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- muzzle velocity error 初速误差
- This paper analyses the effective factors and restricted methods of combustible cartridge case charge on muzzle velocity probable error. 分析了可燃药筒对初速或然误差的影响因素及限制办法。
- Three error correction methods were brought forward.Time-speed compound and time-amended methods of error correction for muzzle velocity were described. 提出了相应3类误差修正的策略,描述了炮口初速误差修正的计时一计速复合体制和计时一计转数复合体制。
- A relatively short cannon that delivers shells at a medium muzzle velocity, usually by a high trajectory. 榴弹炮一种相对较短的大炮,通常以较高的弹道和中等初速度发射炮弹
- A relatively short cannon that delivers shells at a medium muzzle velocity,usually by a high trajectory. 榴弹炮一种相对较短的大炮,通常以较高的弹道和中等初速度发射炮弹
- The effect of the outer-volatilization of a rocket engine charge on the muzzle velocity was discussed and some ways and measures to guide manufacture were suggested. 通过对某火箭弹发动机装药的外挥对初速影响的定性和定量分析,得出用于指导生产的某些措施和方法。
- The Steyr ACR used new flechette ammunition that was nominally called 5.56 mm, with a very high 4750 ft/s (1450 m/s) muzzle velocity. 而施泰尔ACR使用了新的镖弹,通常被称为5.;56毫米弹药,但是具有极高的4750码/每秒(1450米/每秒)的枪口速度。
- A new kind of muzzle velocity sensor is designed which features as: small in size, light in weight,simple in structure, high reliability and low cost. 经过实弹射击证明,整套系统结构简单、使用方便,为高射速转管武器随炮实时测量弹丸炮口速度提供了一种可行方法。
- The newly developed rarefaction wave gun(RAVEN) can achieve low recoil momentum without decreasing the muzzle velocity of the projectile by means of delayed venting the breech. 膨胀波枪炮利用延时打开膛尾的方法实现了在不降低弹丸初速的前提下大幅度减小枪炮后坐的目的。
- This conclusion suggests that the perfect casting angle of shot casting is in fact the reasonable collocation and harmonization of casting angle and muzzle velocity. 这一结果提示:出手角度与出手速度间的合理配置是铅球获得最大远度的最佳出手角度。
- Abstract: The effect of the outer-volatilization of a rocket engine charge on the muzzle velocity was discussed and some ways and measures to guide manufacture were suggested. 文摘:通过对某火箭弹发动机装药的外挥对初速影响的定性和定量分析,得出用于指导生产的某些措施和方法。
- Second, we estimate the angular velocity error making use of accelerometer"s redundance information. 第二,利用九加速度的冗余信息估计残差,对如何提高角速度的解算精度作了研究。
- The simulation results show that the level damp of DINS can reduce the influence of the external velocity error,and restrain the error of longitude effectively. 通过仿真分析,比较两套阻尼系统的仿真结果,可以看出双惯导水平阻尼能够显著降低外速度误差的影响,抑制经度误差。
- A method was put forward,of which the actual law of bore wear and its corresponding muzzle velocity loss was obtained by simulating the law of bore wear,its corresponding muzzle velocity loss and weighting coefficient. 通过模拟的炮膛磨损规律及其对应的初速减退量和权系数,提出求得实测炮膛磨损规律对应的初速减退量的方法。
- The simulation results show that the level damp of DINS can reduce the influence of the external velocity error, and restrain the error of longitude effectively. 通过仿真分析,比较两套阻尼系统的仿真结果,可以看出双惯导水平阻尼能够显著降低外速度误差的影响,抑制经度误差。
- As for one specific gun ammunition system, by use of the established mathematical models the curve of the bore wearing, the muzzle velocity reduction related to that kind of curve and the weight coefficient at each section of that curve can be simulated. 对于某一火炮弹药系统,利用建立的数学模型可模拟出炮膛磨损曲线及每一条曲线所对应的初速减退量、曲线上各段的权重系数。
- The main parts are concluded as follows:(1) It has been evidenced that the deterred charge is appropriate to improve the muzzle velocity while controlling the bore pressure for small caliber gun. 从理论上论述了钝感装药是小口径火炮控制膛压、提高初速的适用装药。
- This paper analyzes the reason of systematic error forming, the sound velocity error and attitude error are thought to be two main contribution factors. 摘要在多波束数据处理中,系统误差一般很少被顾及,部分文献采用两步滤波法削弱了系统误差的影响,但所建模型的可靠性较差。
- To increase the muzzle velocity of the projectile but not the maximum pressure in bore,a new scheme of two-stage charge for the second propulsion in bore for large caliber weapons is introduced. 提出一种采用双级装药进行膛内二次发射以提高弹丸初速而不增大最大膛压的新技术,设计了双级装药弹的结构,为提高大口径身管武器的初速提供了一种新思路。
- This thesis bases on the acoustic wave equation, uses the wavefield extrapolation operator in frequency-wavenumber domain to analyze the migration velocity error. 声学波动方程描述了声波动现象的物理本质,本文基于声学波动方程,借助于频率波数域的波场延拓算子来开展偏移速度误差的分析。