Then the muzzle flowfield with muzzle brake was simulated with the aforementioned experience. Those complex phenomena including precursor shock caused by quickly moving of projectile, muzzle flow structure produced by propellant gases, affection of blast wave behind muzzle area which formed by leading angle of muzzle brake, etc, can be observed clearly by these simulations.

同時(shí)藉由此經(jīng)驗(yàn)国产欧美日韩精品一卡，模擬含炮口制退器之炮口流場，獲得炮管內(nèi)因彈體高速移動產(chǎn)生之先導(dǎo)震波現(xiàn)象人人射人人看性爱视频、高溫高壓之發(fā)射藥氣體於炮口形成之噴流結(jié)構(gòu)及制退器排氣導(dǎo)孔對后方震波壓力傳導(dǎo)之效應(yīng)等良好結(jié)果被操好爽视频。

So it is important to make research on muzzle flowfield, and analyze the effects of muzzle blast wave on the firing precision of gun.

所以對膛口流場進(jìn)行研究，并分析膛口流場對彈丸的影響欧美精品黑人性XXXXWWW，對于指導(dǎo)實(shí)驗(yàn)和改進(jìn)火炮射擊精度很有意義91香蕉国产在线观看人员青。

The computation results agree with the experiment results very well. The muzzle flow field of an artillery with a muzzle brake is also simulated. The main characteristics and the mutual relations of shock waves in the muzzle flow field are obtained by the simulation. On the basis of the simulation results, the influences of the brake holes on the muzzle brake capabilities are analyzed.

對某口徑火炮帶有制退器的膛口流場進(jìn)行了數(shù)值模擬，其結(jié)果反映了制退器內(nèi)外流場的主要特征和沖擊波波系之間的相互作用性爱一级，在數(shù)值模擬的基礎(chǔ)上分析了3排側(cè)孔對制退器性能的影響欧美视频在线观看熟。

By using unstructured dynamic grid based on local remeshing method, the variation of grid caused by projectile movement was analyzed. Numerical computation results of gun muzzle flow field which arranged in time was obtained. The creation process of the complex flow field of gun muzzle was described. The numerical simulation of flow field including moving projectile was achieved.

采用基于局部網(wǎng)格重構(gòu)法的非結(jié)構(gòu)動網(wǎng)格技術(shù)處理彈丸運(yùn)動造成的網(wǎng)格變化，給出一系列按時(shí)間順序排列的膛口流場數(shù)值計(jì)算結(jié)果中文字幕黃色av，描述了復(fù)雜的膛口流場形成發(fā)展過程国产一级精品A级毛片，實(shí)現(xiàn)了含運(yùn)動彈丸的膛口流場的數(shù)值模擬。

The muzzle is substantial with good depth, and the lips complete the square, clean look of the muzzle, without excess skin or flews.

嘴唇：整個(gè)唇線呈正方形久久99视频首页，在口吻上顯得整潔欧美专区91第三页，沒有多余的皮膚或下垂的上唇。

In the gun-like design, manufacturing process, the design of a very wide range of gun-shaped device to optimize the system for retirement options, retirement system has the effect of the performance of two prominent, like a Barrett sniper rifle is the flat square muzzle retirement system, and another retirement system is a circular muzzle device.

在樣槍的設(shè)計(jì)95网站在线观看、制造過程中国产在线91精品免费，設(shè)計(jì)了很多種形狀的槍口制退器進(jìn)行優(yōu)化選擇，其中制退效果表現(xiàn)突出的有兩款人操人人操人人超碰，一款是仿巴雷特狙擊步槍的扁方形槍口制退器精品自拍视频手机在线观看，另一款是圓形槍口制退器。

The rest of the action is similar to the APS, but the muzzle is fitted with AKS-74U-style muzzle device / flash hider.

該行動的其余部分類似接入點(diǎn)看免费5XXAAA毛片om，但口吻與AKS - 74U式槍口裝置/焰裝置天堂精品视频在线综合网。

Grace: You need to muzzle your dog.

muzzle：給戴口罩，使緘默你得叫你的&狗&安靜點(diǎn)玖色视频在线。

Two main types of muzzle brakes named baffle type and light weight type have been designed for carrying out the simulation and analysis of muzzle flow in this research. The utilizing of parameters from simulations and some given conditions to impact deflectors of muzzle brakes to make the recoil part get a momentum to move forward in order to lower recoil force have been expressed in this research as well.

中文摘要本研究以折流板及輕量化兩種主要炮口制退器設(shè)計(jì)日韩精品电影在线观看播放免费，進(jìn)行炮口流場分析模擬，得到炮口周圍之壓力青草视频在线、氣流速度最近最新2019中文字幕免费看视频、密度及溫度等分布狀況；并利用模擬所獲得之?dāng)?shù)據(jù)配合已知之炮口條件沖擊炮口制退器之折流板啪啪啪黄片视频海外版，造成火炮后座部份向前之動量大黑吊日逼视频，用以降低后座力欧美www.，求出火炮裝置炮口制退器后，以炮口效率為主之各項(xiàng)相關(guān)參數(shù)日韩精品网站日韩在线播放视频免费。

Based on the simulation of 3D unsteady muzzle brake flow field, computed the force given to the barrel while the powder flow through the muzzle brake, calculated the max backlash velocity, and lastly got the efficiency of muzzle brake.

該方法以帶炮口制退器三維非定常流場的數(shù)值模擬為基礎(chǔ)最新中文字幕在线第一页，通過計(jì)算火藥氣體流經(jīng)制退器時(shí)火炮身管的受力，計(jì)算出身管在火藥氣體作用下的最大自由后坐速度日韩一级婬片A片免费手机版，進(jìn)而根據(jù)制退器效率的定義得到炮口制退器的效率91精品专区。