射彈減速 的英文怎麼說
中文拼音 [shèdànjiǎnsù]
射彈減速
英文
deceleration of the projectile-
Derived from the 1929 fortress gun ( itself a development of the old 1897 field gun ) with a semi - automatic breech and an automatic loader added, the " high power " apx 75mm gun fired a mle 1915 he round with a reduced charge at 400 m / s and the mle 1915 ap round at 570 m / s ( 50mm penetration at 1000 m ) and its two sights and stereoscopic rangefinder allowed a direct fire range of 2000 m
「大威力」 apx型75毫米炮由1929型要塞炮(舊式1897型野炮的發展型)衍生而來,加裝了半自動炮尾和一個自動裝填器,發射減裝藥的1915型高爆彈(初速400米/秒) ,及1915型穿甲彈(初速570米/秒, 1000米距離可穿透50毫米裝甲) 。The lateral jets are caused to incline to the direction of rotating free flow and to weaken the effect upon base flow. furthermore, the spinning effect upon lateral jet is much stronger than that upon base bleed
與無旋轉情況對比表明,旋轉對彈丸側噴流以及底部流動均有影響,高速旋轉導致側噴射流向旋轉來流方向傾斜,並減弱其對彈底流動的引射。Keyboard operation, the space bar for a shot, upward direction of bond jumping forward direction keys to accelerate, back to the key slowdown
鍵盤操作,空格鍵為發射子彈,向上方向鍵為跳躍,向前方向鍵為加速,向後方向鍵為減速Introduction : keyboard operation, the space bar for a shot, upward direction of bond jumping forward direction keys to accelerate, back to the key slowdown
鍵盤操作,空格鍵為發射子彈,向上方向鍵為跳躍,向前方向鍵為加速,向後方向鍵為減速Deploy the chute. - no, we d snag the bridge
-彈射減速傘-不行,會撞斷橋Based on aerodynamic theory and the characteristics of the shockwave around a supersonic projectile, the article constructs a mathematical modeling of a l - shaped vertical target for projectiles shooting with forward direction and any direction, and analyzes the error sources and provides correcting ways to lower the error
摘要本文根據空氣動力學理論和超音速彈丸的激波特性,建立了在使用l型立靶基礎上正向射擊和任意角度射擊時的數學模型,並進行了誤差分析,提出了減小誤差的修正方法。It can be seen from the deformation courses of the tubes that the local dents firstly occur at the beginning of impact. with the growth of the dents, the stiffness decreases, and the rigid - body translations and the whole deformations take place. the initial kinetic energy of the missile decreases rapidly to approximate zero during the course of impact, and the energy is transferred to internal energy and kinetic energy of the tube
同時,也得到了一些實驗中沒有觀察到的現象:從模擬的管梁的變形歷程可以看出,在沖擊瞬時,管梁先發生局部凹陷,隨著局部凹陷的加大,管梁的抗彎剛度減小,然後太原理工大學碩士學位論文剛體平動和整體變形發生,而且速度越大,這種現象越明顯;子彈的入射動能在撞擊過程中急劇減小,撞擊結束后減小到可以忽略不計。The accurately controlled signal source generates sinusoidal elastic wave accurately controlled in frequency and stable in phase to " illustrate " underground media. time signal stacker receive signal by stacking and doing fft to measure the transfer function of media. " sompi " cepstrum method retrieve group velocity travel times and decayed factors of wave element from observational data of transfer function in a limited frequency window
精密可控震源用於產生頻率精確相位穩定的正弦彈性波以照射地層內部,信號疊加器通過對接收信號進行疊加和進行傅立葉變換的方式實現對介質傳遞函數的精密測量, 「存否」倒譜方法能夠根據一段窄帶頻域傳遞函數數據獲得時域上各個波成分的群速度傳播時間和介質衰減因子。分享友人