Taking the impact jet flow field of individual rocket as research object, this paper calculates the jet flow field near the back of the launching tube by using the numerical simulation method.

该文以单兵火箭冲击射流流场为研究对象，采用数值模拟技术，对定向器管尾附近区域的燃气流场进行了数值计算，给出了发动机工作早期阶段冲击射流噪声场形成过程的计算结果。

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The vibration characteristic of launch tube in launching state can reflect the dynamic performance and the structural rationality of launch system, and it will influence the shooting precision.

定向器束在发射状态下的振动特性能够反映发射系统动态性能和结构的合理性，并且会影响火箭、导弹武器系统的射击精度。

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We illustrate the importance of noise reduction of underwater weapon launch tube, and summarize the classification of underwater launch tube and the main sources of launching noise.

阐明了潜用武器发射装置发射噪声控制研究的重要意义，归纳了潜用武器发射装置的分类以及武器发射噪声的主要来源。

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Garver said Wednesday that sending a small inflatable tube into space will be dramatically cheaper than launching a full-sized module.

NPR: Space Station To Get $18 Million Balloon-Like Room