为了提高引信热光伏电源的发电功率,从风帽的稳态温度场出发,分析了风帽的传热过程。根据分析结果,提出了一种由两种不同导热率的材料通过高温胶粘剂粘接而成的两段式风帽结构。数值仿真结果显示,与采用单一材料的风帽相比,两段式风帽不仅头部温度更高,分布更均匀,辐射功率大大提高,而且尾部温度更低,有利于散热。因此,两段式风帽理论上可以提高引信热光伏电源系统的发电功率。

In order to increase generation power of fuze TPV power supply system, the process of heat transferring inside the false cap was analyzed based on temperature field of steady-state. According to results of analysis, a two-section false cap consisting of two kinds of materials with different thermal conductivity bonded by high-temperature adhesive agglutinant was put forward. Computation results indicate that compared with false cap made up of a single material, the two-section false cap has higher temperature in its head and temperature distribution is more uniform, which resultes in great increase of radiation power. What's more, the tail temperature is lower, which is good for heat dissipation. The above mentioned results suggest that two-section false cap can increase power generation of fuze TPV power supply system theoretically.