尾部發動機 的英文怎麼說
中文拼音 [wěibùfādòngjī]
尾部發動機
英文
rear engine-
Flying boat is a controllable aircraft that can flying in the air, the flotage provided by the helum - filled bag inside the flying boat can support the boat and it s load in the air, motor pushing it forward ; the direction is guided by the device on it s tail, going down of the boat is made by escaping the gas inside, it can rise or fall straightly or stay in the air, no necessity of special site for taking off
飛艇是一種可操縱的浮於空中的飛行器。在飛行中主要依靠內部充滿氦氣的氣囊提供的浮力，將飛艇及其載荷支持在空中，發動機為其提供前進的動力，通過操縱尾翼上的升降舵和方向舵控制飛艇的俯仰和方向運動，飛艇的下降是通過排放氣來實現的。飛艇可以垂直起降空中懸停，不需要有專用設備的起降場。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Television pictures showed that three tiles had vanished from the right side of the rear engine cover.
電視畫面表明，有三塊瓦片從尾部發動機艙蓋右側脫落。Structural matching is a main approach for on - line chinese character recognition. in order to reduce its great computational comple xity and improve its performance, people have been seeking for a way to guide the whole matching by the result of partial matching. in this paper, the authors prop osed 45 basic components from 3, 755 categories of the daily - used chinese charac ters to guide the stroke segment matching. because they always locate at either the beginning or the end of the stroke segment string, these components are easy to extract and separate from other parts of the character. besides, the reference templates of these components are dynamically extracted from the reference segmen tstring and dependent on the current matched character so that a more accurate matching is carried out. experiments show that the segment matching computation h as reduced almost 50 %. the approach is also enlightening for other similar object matching problem
結構匹配是一種有效的聯機手寫漢寫識別方法，為了減少匹配運算，人們一直在尋求利用部分匹配的結果來引導整體匹配的方法.在特徵匹配與結構匹配綜合的基礎上，從3 . 755個一級國標漢字中提取出45個子結構，利用它們來引導結構匹配.由於這些子結構總出現在字首或字尾，因而對它們的檢測比較容易.同時，通過建立子結構活動模板及設計子結構動態抽取演算法，使得子結構匹配的準確度得到很大提高.實驗結構表明，該方法使結構匹配的運算量減少約50 % ，並對類似的物體識別問題有一定的啟發意義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。Based on the mechanism of slipstream interaction, described in this thesis is firstly the interaction of the propeller slipstream with the wing 、 fuselage and horizontal tail. subsequently, the changes in lift 、 drag and pitching moment are derived, giving an engineering model for the prediction of the increments in the aerodynamic characteristics caused by the interference between the propeller slipstream and the other parts of aircraft. this method offers a powerful means to the calculation of the aerodynamic interaction between the propeller and the aircraft, providing reliable data for the design of and aerodynamic calculation on propeller - powered aircraft
本文以滑流干擾的機理為出發點，研究了螺旋槳滑流與飛機機翼、機身、平尾組合體之間的相互影響，推導出滑流引起的飛機升力、阻力和俯仰力矩的變化，給出了滑流干擾對機體氣動特性影響的工程估算方法，為研究螺旋槳與飛機部件之間的相互干擾提供了有力的工具，為以螺旋槳發動機為動力的飛機的設計和氣動計算提供可靠的依據。Some technical problems concerning the development of end burning motors, such as low takeoff acceleration, long tail - off duration and interface debonding of the stress relief flap etc are analyzed and some appropriate measures are put forward. the measures have been proved to be suitable and valuable for improving the motor performance
就貼壁澆注的端面燃燒發動機容易產生的起動加速慢、工作拖尾時間長及尾端部人工脫粘層（蓋層）粘接脫粘等技術問題進行了分析，提出了適用的解決辦法，這些方法已被實踐證明是有效的，對提高發動機性能非常重要。Abstract : some technical problems concerning the development of end burning motors, such as low takeoff acceleration, long tail - off duration and interface debonding of the stress relief flap etc are analyzed and some appropriate measures are put forward. the measures have been proved to be suitable and valuable for improving the motor performance
文摘:就貼壁澆注的端面燃燒發動機容易產生的起動加速慢、工作拖尾時間長及尾端部人工脫粘層（蓋層）粘接脫粘等技術問題進行了分析，提出了適用的解決辦法，這些方法已被實踐證明是有效的，對提高發動機性能非常重要。The project based on the present level of technology to control exhaust of car, and the shortage application for cool egr in our country, aimed to research a kind of cool egr system which could adjust egr temperature automatically according to different working conditions of internal combustion engine. so the intelligent cool egr would be realized to decrease nox from car, which can satisfy the roul of low emission in our country
本課題基於我國當前汽車排放技術相對落後的現狀，針對我國現階段汽車發動機冷卻廢氣再循環（ egr ）應用較少的問題，研製開發出一種能根據發動機不同工況調節egr冷卻溫度的外部冷卻egr系統，以實現冷卻egr的智能控制和精確控制，減少汽車尾氣中nox的含量，滿足國家的排放法規，減少汽車尾對環境的污染。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。The influence of tail grain configuration on the ignition pressurization of a small - scale solid rocket motor
小型固體發動機尾部藥型對點火升壓過程的影響分享友人