民用飞机设备和管线路设计优化工具的研究

Research on design optimization tool for civil aircraft equipment and pipeline

为了解决飞机研发过程中,管线路及设备设计自动化程度低的问题。基于CATIA V5进行二次开发,使用API接口和VB语言实现相关工具的搭建,并主要在以下几个方面开展研究:一是在飞机初步设计阶段进行设备的快速布置;二是基于电气设备及周围零部件的空间布置,进行单一DMU管线路通道拓扑,通过EWIS隔离代码定义,规划线束通道的类型,自动分析通道之间的物理隔离距离,并依据EWIS隔离要求规范与自动分析的物理隔离距离进行分析,从而输出全机管线路通道之间的间隙检查结果及分析报告,为后续的通道拓扑优化提供相应的接口及设计规范;三是进行主通道及分支通道拓扑,通过定义通道的直径、通道内布置线缆的规格及不同形式布线的概率,开发工具自动计算EWIS线缆的总长度,并由公式快速计算出该线缆敷设方案的重量,供全机设计时参考。

In order to solve the problem of low degree automation in the design of pipelines and equipment during the aircraft development process,the secondary development based on CATIA V5 was carried out,and the related tools were built by using API interface and VB language.And mainly carrying out research in the following aspects.Firstly,the rapid layout of equipment was carried out in the preliminary design stage of the aircraft.Secondly,based on the spatial arrangement of electrical equipment and surrounding parts,a single DMU tube line channel topology was carried out.According to the definition of EWIS isolation code,the type of wiring harness channel was planned,the physical isolation distance between the channels was analyzed automatically.According to the EWIS isolation requirement specification and the automatically analyzed physical isolation distance,the results of clearance inspection and analysis report between the lines and channels of the whole machine were output so as to provide corresponding interfaces and design specifications for subsequent channel topology optimization.Thirdly,the main channel and branch channel topology were carried out.By defining the diameter of the channel,the specifications of the cables arranged in the channel and the probability of different types of wiring,the development tool automatically calculated the total length of the EWIS cables and quickly calculated the weight of the cable laying scheme by the formula,which can be referred for the whole aircraft design.