Airplane maintainability assessment method
A maintainability and aircraft technology, applied in the direction of special data processing applications, complex mathematical operations, instruments, etc., can solve the problems that cannot accurately reflect the maintainability level, cannot accurately and objectively reflect the maintainability level at the end of the test flight, and achieve a reasonable evaluation method , the effect of accurate evaluation results
Active Publication Date: 2018-03-13
CHINESE FLIGHT TEST ESTAB
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Problems solved by technology
[0005] c) The maintenance data collected in the flight test stage come from various maintenance technical states, and the point estimation method cannot accurately reflect the maintainability level under the current technical state conditions
[0006] Therefore, the traditional point estimation method cannot be fully applied to the maintainability evaluation work in the flight test stage, and cannot accurately and objectively reflect the real maintainability level at the end of the flight test
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[0042] Maintenance Data Preprocessing
[0043] Due to the influence of data collection methods, technical level and other factors, some maintenance data collected at the flight test site often have certain deviations and abnormal values, which have a significant impact on the evaluation results. For example, the time of a certain maintenance is particularly Long, and among all the recorded maintenance time, there is no similar maintenance time data. The reason for this situation may be the negligence of the person responsible for collecting the maintenance data, filling in inaccurately, or adding up the time of multiple repairs into one record, or other unpredictable reasons that affect the maintenance process. And, the collected data may have multiple such outliers at the same time.
[0044] Therefore, the data should be analyzed first to identify its authenticity and reliability, so as to remove the false and keep the true, and if necessary, it needs to be corrected or rest...
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The invention belongs to the field of airplane test, particularly relates to an airplane maintainability assessment method, and aims at assessing mean time to repair (MMTR). In current trial flight stage, the traditional point estimation method cannot be completely suitable for maintainability assessment work of the trial flight state, and cannot correctly and objectively reflect the real maintainability level when the trial flight is ended. The invention provides an MTTR assessment method which is suitable for airplane trial flight stage maintainability data characteristics, reasonable, correct and high in assessment precision; a power function is utilized to establish a trial flight stage maintainability growth data assessment model; the assessment method is reasonable and correct in assessment result, and is capable of truly reflecting the practical process of trial flight stage airplane maintainability growth; and the method is well suitable for the engineering reality of trial flight stage maintainability assessment work. The assessment result can provide decision support for maintainability work after airplane column mounting.
Description
technical field [0001] The invention belongs to the field of aircraft testing, and in particular relates to an aircraft maintainability evaluation method, which evaluates mean time to repair (MTTR). Background technique [0002] At present, the domestic mean time to repair (MTTR) evaluation is mainly based on the provisions of GJB2072 "Maintainability Test and Evaluation", using the point estimation method of the ratio of cumulative maintenance time to maintenance times. This method is mainly applicable to the maintainability evaluation when factors such as the technical status of equipment and the technical level of maintenance personnel are relatively stable. Due to the dynamic changes of the aircraft, the application of the point estimation method in the maintainability evaluation of the flight test stage is limited, and it cannot accurately reflect the actual process of aircraft maintainability growth during the flight test stage, mainly in the following aspects: [000...
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Login to View More IPC IPC(8): G06F17/50G06F17/18
CPCG06F17/18G06F30/15
Inventor 刘宣鞠成玉王守敏陈星星苏明
Owner CHINESE FLIGHT TEST ESTAB