircraft technical life is being replaced by aircraft maintenance life), which makes the functions of traditional methods more and more restricted in the field of modern aircraft engineering. tends to be significant with limitations
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[0032] For the domestically produced F-7 aircraft in China, according to the DMMH / FH and FH data reported by the user department, the annual summary data is based on the "dolphin curve" principle, and the DMMH / FH and life coefficient are fitted by least squares with a special software package The Q data method plots T=300, T=500, T=700, T=800, T=900, T=1000, T=1100, T=1200, T=1300, T=1400, T=1500, T=1600, T=1800, T=2000, T=3000 and other curves, each curve represents a proposed service life level T of the aircraft. Arrange all the curves in the same coordinate system to form a family of curves ( figure 1 ), this family of curves increases (or subtracts) item by item depending on the value of T, forming a contrastive relationship with each other. Comparing these curves and conducting a comprehensive analysis with other relevant data, it is preliminarily judged that the possible range of the service life T of the F-7 aircraft is 800 to 1200 hours (such as figure 1 ).
[0033]...
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The invention relates to a drafting method and application of curves indicating the service life extent of a plane, which is capable of directly indicating the service life extent of the plane and simultaneously reflecting the internal relationship between the curves and a plane maintenance process. The invention can detect the service life of the plane at real time through using available data without adding extra work with simplicity and reliability, visual reflection, accurate monitoring and strong adaptability. According to the 'dolphin curve' principle, the invention drafts a plurality of curves through repeatedly applying the least square fitting of the Direct Maintenance Man-hours per Flight Hour (DMMH / FH) of the plane and the life factor Q data of the plane, wherein the FH represents the actual flight hours of the plane, the accumulative total flight lifting number of the plane or the durable years of the plane, the DMMH / FH contains the information about the plane maintenance process, each curve represents one set accumulative total flight hours T, accumulative total flight lifting number or the durable years of the plane, and the life factor Q is equal to FH / T. The curve family increases by degrees or decreases by degrees based on different T values, and forms a contrast relationship between the curves. The mutual contrast is carried out time and time again to form a mutual verification and further obtain the expected accuracy through integrative judgment integrated with other correlative factors.
Description
1. Technical field: [0001] The present invention relates to a method for detecting the service life of an aircraft, in particular to a method for drawing a curve representing the service life of an aircraft and its application. family of curves. 2. Background technology: [0002] At present, the methods commonly used to characterize the service life of aircraft mainly include numbers, tables and tables. These traditional methods can only be used for post-event recording and posting, and cannot show the internal relationship between the service life of the aircraft and the daily maintenance process of the aircraft, let alone directly characterize and express the future development trend. Some have long-term professional experience and professional knowledge accumulation Although it is possible to judge the future trend from traditional numbers and tables, it is easily influenced by personal experience, which is highly subjective, not reliable, and not convincing enough. How...
Claims
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IPC IPC(8): G01M99/00
CPCG06Q10/04
Inventor 戚燕杰吕志刚
Owner 戚燕杰