环境温度对发射药自燃的影响

Influence of Environment Temperature on Thermal Self-Ignition of Propellant

以单基9/7发射药为例,发射药热自燃的数学模型通过实验测定不同环境温度下的自燃时间建立。该试验通过加热器对均热块加热,利用控温仪控制均热块温度。并在均热块腔体中部放入装好发射药的反应器,利用空气浴对其加热。再把测温探头插入发射药中,用测温仪测量温度及时间。由实验知,实验结果与数值模拟基本吻合。

Taking the single base 9/7 propellant as an example, the mathematical model of the self-ignition of propellant is established through testing the self-ignition time under different conditions of the environment temperature. In this experiment, the heater heats the hot piece, and the temperature control equipment controls its temperature. The reactor which is filled with propellant was placed at the middle of hot piece cavity, using vapor to heat. Then, after putting the temperature detector into the propellant, the temperature is tested and time is recorded. According to the experiment, the numerical simulation result is in accordance with that of the experiment.