查询词典 rocket

A boundary layer numerical solution was used for the computation of combustion in hybrid rocket motor according to the boundary burning theory.

引 言混合推进[1]的概念自从20世纪30年代提出之后，混合火箭发动机的燃烧问题就始终占据着重要的地位[2]。

Based on the SALE frame, the early code of ALE, compiled has been suitable for the Solid Rocket Motor combustion chamber flow field analysis computational procedure, the solution gas phase flows.

借助于ALE方法的早期程序SALE的基本框架，编写了适用于固体火箭发动机燃烧室流场分析的计算程序，求解气相流动。

Through malfunction of the tests of 810 Research Institute, the combustion performance of the hybrid motor and model about regression rate have been studied in the dissertation. The main aspects are as follows: The performance of the HNO3+N2O4 -HTPB hybrid rocket motor were all discussed.

本文结合航天科技集团公司810研究所正在研制的AK-20L/HTPB+Al组合固液火箭发动机，开展了固液火箭发动机混合燃烧特性的数值模拟工作，在此基础上给出固体燃料退移速率预示模型及预示结果。

Although there were no shops in the area, firecrackers were still cracking in the distance, and every now and then the darkness would be lit up by a double-explosion rocket or one of those known as " Five Devils Resisting Judgment".

这一带没有什么铺户，可是远处的炮声还继续不断，时时的在黑空中射起个双响或五鬼闹判儿。

Finally, the techniques of time-serial measurement for transient flow field, three-dimensiqonal tomography, computer image processing and the theories above quantitative calculation studied in the thesis are used to measure the free jet flow field of real rocket, the flow field of bore nozlle, impingment field of exhusted jet, three-dimensional flow field in hypersonic shock tunnel, the flow field of boundary layer transition, explosive and combustion flow field of detonating powder and 3-D temperature field.

最后，利用本文所研究的瞬态流场时间序列定量测试技术，三维C.T技术，计算机图像处理技术和定量计算理论等对真实火箭燃气射流场，膛口流场，燃气射流冲击场，高超音速激波风洞中的三维流场，模型边界层转捩区流场，起爆药爆轰流场和燃烧场、三维温度场等进行测试，取得了一些国际上首创性的成果，并对实现上发现的一些新现象进行理论分析和解释。

The vibration characteristics of an oxygen-turbopump rotor with a cantilever turbine disk of rocket engine have been studied on a rotating test rig.

在旋转试验器上研究了带悬臂涡轮盘火箭发动机氧涡轮泵转子的振动特性，并在此基础上完成了氧涡轮泵转子的高速动平衡试验。

The damage analysis of cracked turbine disk in the rocket engine is described. From a series of analyses, the causes of failure were reasoned through calculation and experiments, fatigue analyses which include stimulating vibration test and fatigue strength calculation were emphasized.

针对某火箭发动机涡轮盘在热试车中出现的裂纹故障，进行全面的分析，准确定位故障类型，以试验和计算分析给出合理的故障原因，重点是在疲劳分析方面所做的工作，包括振动模拟试验、疲劳强度计算，并根据疲劳强度分析结果提出改进方案。

At the same time it is shown the population dissociation coefficient method is abetter calculating method for structural reliability in solid rocket motors and themajor factor affecting structural strength reliability is the standard deviation.

在置信度为0.90时，其结构可靠度大于0.9954。同时表明总体变异系数法是较佳方法，影响结构可靠性的主要因素是样本标准差。

He consistance of the population dissociation coefficient method andthe sample dissociation coefficient method for the calculation of structural reliabilityin solid rocket motors was reviewed.

依据结构强度－工作应力理论模型，应用数理统计方法和对某团体发动机大量试验数据的实例计算，证明了总体变异系数法和样本变异系数法在结构可靠性计算中的一致性。

In 1964 he joined the Douglas Aricraft Company, Missile and Space Division as Design Engineer Scientist on the S-4 stage of the Saturn Rocket used on NASA's Apollo Project.

在1964年，他加入了的S - 4型火箭土星道格拉斯飞机中止起飞阶段的公司，导弹和航天科美国宇航局的阿波罗项目作为设计工程师科学家。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。