In this paper, firstly the macro parameter of the series connection app was comprehensively analyzed, among which the trajectory location of the bullet emission and the terminal velocity of the bullet were mainly analyzed, and the feasibility of the series connection app to cope with explosive reactive armor was demonstrated. and then the macro design about the head of the series connection app was made, among which a particular analyse about the bullet " s launching process was made, from which we concluded the relation between the thickness of the airproof loop and the velocity of the bullet detached from the carrier and the relation between the length of the bullet and the velocity of the bullet detached from the carrier and the relation between the length of the bullet and the burning rate of the powder and the relation between the length of the bullet and the maximum pressure of the emission hole and the relation between the length of the bullet and the emitting time of the bullet, and the reasonable str ucture of the head of the carrier and bullet were designed, then the intensity of the head of the carrier was checked out using of the software of ansys
本文首先對子母式穿甲彈總體參量作了全面的計算分析,其中主要分析了子彈射出的彈道位置和必要的子彈著
靶速度,論證了子母式穿甲彈對付爆炸式反應裝甲的可行性,然後對子母式穿甲彈彈頭部進行了總體設計,其中主要對子彈的發射過程進行了詳細的分析,得出了母彈彈頭部發射
孔內閉鎖環厚度與子彈飛離母彈速度的關系、子彈長度與子彈飛離母彈速度的關系、子彈長度與火藥燃燒率的關系、子彈長度與母彈彈頭部發射
孔內最大壓力的關系以及子彈的長度與子彈發射所需時間的關系,設計出了合理的母彈彈頭部結構和子彈的結構,並利用ansys有限元分析軟體對母彈彈頭部的強度進行了校核。
Jet impingement cooling is an advantage method in heat transfer enhancement owing to its extremely high local heat transfer coefficient and simple structure. as regard as the combustor flame tube cooling structure is concerned, the impingement - converse convection - film composite cooling is an effective method, in this composite cooling structure, the impingement cooling problem could be modeled as impingement inside semi - confined channel
對于沖擊-逆向對流-氣膜復合冷卻的火焰筒結構而言,火焰筒壁面冷氣側的沖擊冷卻實質上是半封閉通道的沖擊冷卻,即沖擊射流從沖擊
孔板噴出,沖擊到換熱
靶面后形成壁面射流沿通道單方向流出。
The edge detection approach based on cp neural network is valid to overcome the randomness of fragment dispersing and complexity of distribution of perforation holes. applying neural network approach, the influence of the negative factors is reduced in artificial detection and statistics. in this way, the target image was detected exactly and successfully
基於cp神經網路的邊緣檢測方法有效地克服戰斗部破片穿
靶試驗中破片飛散的隨機性和破片
孔分佈的復雜性,從而減小了人為檢測和統計中諸多不利因素的影響,完成對
靶板圖像的準確檢測。
Studies show men are better at hitting 6 ) targets and 7 ) solving math problems while women are better at 8 ) memorizing words and 9 ) recognizing faces
研究顯示男人較擅於射中標
靶和解決數學問題,而女人則比較擅長記憶文字和辨識臉
孔。
It is found that starch microgel has microporous network structure and environmental responsiveness, moreover, its volume phase transition temperature ( tc ) is around 37, which are researched by the characterization of tem, dls, light refraction and other techniques. so, starch microgel with those advantages can be expected to use as a targeting drug carrier
藉助透射電鏡、動態光散射、光折射等技術的表徵,發現所制備的澱粉微凝膠具有微
孔網路結構和環境敏感性,而且相體積轉變溫度( t _ c )約37 ,所制澱粉微凝膠的這些優越性可望作為
靶向藥物載體。
Firstly, for jet array impingement cooling, the effects of the distance of adjacent holes, the impinging distance and jet reynolds number on heat transfer characteristic at the target wall are summarized under staggered holes arrangement and the same hole diameter. and then, the numerical simulation of inclined multi - hole film cooling has been studied. the influence factors examined in this case include blowing ratio and the distance of adjacent holes
首先通過對射流沖擊冷卻方式的研究,分析了相鄰
孔間距、沖擊間距以及射流入口雷諾數對沖擊
靶面換熱系數的影響情況,然後對多斜
孔冷卻方式進行了數值模擬,重點探討了吹風比和相鄰
孔間距對絕熱溫比與壁面換熱系數的影響規律,最後,針對沖擊-發散復合冷卻流場的計算物理模型,研究吹風比、相鄰
孔間距的變化對沖擊-發散復合冷卻流動與傳熱特性的影響。
The shooting method, sub and super solution method, and fixed point theorem were used to study a class of nonlinear diffusion equations with nonlocal boundary value condition in perforated domains
摘要利用打
靶法、上下解方法和不動點定理等工具,研究有
孔區域上一類具非局部邊值條件的非線性擴散方程。
Sobel edge operator was used to extract the edge contours of two - valued gray level image as the raw sample data, simplifying the test data, and reserving the original characteristics of test data, discontinuity of perforation boundary
Sobel邊緣運算元在提取二值灰度圖像的邊緣輪廓作為目標
靶板的原始樣本數據的過程中,在簡化試驗數據的同時,成功地保留了原有試驗數據的特性? ?
孔邊界的突變性。
Specifications for making quality control targets for testing shaped charges of well
油氣井射
孔彈檢驗用質量控制
靶製作規范
To ensure the beam quality reach the requirement of high efficiency third harmonic conversion and small focal spot size, the correction of wave - front aberration had to be considered in the design of high power solid - state laser facility
在高功率固體激光系統總體設計中,為了使光束質量滿足高效率三倍頻和小
孔進腔打
靶的要求,必須對激光的波前畸變進行校正。
Trend analysis of shaped jet on concrete target jet hole
聚能射流侵徹混凝土
靶射
孔形狀變化趨勢分析
Carbon nanotubes were separately synthesized by a new pulsed laser ablation ( pla ) for in - situ growth method and cvd support method in this paper. ft - ir, uv - vis, xfs, laman, tem, xrd, bet methods were used to characterize the sol, carbon nanotube and other products in the experiment. in the pla method, the sols containing carbon nanotubes were successively obtained by using 1064nm pulsed laser to ablate the interface of fe / c, or ni / c targets and ethanol under common temperature and pressure, and then carbon nanotubes were directly acquired by evaporating the ethanol
脈沖激光轟擊原位生長法是在常溫常壓下使用1064nm波長的脈沖激光轟擊目標
靶與乙醇流動相的固液界面來連續制備含有碳納米管的溶膠,進而除去乙醇相得到碳納米管,其中目標
靶為石墨與fe 、 ni等金屬催化劑混合壓製成的
靶片; cvd基體法是使用自製的六方介
孔mcm - 41多
孔材料為基體,負載fe催化劑活性組分,通過cvd法催化裂解c2h2來生長碳納米管。
Analysis on the plugging model of concrete targets struck by rigid projectiles
混凝土
靶板沖塞型穿
孔模型研究
And draft the on - the - spot experiment through the indoor experiment, every parameter of the lead impeller nozzle such as efflux pressure, target distance, attack time parameter to hole influence is analyzed
通過室內實驗和擬現場實驗,設計內導葉輪噴頭,分析內導葉輪噴頭各參數及射流壓力、靶距、打擊時間等參數對鉆孔作業的影響。