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A Method for Aircraft Maintainability Evaluation

A maintainability and aircraft technology, applied in the direction of complex mathematical operations, geometric CAD, special data processing applications, 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 achieves the evaluation method Reasonable and accurate results

Active Publication Date: 2021-02-09
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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  • A Method for Aircraft Maintainability Evaluation
  • A Method for Aircraft Maintainability Evaluation
  • A Method for Aircraft Maintainability Evaluation

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Embodiment Construction

[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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Abstract

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). In the current flight test stage, 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. The present invention provides a reasonable, accurate, and high-precision average repair time evaluation method suitable for the characteristics of maintainability data in the flight test stage, and proposes to use the ghost function to establish a maintainability growth data evaluation model in the flight test stage. The evaluation method is reasonable, The evaluation result is accurate and can truly reflect the actual process of aircraft maintainability growth during the flight test stage. This method can be well applied to the engineering practice of maintainability evaluation work during the flight test stage. The evaluation results can provide decision support for the maintenance work of the aircraft after it is installed in the army.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/15G06F17/18
CPCG06F17/18G06F30/15
Inventor 刘宣鞠成玉王守敏陈星星苏明
Owner CHINESE FLIGHT TEST ESTAB
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