This study provides an experimental analysis of the throttling methods implemented using a throttleable injector that generates a thrust in the range 24–64% on a 50 N monopropellant thruster using 90 wt.% hydrogen peroxide and ${\mathrm{MnO}}_2/\mathrm{PbO}/{\mathrm{Al}}_2{\mathrm{O}}_3$. The injector proposed in this study is a dual-plate injector. It is capable of controlling the mass flow rate using radial slotted and showerhead-type plates. The slotted plate was rotated and pressed against the showerhead-type plate by intersecting a number of injection ports to control the mass flow rate. Firing tests were conducted over the throttling range to verify the feasibility of the concept of the dual-plate injector. The experimental data of the injectant flow rate and chamber pressure were analyzed parametrically. It was observed that the dual-plate injector had a characteristic velocity in the range 81–97% depending on the range of thrust. In addition, a correlation was observed between the characteristic velocity efficiency and response time of the injector under varying injection conditions; that is, the characteristic velocity tends to increase with a decrease in the response time. The result can be applied to optimal control systems, and also be used to execute advanced missions accurately using a monopropellant thruster.

这项研究对使用节流式喷油器实施的节流方法进行了实验分析，该节流式喷油器使用90 wt。％的过氧化氢和 ${\mathrm{二氧化锰}}_{\mathrm{2个}}/铅/{铝}_{\mathrm{2个}}{\mathrm{Ø}}_3$。在这项研究中提出的喷射器是双板喷射器。它能够使用径向开槽和莲蓬头型板来控制质量流量。通过与多个注入口相交以控制质量流率，旋转开槽板并将其压在喷头型板上。在节流范围内进行了点火测试，以验证双板喷射器概念的可行性。参数分析了喷油器流量和腔室压力的实验数据。可以观察到，双板喷射器的特征速度取决于推力范围，在81-97％的范围内。另外，在变化的喷射条件下，在喷射器的特征速度效率和响应时间之间观察到相关性。那是，特征速度趋于随响应时间的减少而增加。该结果可以应用于最佳控制系统，也可以用于使用单推进剂推进器准确地执行高级任务。