四个向外倾斜的喷管把固体火箭发动机的排气流分成四个相等的尾巴。
Four nozzles, canted outboard, split the exhaust of the solid rocket motor into four equal tails.
声压级在相交激波点附近出现剧烈变化，喷管出口处的激波和排气羽流造成强噪声。
The sound pressure level changes acutely in shock intersection, and shocks outside nozzle and exhaust plume cause strong noise.
从理论上证明：对这两类发动机的两相喷管流动特性可以通过一个共同的组合参数——当量排气速度来进行分析；
Theoretically, it is proved that for both these engines, the properties of two-phase flow in nozzle can be analysed with a common combined parameter which is equivalent to exhaust velocity.
在瓣形喷口中，排气被分开，流过各瓣和一个小的中央喷管。
In the lobe-type nozzle, the exhaust gases are divided to flow through the lobes and a small central nozzle.
这种点源分析方法考虑了排气气体和喷管的特性。
A source flow model incorporate with the characteristics of the exhaust gas and the nozzle is used in the analysis.
典型的四喷管火箭底部挡板采用涡轮废气排气方案能大大减少底部热流，这是脉冲式风洞的成功应用成果；
For a rocket with typical four-nozzles , using turbine exhaust scheme could greatly reduce the heat flux on the base plate. This is a successful example of impulse wind tunnel application.
在双涵道的混合排气系统中，内涵出口处加装突片，外涵采用引射的方式，这是一种有别于波瓣喷管的新型掺混结构。
Tabs were used in the two-flow exhaust mixer-ejector, which compose the mixing pumping system. It is a new kind of mixer-ejector, which is different from the lobed mixer-ejector.
在双涵道的混合排气系统中，内涵出口处加装突片，外涵采用引射的方式，这是一种有别于波瓣喷管的新型掺混结构。
Tabs were used in the two-flow exhaust mixer-ejector, which compose the mixing pumping system. It is a new kind of mixer-ejector, which is different from the lobed mixer-ejector.
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