Owing to the increasing demand for raising the thrustweightratio of modern aero engine, it is very important to optimize the structures of the components.
现代航空发动机不断追求提高推重比，优化其零部件的结构设计日益重要。
2
Meanwhile, linear drive has a simple structure, little thrust-weightratio, high stiffness, and there is no inter-segments, greatly improves the machining efficiency and machining accuracy.
而直线驱动结构简单，刚度高，推重比大且不存在中间传递环节，极大的提高了加工效率和加工精度。
3
When numbers of the inner nozzle are enough, plug nozzle has less size, less weight and higher thrust efficiency than the bell nozzle under same area ratio.