drag-effect 中文意思是什麼
drag-effect
解釋
離子牽制效應-
The drag perturbations have a minor effect on stability criteria.
阻力的變化對穩定性的影響較小。 -
With the ground effect, they own higher lift / drag ratio than general aircraft, so need less thrust power and have the ability to carry more loads or fly longer
在地效的作用下，它的升阻比比一般的飛機大，因而飛行時所消耗的推進功率小，具有更大的載重量或航程。 -
The effect of reynolds number on rudder hydrodynamic performance is also analyzed. up to the stall angle the computed lift and drag agree well with measurements and other author ' s calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under - predicted. the solver is used to investigate laminar and turbulent separated flows around a 6 : 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces
應用所開發的求解器，以naca0015翼型舵為算例計算了船舵在不同雷諾武漢理三;大學博士學位論文數下大舵角范圍內的三維粘性流場及水動力，成功地預報了舵的失速角和最大升力，並初步探討了雷諾數對舵水動力的影響;計算結果與現有試驗和計算數據比較，吻合程度相當好，初步檢驗和驗證了該求解器精確模擬粘性流動和計算水動力的能力。 -
It can be used not only to change the fire precision of the base bleed projectile, but also to improve the effect of reduction drag and expansion range. the calculating model of the secondary expansive pressure of the burning gas is constructed by means of analysis of the experimental resuits, it has been confirmed that the new base bleed unit can be designed, with the secondary expansive principle of the burning gas pressure. the engineering project of a hybrid base - bleed - rocket high - level efficient extended - range projectile is designed, with the secondary expansive principle of the burning gas pressure, the feasibility and the true worth of its engineering applications is validated in theory
本文提出了底排燃氣壓力不隨外部壓力變化，既可改善底部彈射擊精度又可提高減阻效果的二次擴張原理，建立了底排燃氣二次擴張壓力的計算模型，並通過採用二次擴張原理的新型底排裝置與傳統底排裝置的對比試驗，驗證了新型底排裝置結構實現的可行性；完成了基於底排燃氣二次擴張高效增程原理的底排?火箭復合高效增程彈方案設計及其有關計算，從理論上驗證了其工程應用的可行性和實際價值。 -
Several icing parameters were imported to calculate the change of drag coefficient and typical derivatives between clean aircraft and iced aircraft, and the aircraft flight envelope change of iced and un - iced situation was computed, and the small disturbance flight dynamics model was modified to study the effect of the ice accretion on the aircraft dynamics by importing the ice parameter to it, and the longitudinal and lateral stability and the elevator, aileron and rudder step response were also studied and simulated
根據這些參數計算了飛機結冰后阻力系數以及典型氣動導數的變化，並計算了結冰前後飛機的飛行包線；同時對結冰前後飛機的縱向、橫側動穩定性以及升降舵、副翼和方向舵階躍操縱響應進行模擬計算。 -
4. we can classify the enterprise green transition into three kinds by the dominant factor in the push - drag - model, push - dominant mode, drag - dominant mode and friction - tight state. different green policies should give to different transition mode in odor to getting a good green effect
4 、本文建立了企業綠色變遷推拉模型，並根據促使企業綠色轉變的主導因素的不同，將企業綠色變遷的模式分為拉力主導型、推力主導型與摩擦狀態三種類型，不同的類型應採取不同的綠色政策才能收到良好的綠色效果。 -
The results show that the frame of the grid fin has the greatest effect on the grid fin drag characteristics, reducing the drag levels and enhancing the lift - drag ratio for grid fin may be obtained by selecting appropriate frame cross - section shape and thickness of grid fin
計算結果顯示，格柵翼的幾何結構參數對格柵翼的氣動力特性影響很大，格柵翼的邊框剖面形狀和厚度對格柵翼的阻力影響最大，所以選擇合適的邊框厚度和剖面形狀可以有效地減少格柵翼的阻力，提高陞阻比。 -
Effect of center - of - gravity position on aircraft drag and flight performance
重心位置對飛機阻力及其飛行性能的影響 -
The effect caused by the atmospheric drag is investigated also
文中還研究了大氣阻力對衛星編隊飛行的影響。 -
The main results are as follows : 1 ) it is a obvious effect of wave on the wind drag coefficient. the wind drag coefficient can be add up to 1. 5 times of origin value when we consider the wave effect on the drag coefficient. it also has changed the sea level
主要成果如下： 1 、波浪對表面拖曳系數的影響是明顯的，特別是在浪大的時候，拖曳系數可以增大到原來的1 . 5倍；拖曳系數的改變也改變了水位場，在a點引起的增水量級值得人們注意。 -
The effect of mesh - addition on the turbulence spatial structure of drag - reducing flow
添加篩網對減阻流體湍流空間結構的影響 -
Based on theoretical analysis, microbubble drag reduction is due to structure change of turbulent boundary layer caused by the microbubbles. experiments testify microbubble drag reduction for turbulent boundary layer, as well as bubble size, main flow velocity, etc. affecting the reduction ; with proper flow field model, turbulent model and difference scheme, numerical methods simulate the effect of boundary layer and bubble numbers on dray reduction
理論分析提出微氣泡降阻機理在於其引起湍流邊界層結構的變化；實驗證明了微氣泡對湍流邊界層的降阻作用以及氣泡尺度、主流速度等對降阻作用的影響；數值方法利用適當的流場模型、湍流模型和差分格式，模擬邊界層和氣泡數等對降阻的影響。 -
Event is raised with the drag - and - drop effect specified. for a list of drag - and - drop effects, see the
如果該項是有效的放置目標，則將以指定的拖放效果引發 -
The results are compared with the cases in a single - layer fluid, showing that the density stratification can have a relative large effect on the drag and lift coefficients as well as the vortex shedding
計算受迫振蕩圓柱體的升力系數、阻力系數隨時間的演化曲線和圓柱體的尾渦分佈，以及圓柱體的受迫振蕩激發兩層流體內界面的擾動，並與均勻流體的情況進行了比較分析。 -
Much attention is paid to the effect of perturbations on satellite formation flying and how to decrease the effect, which are studied with the earth oblateness and atmospheric drag considered
攝動因素對衛星編隊飛行的影響以及如何盡量減小攝動影響是應用中非常關心的問題，本文考慮地球扁率和大氣阻力兩種攝動因素，對此進行了研究。 -
In a ship design, one of the key subjects is to investigate the effect of varying the main shipform factors on its drag. in view of that traditional model tests are rather costy and time - consuming, many researchers have been attempting to make, theoretically, numerical analysis with computer
對于船型設計而言，關鍵問題是研究船型要素及其改變對于阻力產生的影響，由於通過傳統的水池實驗方式存在費用高，周期長等問題，許多研究人員正在研究利用計算機通過數值分析方法進行分析。 -
Effect of drag reducing grooved surface on high - order moments in turbulent boundary layer
減阻溝槽表面對湍流邊界層高階矩特性的影響
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