Review on aircraft secondary power system
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摘要:
第二动力系统(SPS)是承担关键任务的复杂机载系统。以美军装备为例分别介绍了典型的机械传动SPS、气压传动SPS和电气传动SPS并对三者的优缺点进行了总结,回顾了美军与国防承包商的SPS研发历程并分析了它们的技术特点,总结了先进SPS的四项关键技术,简要介绍了SPS的应用拓展并对SPS的发展趋势进行了展望。指出了未来先进SPS的四大主要技术特点:多电化架构、高功能集成度、能量综合、优化利用能力以及与主发动机的协同增效。
Abstract:Secondary power system (SPS) is a complicated airborne system which undertakes varieties of key tasks. Three typical SPSs of mechanical link, pneumatic link and electric link types were introduced with examples of U.S. fighters, and their advantages and disadvantages were summarized. The research on SPSs developed by U.S. force and defense contractors was reviewed and analysis on technical feature of these SPSs was conducted. Besides, four key technologies in advanced SPS were summarized and the extended applications of SPS were briefed. Finally, the development trend of SPS was prospected. Four key technical characteristics of advanced SPS in future were presented: multiple electric architecture, high integration of structure, comprehensive utilization capability of onboard energy and synergies between main engines and itself.
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表 1 不同类型SPS的比较
Table 1. Comparison between different SPSs
分类 优点 缺点 机械
传动
系统· 高效传动,可使用额定功率更小、更加轻质的JFS · 直接机械传动,JFS安装位置受限
· 复杂机械传动机构质量大,可靠性差,控制与维护复杂
· 短时工作制设备,空中起动能力弱
· 难以通过地勤设备实现主发动机二次起动气压
传动
系统· APU安装位置灵活
· ECS与起动机管路复用
· 易于通过地勤设备实现主发动机二次起动· 气压能传输与转化效率较低,需要较大额定功率的APU
· 气压管路占据大量体积
· 使用滚动轴承的ACM限制了系统体积的缩减多电
系统· 简化的SPS结构
· 电能传输效率高
· APU安装位置灵活
· 起动/发电机带来更高的系统集成度
· 更高的燃机燃油经济性
· 有利于二次能源优化管理和利用· 电能转换与管理依赖于高定额全控型电力电子器件
· 大功率、高速、高功率密度起动/发电机的研制有较大技 术难度
· 电储能系统的能量密度有待进一步提升 -
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