翼下發動機 的英文怎麼說
中文拼音 [yìxiàfādòngjī]
翼下發動機
英文
below-wing engine-
Maintain the market share as the market leader, may take an activity in defense tactics as follows : position defense, flank defense, preemptive defense, counteroffensive defense, contraction defense and mobile defense
作為市場的領先者，在防衛戰略上主要有以下幾方面內容：地位防衛、側翼防衛、先發制人、防守反擊、收縮和機動進攻。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。Later in the war, the hurricane served admirably in north africa, burma, malta, and nearly every other theater in which the raf participated. the hurricane underwent many modifications during its life, resulting in many major variants, including the mk ia, with interchangeable wings housing eight 7. 7mm 0. 303in guns ; the mk iic, with a merlin xx engine ; the mk iid, a tankbuster with two 40mm anti - tank guns plus two 7. 7mm guns
颶風在它的發展過程中有過很多改進，發展出許多重要的變型，包括mk ia ，在翅膀上安裝8挺7 . 7 mm機槍「颶風」 mk iic型，裝備一臺「梅林」 mk xx發動機「颶風」 mk iid ，機翼上安裝兩挺7 . 7 mm機搶並且在機翼下吊掛兩門40 mm反坦克炮。The main aspects of this dissertation are as follows : 1. employing the moving grid technique, a 3 - d moving grid based on the transfinite interpolation is developed. this grid has better adaptation than the deforming grid for flapping wing
本文的主要工作表現在以下幾個方面： 1 、引入運動網格技術，發展了一套基於廣義無限插值理論的適合撲翼計算的三維運動網格，提高了網格對撲動機翼的適應性。The numerical algorithm of solving the adjoint equations for different design cases have been developed by using finite volume methodology which is usually used to solve the flow governed equation. it includes the some important aspects, such as flux formulation, wall and far - field boundary treatment methodology, dissipative term formulation, etc. after the solution of the adjoint equations is obtained, the derivatives of the cost function with respect to all the design variables can be evaluated with the same operation. this can yields a significant saving over the other gradient - based techniques when there are many design variables
（ 3 ）進行了應用控制理論和三維歐拉方程的機翼氣動反設計研究，以及有升力約束情形下機翼跨音速減阻問題研究，分別推導了相應的共軛方程及邊界條件數學表達形式，研究與發展了三維共軛方程的有限體積數值求解方法，及相應梯度公式的數值求解方法，通過對計算網格生成、流場計算、共軛方程數值求解、梯度求解和優化演算法等多方面的有效結合，成功發展了三維機翼的氣動反設計和跨音速減阻優化設計程序，成功地進行了多個設計算例研究。When escape system is activated, the grille wings at the upper fairing will open, supporting frame will pick up the orbit and returning modules, the lock between the returning and propelling modules will release, the lock between the upper and lower fairings will release, escape rocket will be ignited and finally pull the escape flight vehicle away from the rocket
該系統由逃逸塔和上部整流罩組成，逃逸系統加上飛船的軌道艙和返回艙構成逃逸飛行器。當需要逃逸時，上部整流罩上的柵格翼打開，支撐機構夾住飛船軌道艙和返回艙，然後返回艙與推進艙解鎖上下整流罩解鎖逃逸發動機點火，逃逸飛行器飛離運載火箭。Then a real - time quasi - steady turboshaft twin - engined model is founded by simulating the rotor speed fluctuation
為模擬大負載情況下旋翼轉速的波動，建立了雙發準定常渦輪軸發動機實時模擬模型。分享友人