1946年，世界上出现了第一台电子数字计算机“ENIAC”，用于计算弹道。
In 1946, there have been the world's first electronic digital computer "ENIAC", used to calculate the trajectory.
一个名为“子弹飞行”的iPhone应用软件可以让狙击手为射击计算距离和弹道，通过内建的卫星定位功能还能把本地天气状况的影响计算在内。
An iPhone app called Bullet Flight enables snipers to calculate range and trajectory for their shots, and built-in satellite-positioning allows local weather conditions to be taken into account.
以烧蚀火炮的阳线磨损曲线和一种挤进压力计算方法为基础，建立了考虑弹带挤进过程的内弹道模型。
Based on the wear curve of lands of erosion guns and a calculation method of engraving pressure, an interior ballistic model with the engraving process is established.
本文介绍了在研制“弹道相机”时，一种新型竖轴系的结构设计、轴系晃动误差和配合间隙的分析计算。
This paper describes the structural design of a vertical shafting, analyses and calculates the wobble error and fit clearance in the developed ballistic camera.
针对某型战机上挂载使用某型航空炸弹的问题，提出了一种炸弹弹道系数的符合计算方法。
In this paper aimed at the application problem of certain aviation bomb for a certain fighter, a coincidental calculation method of bomb ballistic coefficient is proposed.
给出了PN寻的制导系统的控制弹道实际有效导航比的计算公式及设计准则。
The computation equation and design criterion of real effective navigation ratio of homing control trajectory in PN homing guidance system were given.
建立了再入机动弹道数学模型，给出了气动力系数为速度、迎角、高度的函数拟合式，进行了最佳再入机动弹道设计和仿真计算。
The mathematical model of reentry maneuvering trajectory is established. The fitting expression of aerodynamic coefficient function on velocity, attack of Angle and altitude is presented.
此动力学模型可用于弹丸大攻角飞行时的弹道计算及某些灵巧弹药（如末敏弹）的设计。
This kinetic model can be used in ballistic calculation of projectile with large angle of attack and also in the design of some smart munitions(e. g. target sensitivity projectile).
提出了一种旋转固体火箭发动机的内弹道计算方法。
A method of internal ballistic calculation for spinning solid rocket motor has been presented in this paper.
飞机在威胁单次打击下的易损性计算方法通常假定威胁的弹道为直线，并且忽略跳弹影响。
When computing the vulnerability of an aircraft to a single threat hit, the assumptions are usually made that the threat travels along a straight trajectory and the ricochet is ignored.
建立了可用于现代火控计算机的火控弹道权函数法模型。
Presents a weighted function model for the flight traJectory of projectiles, oriented for applications with computers in modern fire control systems.
通过全程拦截弹道的设计与计算，验证了与空间目标直接碰撞的可能性，对末制导做了分析与计算。
According to the design and analysis of global intercept trajectory, the possibility of straightly impacting space target is verified, and the terminal guidance is analysed and calculated.
本文建立了火箭发动机在管内点燃情况下，串联结构的高低压无后座力发射器的内弹道方程，并对试验弹进行了数值计算。
This paper established the internal ballistics equation for the high-low pressure launcher with tandem construction when the rocket motor is ignited in the launch tube.
在理想弹道计算的基础上选取特征点，在每个特征点，将对象简化为一个二阶环节来近似。
Based on ideal trajectory calculation, characteristic points are chosen. On each point, plant is simplified as a second order one.
用人造地球卫星轨道计算的测速定轨方法，去拟合火箭飞行弹道的自由段，取得了比较满意的结果。
The result is satisfactory by using a method of the artificial earth satellite orbit determination from range rate observations to fit the free-flight trajectory of rocket.
实例计算结果表明，设计的下滑基准弹道可以满足载机不同发射速度、不同发射高度条件下弹道的技术要求。
The calculation result of example shows that glide standard trajectory designed can meet the trajectory tactical requirements when missile is launched in different velocity and altitude.
为了更精确地考虑地球对超远程弹道计算的影响，提出了一个计入精确正常重力的椭球地表弹道模型。
To consider the effect of the earth on the calculation of ultra range trajectory more accurately, an elliptic earth trajectory model adopting accurate normal gravity is established.
仿真结果表明换极后的球谐函数计算扰动引力能够满足精度要求，且在计算中弹道方程的解算速度也有很大的提高。
The result of simulation indicates that this method not only satisfies the precision but also enables us to enhance the calculation speed of the trajectory equations.
通过分析固体燃料冲压发动机内部燃烧和流动过程，建立了固体燃料冲压发动机内弹道计算模型。
With the inner combustion and flow analysis of solid fuel ramjet(SFRJ), the internal ballistic model within SFRJ is established.
本文根据提出的考虑点火过程的内弹道计算的物理模型，建立了数学方程。
In this paper, is developed a physical model with the ignition process taken into account, for the internal ballistics calculation of solid propellant rocket motors.
根据导弹受力特性分析，用拟合公式替代了复杂的外力计算，并建立了简化的外弹道模型。
According to force analyzing of missile, the complicated force calculation has been replaced by the fitting formula, and a simplified trajectory model has been developed.
研究了有关自由后坐试验车车轮转动对弹道自由后坐参数影响的修正计算方法，给出了修正计算方法及计算结果。
Exploration is made of computation correcting method for parameter effects of free recoil on the ballistics when the wheels of recoil trailer are moving in test.
从试验设计角度出发，借助动力学仿真软件ADAMS开发的内弹道计算模块，对内弹道循环进行了随机模拟。
From view of design of experiment, the random simulation of interior ballistics repetition is done using the interior ballistic computing module developed by the dynamic simulation software-ADAMS.
基于旋转稳定弹丸的6d刚体弹道方程，导出了弹丸转圈数公式，可对弹丸圈数进行准确计算。
Based on 6d rigid body trajectory equation, the spin-number formula of the projectile was deduced, by which the spin-number can be calculated.
本文还给出了弹道外推及误差估计的计算机模拟结果。
Computer simulation results of trajectory extrapolation and error estimation are also given in this paper.
对内弹道均相流数值计算，用拉格朗日坐标下的方程组，容易处理运动边界问题。
Moving boundary problem can easily be solved with equations under the Lagrange Coordinate System for numerical computations of homogenous flow in interior ballistics.
文中提供的计算方法具有较高预示精度，可推广到其它药四旋转发动机的内弹道计算，对旋转发动机设计具有指导作用。
The method has high accuracy being used to calculate internal ballistic performance of other grain configuration motor and plays a important role in spinning motor design.
在内弹道计算中，设燃烧产物为准定常流动，使用分段解析法进行内弹道的数值模拟。
The numerical simulation was carried out to compute internal ballistics by segmented analytical method in the assumption of grains steady flow of burning product.
给出了两种控制方法的导引律，计算了典型弹道的攻角、俯仰角和交班点速度等参数。
The Angle of attack, pitch Angle and velocity at shifted point for typical trajectory were calculated.
本文给出了底部点火装药结构两相流内弹道理论模型和计算步骤，并编制程序对两种火炮进行了数值分析。
In this paper, a two-phase flow interior ballistic model for the charge configuration with base ignition bag for two sorts of guns are presented together with computational procedures.
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