Owing to the increasing demand for raising the thrust weight ratio 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。

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Meanwhile, linear drive has a simple structure, little thrust-weight ratio, 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。

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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.

在单元数足够多时，环簇式塞式喷管可比相同面积比的钟形喷管的尺寸更小，重量更轻，推力效率更高；

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And also, it appears to have a high thrust to weight ratio, which again is another positive.

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