某型航空活塞发动机散热器优化设计及高空性能研究
Optimization Design and High-Altitude Performance Study of A Certain Type of Aviation Piston Engine Radiator
王磊 1刘中宝 1张文博 1雷乾乾1
作者信息
- 1. 中国航天空气动力技术研究院彩虹无人机科技有限公司,北京 100074
- 折叠
摘要
以某型航空活塞发动机散热器为研究对象,针对原厂散热器性能不足进行了优化,用Matlab建立了散热器设计仿真模型,通过仿真值与试验值的对比,验证了仿真模型的准确性.风洞试验结果表明,优化后散热器满足某无人机飞行包线内使用.在发动机热负荷一定的条件下,通过GT-COOL模块仿真和飞行试验,研究了散热器的温度特性及高度特性.结果表明:对于研究的散热器,在标准大气条件(ISA)0-5km海拔范围内,随着高度增加,密度降低,无人机真空速提高,气液温差增大,散热器散热量增大.1km时散热器散热量相对于海平面散热量升高了7％,5km时散热器散热量相对于海平面散热量提高了30％.
Abstract
Taking a certain type of aviation piston engine radiator as the research object,optimization was carried out to address the insufficient performance of the original factory radiator.The wind tunnel test results show that the optimized radiator can meet the requirements of a UAV flight envelope.Under certain engine thermal load conditions,the temperature and height characteristics of the radiator were studied through GT-COOL module simulation and flight tests.The results show that,for the radiator under study,in the altitude range of 0-5km in standard atmosphere conditions(ISA),with the increase of altitude,the density decreases,the vacuum speed of UAV increases,the gas-liquid temperature difference increases,and the heat dissipation capacity of the radiator increases.At 1km,the heat dissipation of the radiator increases by 7％compared to sea level heat dissipation,and at 5km,the heat dissipation of the radiator increases by 30％compared to sea level heat dissipation.
关键词
航空活塞发动机/散热器/优化设计/高空性能Key words
Aviation piston engine/Radiator/Optimization/High-level performance引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据