Microsatellites have been widely applied in the fields of communication, remote sensing, navigation and science exploration due to its characteristics of low cost, flexible launch mode and short development period. However, conventional solid-propellant have difficulties in starting and interrupting combustion because combustion is autonomously sustained after ignition. Herein, we proposed a new type of solid-propellant named laser-controlled solid propellant, which is sensitive to laser irradiation and can be started or interrupted by switching on/off the continuous wave laser. To demonstrate the feasibility and investigate the controllable combustion behaviors under different laser on/off conditions, the combustion parameters including burning rate, ignition delay time and platform pressure were tested using pressure sensor, high-speed camera and thermographic camera. The results showed that the increase of laser-on or laser-off duration both will lead to the decrease of propellant combustion performance during re-ignition and re-combustion process. This is mainly attributed to the laser attenuation caused by the accumulation of combustion residue and the change of chamber ambient temperature. Simultaneously, the multiple ignition tests revealed that the increased chamber ambient temperature after combustion can make up for the energy loss of laser attenuation and expansion of chamber cavity. However, the laser-controlled combustion performance of solid propellant displayed a decrease trend with the addition of ignition times. Nevertheless, the results still exhibited good laser-controlled agility of laser-controlled solid propellant and manifested its inspiring potential in many aspects of space missions.

微型卫星具有成本低、发射方式灵活、开发周期短等特点，在通信、遥感、导航和科学探索等领域得到了广泛的应用。然而，传统的固体推进剂在启动和中断燃烧方面存在困难，因为燃烧在点火后会自动持续。在此，我们提出了一种新型固体推进剂，称为激光控制固体推进剂，它对激光照射敏感，可以通过打开/关闭连续波激光器来启动或中断。为了证明可行性并研究不同激光开/关条件下的可控燃烧行为，使用压力传感器测试了燃烧速率、点火延迟时间和平台压力等燃烧参数，高速相机和热像仪。结果表明，激光开启或激光关闭持续时间的增加都会导致推进剂在复燃和再燃烧过程中的燃烧性能下降。这主要是由于燃烧残渣的堆积和燃烧室环境温度的变化引起的激光衰减。同时，多次点火试验表明，燃烧后燃烧室环境温度升高可以弥补激光衰减和燃烧室腔体膨胀造成的能量损失。然而，固体推进剂的激光控制燃烧性能随着点火时间的增加呈下降趋势。尽管如此，