机载综合射频系统机架结构设计与分析

随着航空电子技术的发展,先进的综合射频机架已经成为新一代战斗机的重要组成部分。为解决机载综合射频系统机架的热设计、隔振设计和电磁兼容性等难题,本文提出了机架的结构设计流程。以某型机架为例,采用自顶而下的设计方法,先确定结构形式和液冷分流方式,再对冷板流道和隔振形式进行了优化,最后设计背板结构。采用理论计算、仿真分析与试验相结合的方法验证了机架结构设计方案的合理性,满足系统指标要求。该设计过程可为相关产品结构设计和分析提供有益借鉴,并可在其基础上建立规范化的设计过程。

Mechanical Design and Analysis for Rack of Airborne Integrated Radio Frequency System

With the development of avionics technology, advanced rack of integrated radio frequency system has become an important part of the new generation fighter. To solve the problems of thermal design, vibration isolation design and electromagnetic compatibility of the integrated radio frequency rack, this paper puts forward the structural design process of the rack. In the case of a certain type of rack, the top down design method is adopted. At first, the forms of structure and cooling liquid distribution are determined, then the cold plate flow channel and the vibration isolation are optimized, finally the backboard structure is designed. Theoretical calculation, simulation analysis and test are combined to verify the rationality of the rack structure design scheme. The design meets the system requirements. This design process can provide useful reference for the structural design and analysis of related products, and based on which a standardized design process can be established.