Aircraft Flight Control System Lcc And System Performance Analysis And Evaluation

A aircraft flight control system(FCS) is one of important wirborne electric equipment of an aircraft.From the view of customers,they always wish to acquire a useful,actual and secure system system on the premise of ensuring certain cost and progress.So,it's of very important practical significance for the producer and customer to study on how to overall balance the relationship of the cost,progress and performance index effiectively,and acquire a flight control with perfect performance and low life cycle cost.On the basis of collecting and processing many datum and materials.Firstly.this paper analyzes main activities and cost constitutions of each stage of the life cycle of a FCS ,and lay a foundation for later analysis and evaluation of system LCC.Secondly,a basis method and usage range for estimating the system LCC are introduced.A multivariate linear regression model of PCS development cost and cost driven factor is built by use of the parametric method and supplies the base of cost estimation of newly-developed systems.Thirdly,combine actual examples and make statistical analysis of LCC of a certain PCS developed by our institute,predict unhappened usage and service cost with grey prediction method,obtain proportion of each constitute to the LCC.Forthly,according to actual conditions,use the fuzzy theory to overall evaluate efficacy of the FCS,Fifthly,combimng our actual conditions,investigate specific measures of how to implement the life cycle cost management in our institute and put forward a new conception of developing WEB-based flight control system LCC management information system with PDM as the platform.At last,investigate important factors such as reliability and maintainability that may affect the life cycle cost of the FCS in detail,and put forward specific methods of lowering the life cycle cost of the FCS.