Civil aircraft system type selection decision-making method oriented to four properties and operation cost

Abstract

The invention discloses a civil aircraft system type selection decision-making method oriented to four properties and operation cost. The method comprises the following steps: dividing and confirming four-property indexes and economic indexes of a civil aircraft system; on the basis of the confirmed four-property indexes and economic indexes, calculating the interval parameter correlation coefficient of each type selection scheme of the civil aircraft system; according to the interval parameter correlation coefficient, calculating a civil aircraft system attribute parameter weight; and according to the parameter weight, determining a comprehensive correlation degree value of the scheme. On the premise of ensuring that the four-property level of the system meets the requirements, the model selection cost is reduced, the subjective influence is eliminated, the influence of each parameter on the correlation degree is objectively ensured, the contrast among the schemes is reduced, the disadvantageous schemes can be effectively screened out, decision makers are guided to pay attention to different advantages of the advantageous schemes, and complete thoughts and engineering technical references are provided for civil aircraft system model selection decisions.

Description

technical field [0001] The invention belongs to the field of civil aircraft, and relates to a civil aircraft system type selection technology, in particular to a civil aircraft system type selection decision-making method oriented to four properties and operating costs. Background technique [0002] In recent years, with the continuous expansion of the global civil aviation market, the selection of aircraft system configurations has also increased. The system selection decision of civil aircraft is a work that integrates multiple complex factors such as airworthiness, technology, and economy. complex multi-attribute decision-making problems. In order to ensure that the aircraft complex system can work safely, stably, and economically, the status of the four attributes of the system, reliability, maintainability, testability, and safety, should first be evaluated in accordance with relevant airworthiness regulations, and then a better system operating cost should be considere...

AI Technical Summary

Problems solved by technology

In reality, civil aircraft has the characteristics of complex system, long development cycle, high precision, fierce market competition, and emphasis on operating economy. The four-character data of different system configurations have high complexity and volatility. There is often no definite value, but fluctuates within a certain interval. Compared with other parameters, it has greater uncertainty, and it is difficult to obey a typical probability distribution. In terms of civil aircraft system configuration selection, it is urgent to be able to quickly A technical solution to provide support for comprehensive decision-making under the condition of small amount of data and strong volatility

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