Method for determining influences of various factors on average repair time of aircraft brake system

Abstract

Provided is a method for determining influences of various factors on average repair time of an aircraft brake system. The factors influencing the average repair time of the aircraft brake system are determined, wherein the influences of the factors include an influence of a fault location factor, an influence of a fault isolation time factor, an influence of a product decomposition time factor, an influence of a product replacement time factor, an influence of a product and aircraft combination time factor, an influence of a product alignment time factor and an influence of a product check time factor; the influences of various factors on the average repair time are compared; and the factor with high influence serves as a factor for calculating the average repair time. Therefore, the accuracy of data calculation is improved, an analytic result not meeting a repair operation condition is prevented from being obtained, the waste of manpower and material resources in a repair operation process is avoided, and higher resource consumption caused by flight delay due to misleading of the average repair time is avoided.

Description

technical field [0001] The invention relates to the field of maintainability of aircraft braking systems, in particular to a method for determining the influence of various factors on the average repair time of aircraft braking systems. Background technique [0002] GJB451A's definition of mean repair time is: "A basic parameter of product maintainability, which is a design parameter. Its measurement method is: under specified conditions and within a specified time, the product is at the specified maintenance level, The ratio of the total time of corrective maintenance to the total number of faults of the repaired products at this level.” Aircraft are classified into three levels: field level, intermediate level, and base level, and the maintenance of brake system products is also the same. The maintenance work that the maintenance personnel can complete at the use site; the intermediate-level maintenance refers to the maintenance work that can be completed by the civil avia...

AI Technical Summary

Problems solved by technology

[0017] The disadvantage of this allocation method: it does not reflect the influence of the installation position of the product on the aircraft and the connection method on the aircraft on the average repair time, and lacks the comparison of influence, so it has nothing to do with the difficulty of product maintenance. The abnormal phenomenon of excessive product maintenance time and insufficient maintenance time for complex products does not take into account the actual situation of long maintenance time for complex products and short maintenance time for simple products

[0028] This allocation method is widely used in product development, but it has the following disadvantages: because the average repair time is inversely proportional to the failure rate of the product, complex products have a short average repair time due to the high failure rate; simple products have a low failure rate , the assigned average repair time is long; although this method considers the measures to correct the average repair time of the system, it does not take into account the influence of various factors on the average repair time, and the comparison of influence is not carried out. The allocation method is not Accurate, there is a phenomenon that the maintainability index is assigned incorrectly

[0039] Disadvantages of this allocation method: formula (4) is also related to the failure rate of the product, and there is a shortcoming that the average repair time of complex products is short, and the average repair time of simple products is long; although this method takes into account the average repair time of the system Corrected measures, but did not take into account the influence of various factors on the average repair time, did not compare the influence, so that the most influential factor was included in the calculation model

[0046] Disadvantages of this allocation method: This method treats similar functions, principles, and materials as similar products, but ignores the impact of different installation locations and accessibility on maintenance when maintenance is performed on different aircraft, resulting in maintenance allocation results. There are also disadvantages that do not conform to reality

[0055] Disadvantages of the allocation method described in formulas (8) and (9): units with high failure rate have low availability, which is essentially a concept related to failure rate and related to the number of components. The more the number of components, the higher the failure rate , does not reflect the installation position of the unit on the aircraft and the factors related to the accessibility of the unit. It also has the disadvantages of short maintenance time for difficult-to-maintain units and long-term maintenance time for easy-to-maintain units.

Although this method takes into account the measures to correct the average repair time of the system, it does not take into account the influence of various factors on the average repair time

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