Experimental study on heat transfer efficiency of pyrotechnics enhanced by gas generator

This paper investigates the impact of the gas generator on the heat transfer of pyrotechnics. The enhancement effect is examined using a combination of experimental and engineering methods. The results demonstrate that the pyrotechnics exhibit favorable thermal performance based on performance testing. The heat transfer efficiency of the pyrotechnics can be enhanced by adjusting the structure of the gas generator, including the filter and gas outlet, as well as the shape of the pyrotechnics. However, regardless of the structure, there is a maximum peak where the gas generator achieves the highest rate of heat transfer enhancement for the pyrotechnics. Through analysis of the heat transfer experiment process, it can be concluded that the gas generator effectively reduces the heat transfer time of the pyrotechnics and minimizes heat loss during the process. Even when using coolant, the heat transfer efficiency of the pyrotechnics remains high at 69.31% after the gas generator enhancement.