stage-two engine 中文意思是什麼
stage-two engine
解釋
第二級發動機-
In this thesis, based on pershing ii surface to surface missile, a new kind of ballistic missile was designed with an additional rocket engine, which can be ignited twice. firstly, aerodynamic computational models of missile body and warhead which reentry with supersonic are built according to the task requirements ; secondly, the propulsion system model of missile is built whose first two stages are solid rocket engines and the third stage is liquid - solid combined rocket engine. the nozzle and the shape of the engine are designed to meet the needs of the populsion project ; thirdly, the trajectory model of the mass point is built and a wavy trajectory is designed & optimized ; finally, the ability of a missile ' s breaking through defence is analyzed
以美國潘興導彈為原型，增加可兩次點火的末級發動機，改裝成具有跳躍能力的地地彈道導彈；首先，根據任務需求，建立了導彈的氣動模型，並建立了彈頭再入時高超聲速氣動模型；其次，建立了導彈推進系統模型，前兩級採用了固體火箭發動機，第三級採用了固?液組合火箭發動機，並在總體方案要求下，對發動機噴管和外形進行了設計；第三部分，建立了導彈質點彈道模型，設計了一條跳躍式彈道，並對跳躍式彈道進行了優化設計；最後，對導彈進行了突防能力分析，從分析的結果可以看出，跳躍式彈道的突防能力比常規的拋物線彈道要強。 -
Based on an engineering background, through numerical simulation of the flow field in the hp turbine of the energy efficient engine ( e3 ), the article research the unsteady flow in a transonic turbine stage, the unsteady phenomena in the stage include the shockwave, wake, shedding vortex, endwall vortex, passage vortex and leakage vortex, etc. there are two shockwaves generated on the vane the tailing edge, one on suction side is named moving shockwave, and name another on pressure side steady shockwave
本文首先對于研究的意義和國內外研究的現狀做了簡要的介紹，再從某工程背景出發，通過對e3發動機高壓渦輪內流場的數值模擬，研究了干涉的周期性的問題，以及渦輪級內常見的非定常現象：激波、尾跡、脫落渦、根腳渦、通道渦、漏流渦。導向器尾緣會出現兩道激波，在吸力面的激波可稱為「運動」激波，壓力面的激波可稱為「定常」激波。 -
Experimental study of stratified mixture control strategies for a gasoline direct injection engine with two - stage injection
電控半直接噴射二沖程汽油機的研究與試驗 -
In this article, a research on how the change of latitude and direction of a solar powered long endurance aircraft effect the received solar power was developed. and on the basis of the car air conditioning, the thermal properties of the single - effect lithium bromide absorption hot - coldwater unit and two - stage lithium bromide absorption hot - coldwater unit applied in car and driven by high temperature cooling fluid of the car engine are advanced and compared. the technique of energetic optimization is employed to investigate the optimal performance of an irreversible hybrid air - conditioning system consisting of a vapor compression refrigerator cascaded with a solar - driver absorption refrigerator
本文對太陽能飛機的飛行緯度和飛行方向對能夠獲得的太陽能輻射量的影響進行了研究，以及對應用於汽車空調的兩種溴化鋰製冷機組，即單效溴化鋰製冷機組和兩級溴化鋰製冷機組進行了熱力分析和研究，同時，結合太陽能集熱器作為整個製冷系統的熱源，對系統的最優綜合性能進行了分析和研究。 -
Modeling and simulation of two - stage expansion air - powered engine
兩級膨脹氣動發動機建模及模擬研究
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