Selection of ejector-ramjet mode transition interval on RBCC
Selection of ejector-ramjet mode transition interval on RBCC
复制标题
DOI：
--
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Lv Xiang
中科院分区：
文献类型：
--
作者：
Lv Xiang
基于飞机设计流程图，建立了考虑RBCC约束的引射/冲压发动机真实的工作条件的性能评价方法，讨论了不同燃料发动机比冲和推力系数随飞行轨迹的变化，提出了以最佳比冲和最小推力波动为目标的引射/冲压发动机性能选择方法，并对引射/冲压发动机性能进行了分析提出了冲压发动机模态转换间隔的概念，并结合某使命的参考飞行轨迹，得出了飞行速度Ma=2.6±0.1，飞行高度11.7~12.9 km时的合理模态转换间隔。
The performance evaluating method that takes into account the RBCC restrictive real operation condition of ejector and ramjet mode was set up based on aircraft design flow chart.The change of specific impulse and thrust coefficient of motor using different fuels with flight trajectory were discussed.The selection method based on optimum specific impulse and minimum thrust fluctuation of ejector/ramjet mode transition interval was put forward.In considering the reference flight trajectory of a certain mission,the reasonable mode transition interval in condition of Ma=2.6±0.1 flight velocity and 11.7~12.9 km flight height was resulted.