摘要
文中研究了某高空高速无人机载电子设备的热设计问题。针对某高空高速无人机上冷却资源稀缺的特点,提出了结构热惯性和液氮冷却相结合的冷却方式,并设计了2种冷却单元的结构形式。通过实验研究,得到了不同供液工况下的电子设备温度分布,并分析了液氮消耗量对单元温度分布的影响。结果表明:在极少的载机冷却资源条件下,该热设计方式仍可以保障电子设备工作在允许的温度范围内。该设计方式可以供类似热设计参考。
The thermal design of HAHS（ High-altitude and High-speed） UAV airborne electronic equipment is studied in this paper. To solve the problem caused by shortage of cooling medium, a cooling method is put for- ward which combines structure thermal inertia and fluid nitrogen cooling. Based on this method, two cooling units are designed with different structures . After several experiments , the temperature distributions of the electronic equipment at different cooling liquid supply are obtained, and how fluid nitrogen consumption affects unit temperature distribution is also analyzed. The experiment result shows that despite extreme lack of cooling medium, this cooling method can ensure that the airborne electronic equipment works within allowable temper- ature range. This design method can provide a useful reference for future similar thermal design.
出处
《电子机械工程》
2013年第5期13-15,共3页
Electro-Mechanical Engineering
关键词
无人飞行器
液氮
电子设备
热设计
UAV （unmanned aerial vehicle）
liquid nitrogen
electronic equipment
thermal design
