固体火箭超燃冲压发动机燃烧室初步实验研究（英文）  

Preliminary experimental study on solid-fuel rocket scramjet combustor

作　　者：Zhong LV Zhi-xun XIA Bing LIU Li-ya HUANG 

机构地区：[1]Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2017年第2期106-112,共7页浙江大学学报（英文版）A辑（应用物理与工程）

摘　　要：目的:通过发动机直连式实验,验证燃气发生器产生的富燃燃气可以在超声速气流中二次燃烧,进而证明固体火箭超燃冲压发动机方案的可行性,并初步评估固体火箭超燃冲压发动机燃烧室的工作性能。创新点:1.提出固体火箭超燃冲压发动机构型方案,并开展固体火箭超燃冲压发动机燃烧室直连式实验研究;2.验证了固体火箭超燃冲压发动机构型可行;3.初步评估了固体火箭超燃冲压发动机燃烧室的工作性能。方法:1.通过直连式实验测定固体火箭超燃冲压发动机燃烧室的工作参数(图2、3和4);2.通过实验现象(图8)和数据处理,确定燃气发生器产生的富燃燃气可以在超声速燃烧室中燃烧,进而确定固体火箭超燃冲压发动机方案的可行性;3.初步确定发动机燃烧室的工作性能(公式(6)和(7))。结论:1.燃气发生器中产生的富燃燃气可以在超声速燃烧室中燃烧,固体火箭超燃冲压发动机构型方案可行;2.初步评估了固体火箭超燃冲压发动机燃烧室的工作性能,总压恢复系数约为0.6,燃烧效率约为90%;3.燃气发生器产生的部分一次燃气沉积于燃气发生器喉部,使燃气发生器的工作压力增加,进而引起富燃燃气质量流量的增加;4.燃烧室中的总压损失主要集中在富燃燃气入口处,总压损失主要由射流引起的激波和燃气二次燃烧引起。Liquid or gaseous fuel scramjet technology has made great progress, and there has been some research attention to solid-fuel scramjet. A new scramjet configuration using solid fuel as propellant, namely solid-fuel rocket scramjet, is tested experimentally. It consists of two combustors. One is a rocket combustor used as gas generator, and the other is a supersonic combustor used for secondary combustion. The experiment simulates a flight Mach number of 4 at high altitude（stagnation temperature and pressure are 1170 K and 1.16 MPa, respectively）, and metalized solid fuel is used as propellant. The results reveal that fuel-rich gas from the gas generator can burn with air in the supersonic combustor. Preliminary evaluation results show that the combustion efficiency of the propellant is about 90%, and the total pressure recovery coefficient in the supersonic combustor is about 0.6. These results indicate that the configuration of solid-fuel rocket scramjet is feasible.

关 键 词：固体燃料 火箭超燃冲压发动机 双燃烧室 直连式实验 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]