查询词典 ballistic trajectory

The paper analysis the ballistic trajectory character of the smoke ball and study the air resistance coefficient of the smoke ball. Based on the analyze, the paper establishes the terminal control model and uses the model to calculate and analysis.

文中通过对空抛式发烟弹弹道特点和空气阻力的分析，建立了基于控制空抛式发烟弹引信作用时间的终点控制模型，并运用模型进行了计算分析。

Air-cast smoke ball ; ballistic trajectory character ; air resistance coefficient ; terminal control

空抛式发烟弹；弹道特点；空气阻力系数；终点控制

Based on conventional ballistics theory,the mathematical model of the ballistic trajectory which adopts low and high pressure chamber fire mode is established for the small cluster tear bomb.

本文针对小型子母式催泪弹，采用经典弹道理论建立了高低压室发射方式的内外弹道数学模型。

In order to measure ballistic trajectory accurately, the measurement precision of the photoelectric theodolite should be investigated.

为了保证外弹道的测量精度，就应对光电经纬仪的测量精度进行合理设计。

The hydro-ballistic trajectory and cavity of sphere and pistol pellets entering water at three oblique angles and six velocities have been experimentally studied using a high-speed digital video recorder.

利用数字式高速录像机实验研究了球形与普通手枪两种弹丸在三个入水角、六种发射速度下斜入水的水中弹道轨迹与空泡。

In order to improve penetrativity of hypersonic missile and enable air-launched hypersonic cruise missile to penetrate with skip trajectory, a new approach of generating positive angle of attack during reentry phase of trajectory was proposed. Some key parameters of realizing skip trajectory were found out, and the effects of these parameters on ballistic performance were discussed.

为提高高超声速导弹的突防能力，使常规布局空中发射的高超声速巡航弹能采用跳跃式弹道突防，采用了在导弹再入段附加相应的正攻角产生气动升力的方法，找出了实现弹道起跳的关键参数，讨论了这些参数对弹道性能的影响。

Firstly this paper analyses and compares to the methods of target tracking and telemetry in common use, selects and uses the telemetry system that called'reversed GPS', aiming at the difficulties and challenge of ball cartridge examination and reclaim in these circs that the falling point distribution is random and wide extension, or deviates from the Hpredetermined ballistic trajectory and falling on the midway because of multi-target and long-distance aviation in experimental aviation based on traditional radio directional bearing.

结合课题研究背景，本文首先分析和比较了目前常用目标跟踪和定位方法的优缺点以及针对传统无线电定位技术在做飞行测试试验时由于目标飞行距离远、目标数量多导致的目标落点随机散布、范围广和偏离预定弹道、中途坠落等情况下给实弹试验测试和试验弹回收带来的困难与挑战，选用了&倒GPS&遥测系统作为测试测量方案。

Then the error models of the SINS and the GPS are established respectively, and the kinematics and the dynamics equations of the guided shell are founded with which ballistic trajectory of ERGS is simulated.

建立了制导炮弹弹体运动学和动力学方程，并进行了超远程炮弹的弹道仿真计算。

The research contents of this subject are mainly: Proposing the overall scheme of the soft firing technology, than confirm the best scheme; On the basis of best scheme , set up the mathematical model of soft firing system, and set up the interior ballistic trajectory calculating model among MATLAB/Simulink, set up soft the three-dimensional dynamics model of firing system among ADAMS; Go on joint simulation, simulating the characteristic curve of bore pressure and the sport law of piston and shot; Through adjusting the parameters such as piston quality、the diameter of unilateral valve、 charge weight、charge form coefficient and the delay time of lighting fire etc to make the soft firing system reach the best state of dropping the composition of forces of gun bore and increasing initial velocity of pill.

论文的研究内容主要是：提出软发射技术总体方案，确定最佳方案；在最佳方案的基础上，建立起软发射系统的数学模型，并在MATLAB/Simulink中建立内弹道计算仿真模型，在ADAMS中建立软发射系统的三维动力学模型；进行联合仿真，模拟膛压特征曲线及活塞和弹丸运动规律；通过对活塞质量、单向阀直径、装药量、药形系数、点火延迟时间等参数进行调整，使软发射系统达到炮膛合力下降、弹丸初速提高的最佳状态。

After the ballistic trajectory in midcourse was simulated, the aspect angles of warhead target were calculated in assumed scene by coordinate transformation.

仿真了空间目标飞行弹道后，通过坐标变换得到设定战情下的弹道目标雷达视线角。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。