基于RBCC的天地往返运载器动力方案研究

基于火箭基组合循环发动机(RBCC)的结构组成、工作过程和特点,结合某吸气式重复使用天地往返运载器所提出的动力需求,分析了采用RBCC组合循环发动机作为该运载器动力方案的可行性和动力系统指标,设计并计算了RBCC组合循环发动机在各个工作模态下的性能参数.针对相同的运载器使用要求,采用相同的总体和气动力参数,通过飞行弹道仿真,计算和比较了采用RBCC发动机和纯火箭发动机两种动力方案的天地往返运载器方案.研究结果表明,相对于纯火箭动力,采用RBCC动力能明显减小运载器的燃料消耗,并增大其航程.

Study on dynamic system scheme of launch vehicle based on RBCC

Based on structure,working process and characteristics of RBCC engine,dynamic system indices and the feasibility of RBCC engine dynamic system scheme of launch vehicle were analyzed in combination of some dynamic requirements of the air-breathing reusable launch vehicle.The performance parameters of the RBCC engine under each working modal were calculated.Aiming at the same requirements of launch vehicle,two kinds of dynamic system schemes of launch vehicle(such as RBCC engine and pure rocket engine) were compared by means of flight trajectory simulation,which use the same system and aerodynamic parameters.The investigation results show that compared to pure rocket engine dynamic system,RBCC engine dynamic system can obviously reduce fuel consumption and increase flight range.