机载火控雷达要比一般雷达难度大,即要求高性能、多功能和高可靠性,因而结构上要求重量轻、体积小、维修方便。过去结构设计中有些问题不必考虑过多,而本机载设备必须特别加以重视,如较低和较高的环境温度、高湿度指标等。设备安装密度的好坏,要用元件安装密度、结构比重系数、占空系数、重量系数来衡量。可靠性用来衡量设备设计的好坏,体现在平均可靠时间和可靠度、使用时间、维护性系数以及设备的有效度等方面。衡量设备经济性的 Airborne fire control radar is more difficult than the general radar, which requires high performance, versatility and high reliability, so the structure requires light weight, small size, easy maintenance. In the past, some problems in structural design need not be considered too much, and the onboard equipment must pay special attention to such as lower and higher ambient temperature and high humidity index. Equipment installation density is good or bad, the use of component mounting density, the proportion of structural factors, space factor, weight factor to measure. Reliability is used to measure equipment design is good or bad, reflected in the average reliable time and reliability, time, maintenance factor and equipment effectiveness and so on. Measuring equipment economy