几何结构可调的亚燃冲压发动机性能研究

液体亚燃冲压发动机结构简单、推重比高,是高动态临近空间飞行器的最佳动力装置,临近空间飞行器的飞行速度范围宽、距离远,亟需采用几何结构可调技术来提高冲压发动机的性能。本研究对具有固定、连续可调进气道和尾喷管的冲压发动机性能进行了计算和比较。结果表明,采用连续可调喷管的冲压发动机的性能大大优于固定几何结构的冲压发动机,进气道可调带来的冲压发动机性能增加远小于喷管连续可调带来的发动机性能增加。

Performance research of adjustable geometric structure ramjet engine

Simple structure and high specific impulse liquid ramjet is the best engine concept of high dynamic vehicles near space.The vehicles with large flight velocity range and long flight distance near space require high performance ramjets that adopt adjustable geometric structure technology. The ramjet performance is calculated and compared with fixed and continuous adjustable structure intake and nozzle in this paper.The results show that the performance of a ramjet with continuous adjustable nozzle is much be...