一种舰载导弹固体火箭发动机烤燃过程的数值计算方法

为了能够有效避免火灾中导弹固体火箭发动机着火爆炸的灾难发生、保存舰艇的生命力和战斗力,建立了一种舰载导弹固体火箭发动机烤燃过程的一维传热数学模型.该数学模型考虑了辐射换热、对流换热、导热和化学反应源项的作用.利用有限差分方法,通过数值计算得到了发动机的温度时间分布曲线、温度空间分布曲线和着火延迟时间.结果表明,火焰温度和火焰温升速率对发动机的着火延迟时间有显著影响;发动机的绝热层对外界火灾有好的隔热作用;快速热烤下,推进剂的着火首先发生在外表面上.

An numerical calculation method on cook-off of solid rocket motor of ship-based missiles

In order to avert the accidents of solid rocket motor explosion in fire and preserve warship's life-force and combat effectiveness,a one-dimensional mathematical model about the cook-off of the solid rocket motor of the ship-based missiles was established in this paper.The effects of radiation heat transfer,convective heat transfer,heat conduct and chemical reaction were considered in the model.The temperature-time curves,temperature-space curves and self-ignite delay times of the motor were obtained by mea...