aft end 中文意思是什麼

aft end 解釋
船尾端
  • aft : AFT ＝ American Federation of Teachers 美國教師聯合會。adj adv 【航海】在船尾，近船尾，向船尾。 f...
  • end : n 1 端，尖，末端，終點。2 邊緣；極點，極限。3 結局，結果。4 目的。5 最後，死。6 【紡織；印染】經...
  1. Design method for aft - end igniter of small - scale solid rocket motor

    小型固體火箭發動機尾部點火器設計方法
  2. Every few hours the net is hauled up, and the cod - end, holding between 5 and 150 tons of fish, is pulled up onto the trawl deck ( the aft portion of the main deck )

    拖網每幾個小時就要收起來一次，這時網囊里會有5 - 150噸不等的漁獲，然後網囊會被拖到作業甲板上（主甲板靠近船尾的部分） 。
  3. The effects of reynolds number, back surface of nozzle, aft - dome configuration and degree of submergence on aft - end internal flow were studied by both cold gas simulation and numerical simulation. it is showed that the separated flow is sensitive to the change of reynolds number and aft - end cavity configuration

    最後，利用冷流模擬與數值模擬相結合的方法，研究了雷諾數、噴管背壁形狀、后封頭形狀和潛入深度對燃燒室尾部流場的影響，結果表明流動的分離對雷諾數和背壁區幾何邊界的變化很敏感。
  4. For the first time the complex separated flow in the aft - end zone was measured using pdpa technology. the whole mean and fluctuating flow field were obtained

    利用pdpa測速技術首次對燃燒室尾部的復雜分離流動進行了測量，獲得了完整的時均速度和湍流脈動定量數據。
  5. In machinery spaces situated at the aft end ， such engine seating girders are to be carried as far as practicable and the ends effectively supported by web frames or transverse

    例3 :對尾機型船舶，此種機座縱桁應盡可能地向尾延伸，且其端部應由強肋骨或實肋板支持。
  6. Flow details of measurement indicate that the coupling of periodic separated flow ( such as low frequency swinging of separation line ) with nozzle flow may cause aft - end internal flow unsteady. recirculation flow gains more energy from the main flow, at the same time the turbulence intensity increases

    通過對測量結果的分析，我們認為分離流動的周期性（如分離線的低頻擺動）與噴管流動相耦合，會造成燃燒室尾部流動的非穩態效應增強，增加了迴流區從主流中獲得的能量，也加劇了流場的湍流脈動。
  7. Submerged nozzles are commonly preferred in large solid rocket motors. the aft - end internal flows are very complex because of submergence. the flow process and mechanism are not very clear yet

    大型的固體火箭發動機通常採用潛入式噴管，其燃燒室尾部的流動非常復雜，流動過程及其機理尚不十分清楚。
  8. At the preliminary stage of burning the gas flows along the back surface of the submerged nozzle and no recirculation forms in the aft - end cavity. at the medium stage of burning a weak recirculation forms in the rear of aft - end cavity by the force of injection flow. at the end stage of burning the flow separates at the c ombustion channel and a strong vortex forms in the aft - end cavity

    實驗結果表明，在發動機工作過程中隨著燃面的退移，燃燒室尾部的流動會發生很大變化，初始時刻背壁區加質流沿噴管背壁進入噴管，背壁區沒有迴流形成；中間時刻在加質流的驅動下背壁區後部形成較弱的迴流；結束時刻氣流在燃燒室壁面分離，背壁區形成強烈的迴流。
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