为了了解内喷管间隙宽度对线性塞式喷管性能的影响，提出了对应着同一个内喷管的三种不同间隙宽度的塞锥。
To understand the effects of gap width between nozzles on linear plug nozzles performance, three plugs with different wide gaps were brought forward, which were fixed on the same inner nozzle.
另外在计算过程中发现，内喷管的性能是整个线性塞式喷管性能的主要组成部分，占了整个塞式喷管性能的三分之二以上。
In addition, it was found that performance of inner nozzle is the largest part of that of linear plug nozzles, accounting for more than two thirds of whole engine's performance.
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