RDX-CMDB推进剂激光点火特性

采用CO2激光点火的方法研究了双基推进剂SQ-2和RDX-CMDB推进剂在不同热流密度作用下的点火特性,探讨了RDX含量、Al粉和燃烧催化剂对RDX-CMDB推进剂点火性能的影响.实验结果表明,SQ-2和RDX-CMDB推进剂(含Al粉的配方除外)的点火延迟时间随热流密度增加而递减,且热流密度较高时,点火延迟时间变化趋...

Laser Ignition Characteristics of RDX-CMDB Propellants

Laser ignition characteristics of double-base (DB) propellant SQ-2 and RDX-CMDB propellants were researched by CO2 laser ignition at different laser fluxes, and the effect of content of RDX , Al powder and burning catalysts on ignition characteristics of RDX-CMDB was discussed. The results of measurements show that the laser ignition delay time of DB propellant SQ-2 and RDX-CMDB propellants except the sample containing Al powder decreases with increasing the heat fluxes and the change tendency was slowly convergent. Content of RDX , the additives of Al power and burning catalysts had some effect on the ignition delay time, and the influencing degree has related with the laser fluxes. The content of other components had little effect on the laser delay time of propellants except Al powder prolonging the delay time of the propellant at lower heat fluxes . And the delay time of propellants increased with increasing the content of RDX and Al powder and the catalysts in the propellant had both great influence on the laser ignition process and the delay time of the propellants at the higher heat fluxes.