查询词典 rocket

The national defence basic project as background and the dynamic model of cotrolled transfer matrix for multiple launch rocket was created in order to reduce the initial disturbance of rocket projectile. The causes that affect the angle change of orientation locator were analyzed by the engineering system dynamic theory base on multibody system transfer matrix method. The simulation of dispersion for multiple launch rocket was implementation, and the affect law between the angle of elevation and side deflection and the control parameters was acquired. The control module was installed on the orientation locator of multiple rocket launcher to control the initial disturbance of rocket that provide new method and theory base and show the engineering system dynamic base on the multibody system transfer matrix method is effective.

本文以国防基础科研项目为背景，建立了通过控制定向器角运动来减小火箭弹起始扰动的多管火箭受控多体系统动力学模型，应用基于多体系统传递矩阵法的工程系统动力学理论，进行了定向器角度运动的影响因素分析，进行了受控多管火箭炮发射动力学和密集度数值仿真，得到了定向器俯仰和侧偏角控制参数对俯仰角和侧偏角的影响规律，为在火箭炮定向器上加装控制集成模块控制火箭弹的起始扰动和射击精度提供了新思路和理论基础，也表明了基于多体系统传递矩阵法的工程系统动力学理论的有效性。

China July 19, 1964, the successful launch of a biological rocket. October 27, 1966, the success of the missile test-firing of nuclear weapons. April 24, 1970 at the Jiuquan Satellite Launch of China's first man-made earth satellite "Dongfanghong No. 1." November 26, 1975, launched a retrievable satellite.1980 long-range carrier rocket successfully launched. 2 years later, the submarine underwater rocket launch a success.April 8, 1984, China's first geostationary communication satellite successfully launched the pilot. 1 February, 1986, China launched a communications and broadcasting satellites practical.September 7, 1988, China launched a meteorological satellite test "on the 1st situation." November 20, 1999, in the Jiuquan Satellite Launch Center rocket successfully launched the first "Shenzhou" spacecraft.At 9 o'clock on October 15, 2003, China launched its first manned spacecraft "Shenzhou 5" spacecraftin space flight of 21 hours, orbiting the Earth after 14 weeks, on the 16th early morning 6:23 in the safe return of ground .

中国航空中国1964年7月19日，成功发射了一枚生物火箭。1966年10月27日，导弹核武器发射试验成功。1970年4月24日在酒泉发射了我国第一颗人造地球卫星"东方红1号"。1975年11月26日，发射了一颗返回式人造卫星。1980年远程运载火箭发射成功。2年以后，潜艇水下发射运载火箭获得成功。1984年4月8日，我国第一颗地球静止轨道试验通信卫星发射成功。1986年2月1日，我国发射了一颗实用通信广播卫星。1988年9月7日，中国发射了一颗试验气象卫星"风云1号"。1999年11月20日，在酒泉卫星发射中心用运载火箭成功发射了第一艘"神舟号"试验飞船。2003年10月15日9：00，中国发射了第一艘载人飞船"神舟5号"，飞船在太空中飞行了21小时，绕地球运行14周后，于16日清晨6：23安全返回地面。

This paper takes one low-speed-circumgyrate rocket with a empennage asa research object, set up a relevant reference frame, analyse the strength andmoment on the amended rocket, ratiocinate the sports equation with 6 DOF; analyse the factors which cause terminal windage between pratical trajectoryand fiducial trajectory, take certain rocket for example, make use of theemluator on the influence of estimating precision caused by measuredinformation, find the speed, the trajectory obliquity, the trajectory setoverand the coordinate are the sensitive factor arosing terminal windage of thetrajectory; introduce the developing status of detecting technique, and basedon the actuality, choose the radar in the ground as measure equipment; simplydesign and analyse the setting and inflame control of the impulse engine onthe amended rocket; design the amend method and validate its feasibility takingthe use of emluator.

本文以某型低速旋转尾翼火箭弹为研究对象，建立了相应的坐标系，详细的分析了作用在弹道修正弹上的力和力矩，由动量定理和动量矩定理推导出了在一般形式下的弹道修正弹的空间六自由度的运动方程；对引起弹道落点偏差的因素进行了分析，以某口径火箭弹为例仿真了可测信息量对估算精度的影响，发现速度大小、弹道倾角、弹道偏角和位置坐标是引起落点偏差的主要因素；对弹道探测技术发展现状作综合性阐述，并基于现状，选用地面火控雷达作为测量装置；对弹道修正弹上脉冲推力器的安装和点火控制方法进行了简要的设计与分析；设计了弹道修正弹指令修正的修正方法，通过数字仿真验证了方法的可行性。

A rocket or rocket vehicle is a missile , aircraft or other vehicle which obtains thrust by the reaction of the rocket to the ejection of fast moving fluid exhaust from a rocket engine .

