直升机复合材料导电结构制造工艺

Manufacturing Technology of Conductive Structure of Helicopter Composite

碳纤维复合材料的低电导率,使得直升机碳纤维复合材料结构加装的通信设备受到了影响,形成杂波,在一定程度上影响了通信设备的使用效果。为提升直升机碳纤维复合材料结构连接的导电率,以直升机复合材料尾梁为研究对象,通过提升复合材料尾梁设备接口与复合材料尾梁结构的接触性能以及复合材料尾梁自身的电导率,来大幅提升直升机碳纤维复合材料结构的导电率。经过多次验证并装机验证发现,直升机复合材料尾梁导电材料需连续,导电结构长度与电阻具有线性关系且可以通过对设备接口进行预处理的方式提升直升机复合材料尾梁的电导率。具体操作:(1)在导电方向上应连续铺放铜网,以保证导电结构的连续性;(2)在与其部位的成部件导电连接时,用于连接的铜片需要进行预处理,再与铜网进行锡焊连接,可以获得效果稳定的导电界面;(3)导电效果与导电通路的长度和预处理质量相关,基本属于线性关系。

The low conductivity of carbon fiber composite generated clutter signals which have a bad effect on the communication equipment mounted on carbon fiber composites of helicopter.In order to improve the conductivity of connection structure of carbon composite helicopter,the composite beam of helicopter was taken as the research object.Through increasing the connection performance between the communication equipment interfaces and the composite beam structure and the conductivity of helicopter tail beam itself,the conductivity of carbon fiber composite was improved efficiently.The results from several experiments and verifications of installation show that the conductive material of carbon fiber composite should be continuous,and there is a significant linear correlation between the length of the conductive material and the resistance value.The pretreatment on the communication equipment interfaces can increase the conductivity of carbon fiber composites.The steps of the pretreatment are as follows:(1)Copper meshes should be placed along the conductive direction continuously to keep the continuity of conductive structure;(2)During the conductive connection with other parts,the copper sheet used for connection need to be pretreated and welded with the copper mesh to obtain a stable conductive interface;(3)The conductive effect is related to the length of conductive path and the quality of pretreatment,which is basically linear relationship.