本文报导大气压下,固体推进激光点火实验中观测到的两个特殊现象.实验结果是:(1)测得水浸(或潮湿)复合推进剂在本文二氧化碳激光点火条件下的延迟时间为0.6～0.7秒,比干燥药柱点火延迟时间增长了0.8倍;(2)短脉冲、小光斑激光非自持点火时在双基推进剂药柱上燃蚀孔洞的定量观测. 讨论了形成上述点火现象的原因及其对固体火箭设计的参考价值. In this paper, we report two special phenomena observed in the experiment of solid-propelled laser ignition under atmospheric pressure.The experimental results are as follows: (1) The delay time of the flooding (or damp) composite propellant under the condition of carbon dioxide laser ignition is 0.6 ~ 0.7 seconds, which is 0.8 times longer than the ignition delay time of the dry column. (2) Quantitative observation of the burned holes in the double-base propellant grains during the short-pulse, small-spot laser non-self-sustaining ignition discussed the formation of the above ignition phenomenon Reasons and Reference Value for Solid Rocket Design.