摘要
研究不同海拔环境下的热管理技术对于航空活塞发动机的性能提升和可靠运行具有非常重要的意义。大气的密度和压强随海拔的降低导致传统发动机热管理系统无法满足高空工况的散热需求,但结合飞行器特点制造外部的强制湍流和增大散热面积仍是提高热管理性能的一个有效手段。由于不同海拔对航空活塞发动机热管理系统性能造成的影响不同,热管理系统海拔适应性的分析可以为航空活塞发动机热管理技术的发展提供依据。分析了航空活塞发动机热管理技术的发展方向和特点,从海拔的影响因素、多目标优化和综合热管理系统三个方面归纳了航空活塞发动机热管理系统的几个关键技术问题,最后指出未来的工作方向。
Research on thermal management technology in different altitude environments is of great significance for the performance improvement and reliable operation of aviation piston engines.The density and pressure of the atmosphere decrease with altitude,which makes the traditional engine thermal management system unable to meet the heat dissipation requirements under high-altitude working conditions.Creating external forced turbulence and increasing the heat dissipation area based on the characteristics of the aircraft are effective means to improve the thermal management performance.As different altitudes have different effects on the performance of the thermal management system of the aviation piston engine,the analysis of the altitude adaptability of the thermal management system can provide basis for the development of thermal management technology for aviation piston engine.This paper analyzes the development direction and characteristics of thermal management technology for aviation piston engine.Several key technical issues of the thermal management system are summarized from the aspects of altitude influence factors,multi-objective optimization and comprehensive thermal management system.Finally,the future work directions are pointed out.
出处
《现代机械》
2021年第4期1-6,共6页
Modern Machinery
关键词
航空活塞发动机
热管理
散热器
高空
海拔适应性
aviation piston engine
thermal management
radiator
high altitude
altitude adaptability
