在文中所研究的引射燃烧室结构条件下，存在一个最佳二次喷管出口面积，它能使引射火箭的推力达到最大。
There exists an optimal exit area of secondary nozzle to result in a maximum thrust of rocket ejector in the light of the investigated ejector chamber structure.
本文用严格的变分法导出了最大推力喷管出口控制面方程。
In this paper, employing rigorous variational calculus, equations of control surface at maximum thrust nozzle exit are derived.
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.
有斜切模型的喷管形状不对称，内流在出口处产生的扰动在较长一侧喷管壁反射，出现激波现象，引起流动的变化。
Because nozzle shape with oblique cut models is asymmetric, the disturbance produced at the exit of nozzle is reflected on the longer side and causes shock waves in the inner flow.
结果表明：（1）水蒸汽凝结主要发生在引射喷管和喷管出口膨胀区中。
The results show that(1) Vapour condensation occurs in ejector nozzles as well as at the regions just downstream the nozzle exit.
计算结果表明，该喷管出口锥与延伸锥结构是安全的，但考虑到材料性能的波动，安全余量较小，应从设计上保证产品的可靠性。
According to the computed result , the structure of NEEC is safe , but its safety margin is small, so the safety of the product should also be ensured through the design.
二次冷喷流对喷管扩散段出口附近壁面有非常明显的冷却作用。
The numerical simulation also indicated that secondary cold gas injection had very obvious effects on the surface wall about the exit of the nozzle diffuse.
数值结果表明：在扩张比和进出口压力相同的条件下，微喷管出口马赫数随着微喷管尺度的减小而减小。
The numerical results also show that the first sonic point position moves away from the throat to the outlet of the micro nozzle with decrease of the throat width.
实验发现外套出口和混合管之间夹层存在气流倒流现象，倒流平均速度随着主喷管流量和下洗气流速度增加而增加。
The averaged gas velocity of flowing backward between the exhausting duct and the mixture tube increases with the rise of the main nozzle flux and the downwash flow velocity.
当射流速度比较大时，喷管的缺陷如进口出口的毛刺和流道壁的粗糙度是诱发湍流使射流破断的主要原因。
The turbulence induced by the defects of nozzle, such as the burr at the inlet and outlet, and the roughness of the wall, is the main cause to decrease the length of intact jet.
采用STAR - CD计算流体软件对某俄式发动机的喷管内流场及喷管出口处流场进行了三维的数值仿真与研究。
Numerical 3d simulation and research on inner nozzle and outlet flow field of solid rocket motor of long range missile designed by Russia using STAR-CD computational fluid software.
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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