火箭是一种投射物、飞行器或其他的交通工具，它靠引擎流动气体的排出做为推力。

Long march 5 carrier rocket second half of the year will turn from plan design phase this year for first appearance phase, this rocket will achieve the goal of avirulent, free from contamination, the engine of the rocket is to use liquid oxygen kerosene and oxyhydrogen to make fuel.

长征五号运载火箭今年下半年将从方案设计阶段转为初样阶段，这枚火箭将实现无毒、无污染的目标，火箭的发动机是用液氧煤油和氢氧作燃料。

Signal:rocket:as a result the rocket's signal had something wrong,as a result,the rocket blew into sea.

发射火箭进入太空的信号出了差错，结果火箭爆炸掉入了大海。

This paper, which focused on the structure optimization theory and method, has finished such studies as follows: The three dimension model has been built, which provide the necessary conditions for the building of the dynamics equivalent model. By the launch dynamics simulation, the loads of the key joints when the rocket is launched has been got, which provide the necessary data for the finite element analysis and the structure optimization. The finite element model of the excess weight parts of the rocket has been built, buy the finite element intension analysis of the model in two conditions, the displacement and the stress of the key points have been got, which make us know the distributing of the stress and the transmogrification of the part. To satisfy the intension and the precision design request and to decrease the weight of the part as many as possible, the part has been topology optimized by the structure optimization theory and method. After that, the new model has been analysis in structure and launch dynamics. The contrast of the character change of the old part and the new part and the influence on the rocket system have been studied.

本文以结构优化理论和方法为核心，主要做了以下工作：建立了某自行火箭炮全炮三维实体模型，为建立该火箭炮系统的动力学等效模型提供了必要条件，进行了发射动力学仿真，得到该火箭炮发射装置各关键连接部位在发射状态下的载荷，为有限元分析和结构优化提供了必需的数据；建立了该火箭炮发射装置超重部分的有限元模型，分两种工况，对模型进行了有限元强度分析，得出了关键部位的位移和应力值，对其的应力和变形分布有了具体的了解；运用结构优化的理论和方法，对该火箭炮发射装置超重部分进行了拓扑优化，使其在满足强度和精度的要求下尽可能多地减轻重量，对优化后得到的模型进行了结构分析和发射动力学分析，对比了该部件优化前后的特性变化以及对火箭炮系统的影响。

It still is shenjijian, it is not v3 rocket or rus kaqusa rocket, ofcause today powder and rocket advenced a lot. and it is a top secret can not got confirmation and we need prove the Tungus mysterious explode by shinkijeon test

它仍然是神机箭，不是V3导弹或者喀秋沙火箭炮，当然今天火药和火箭技术比以前先进多了，并且它是顶级的机密不能证实，我们需要考证一下通古斯大爆炸是韩国人在测试神机箭

The main points are as follows:The interior ballistic experiments of rocket shell launching are conducted and the experimental data, including the pressure at the wall of rocket launching tube and the initial velocity of rocket shell, are obtained.

主要内容如下： 1进行了火箭弹发射的内弹道试验，测量得到了发射管壁面处的压力时间曲线、弹丸的炮口初速。

A meeting of Germany's early rocket pioneers, including Rudolph Nebel at left, Hermann Oberth, to the right of the rocket, Klaus Riedel, holding the small rocket, and behind him the dapper young Wernher von Braun.

会晤德国总统提前火箭先驱，包括1941鲁道夫在左边赫尔曼Oberth，到右边的火箭，克劳里德尔，举办小型火箭而身后的短小精华wernhervon百灵。

Objective To study the effect of chitosan in the prevention of fibrous scar formation in the epidural space after laminectomy.

目的 观察选择性脊神经后根切除术椎板切除后硬膜外几种防瘢痕粘连物质的作用并探讨其机制。

On his way to the lift, he looked back to us or was it me his eyes pointing?

当他要进电梯时，他回头看我们（或者说是我，他的眼光？