美军四代机第二动力系统技术分析与发展趋势

Technology analysis and development trend for secondary power system of U.S.fourth generation fighter

介绍了飞机第二动力系统的组成、工作原理。梳理了第二动力系统中APU和EPU由原来的分开布置、各司其职的构型和使用模式,发展到F-22战斗机第二动力系统物理组合、分时工作,以及F-35战斗机第二动力系统功能综合、持续运行的动力与热管理构型和使用模式的技术特点。总结提炼出第二动力系统在飞机需求的牵引和先进技术的支撑下,围绕关键动力设备,不断兼容其他功能,充分提高系统的综合程度和利用率的发展趋势。

The composition and working principle of the aircraft secondary power system are introduced.The APU and EPU in the secondary power system initially were arranged and performed separately and then they were combined physically and work in different phase in the F-22 fighter.In the F-35 fighter,the secondary power system is featured with integrated function and continuous operation of power and thermal management configuration and operation mode.Based on the traction of aircraft demands and the support of advanced technologies,the development trends of the secondary power system was summarized,i.e.to cen⁃ter around the key power equipment and constantly get compatible with other functions to fully improve the integration degree and utilization rate.