attack angle 中文意思是什麼
attack angle
解釋
沖角-
The report takes account into the influence of foreshore and shallow foreshore, roughness, slope, berm, wave attack angle, vertical wall and so on
報告給出了復雜斷面上波浪爬高和越浪量的計算公式，計算中考慮了前灘、邊坡糙率、邊坡坡度、平臺、波浪入射角以及豎墻等因素的影響。 -
Fluent was used to simulate the flowfield of 3 - d complex flowfield of rocket - missile with wings and empennages induced by the interaction by base jet and the flow around the body. in order to study the complex flow problem above, numerical simulations were performed under the following kinds of flow conditions : ( l ) flow of rocket - missile with wings disturbed by supersonic upstream flow. ( 2 ) flow of rocket - missile with wings disturbed by supersonic upstream flow with attack angle
為了研究以上復雜流場考慮了如下幾種情況： （ 1 ）帶彈翼彈箭超音速無攻角繞流； （ 2 ）帶彈翼彈箭超音速有攻角繞流； （ 3 ）帶彈翼彈箭亞音速有攻角繞流； （ 4 ）帶彈翼彈箭超音速有攻角繞流噴流干擾； （ 5 ）帶彈翼尾翼彈箭超音速有攻角繞流； （ 6 ）帶彈翼尾翼彈箭超音速有攻角繞流噴流干擾。 -
Based on the " fangsheng - i " robot fish of harbin engineering university auv lab, at first the analysis of the relations of pectoral fin ' s attack angle and lift in vertical plane is done in this paper, using the robot fish ' s hydrodynamic results by the panel method ' s, then setting up the motion model in vertical plane is done. finally animation the robot fish ' s motion in horizontal plane is finished
論文以哈爾濱工程大學軍用智能水下機器人國防重點實驗室的「仿生? 」號仿魚機器人為對象，利用面元法計算的仿魚機器人水動力結果，並分析了垂直面內胸鰭的攻角與升力的關系，建立了垂直面內的模型，根據軸變形模擬了仿魚機器人水平面內的直航和偏航。 -
Without spinning or attack angle, the three dimensional interaction flowfield over projectile with lateral jets is numerically simulated successfully, and unified interaction flowfield with lateral jets and base bleed is also calculated
在無旋轉、無攻角條件下完成了彈丸側噴三維干擾湍流流場數值模擬，並完成了彈丸底噴流-側噴流共同干擾流場的一體化計算。 -
Three dimensional interaction flowfield over high - speed spinning projectile with lateral jets is numerically simulated in this dissertation firstly. complicated shocks wave patterns is analyzed. several factors concerned such as high - speed spinning, attack angle, base bleed and so on, are studied
本文首次完成了高速旋轉彈丸側噴三維干擾湍流流場的數值模擬，分析了彈丸側噴流場復雜的波系結構，研究了高速旋轉、攻角、底噴等因素對彈丸側噴流場的影響規律，深入分析了旋轉側噴彈丸的空氣動力學特性。 -
The software designed for the system is validated by experiments and proved correct. the system can s imulate the real air - stream and put it on missile ' s wings to make them work under the same force environment as the real spread process, so the relationship of explosive stuff and attack angle can be calculated
本文所設計的監控軟體已通過實際系統的驗證，說明整個系統的設計是合理正確的，能夠真實的模擬力矩，產生一種類似真實氣流阻力的載荷，並將其正確施加於彈翼（尾翼）上，使彈翼（尾翼）能在與展開過程中實際受力相同的狀態下工作。 -
Effect of attack angle messurement error on extracting aerodynamic coefficients
攻角誤差對擬合氣動系數的影響 -
The complicated aerodynamics characteristic of spinning projectile with lateral jets and with attack angle is studied detailedly. the formation and changes are analyzed including magnus force, normal force, yawing moment, pitching moment and pressure center
系統分析了旋轉側噴彈丸復雜的空氣動力學特性，分析了馬格努斯力系數、法向力系數、偏航力矩系數、俯仰力矩系數和壓力中心等參數的產生機理和變化規律。 -
At large attack angle the frequency of the vortex has n ' t a apparent zone of " lock - in ". the fluid - induced vibration at large attack angle belongs to the stable dynamic response problems. but a sudden skip of amplitude will occur at large inlet velocity
在大攻角下分離渦脫落的頻率沒有一個明顯的頻率鎖定區域，流體振動屬于穩定的動力響應問題，但在大來流速度下會出現振幅突跳的現象。 -
Firstly, the airfoil ' s classic flutter ( at small attack angle ), stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed. it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle, where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation. when the attack angle is far from the static stall angle, the vortex will have its own frequency, which differs from the natural frequency, and the flutter has the characteristic of forced oscillation
首先研究了二維翼型的古典顫振（小攻角） 、失速顫振（失速攻角）和動力響應問題（大攻角） ，得到以下結論：在靜態失速攻角附近的一定來流速度范圍內，分離渦會發生頻率鎖定現象，分離流的頻率與固有頻率趨于相同，這時的振動呈現自激振動的特點；遠離失速攻角時分離流頻率則擺脫固有頻率的影響，此時的振動具有強迫振動的特點。 -
Maintaining a forward ground - sole contact point improves directional control and ball flight by reducing the potential of the club to bounce or skip into the ball - especially from closely mown fairways, for players who play the ball forward in their stance or for players who sweep the ball from the turf with a shallow attack angle
藉由降低擊球路徑的潛在負面因素，維持穩定的觸地點能改善方向控制與飛行路徑-尤其是在短草球道上想擊出漂亮直球的球友，或是得利用較淺的擊球角度自長草區擊出的情況下。 -
The precision of the numerical results at a small attack angle is better than that at a big attack angle. it may owe to the approximate kutta condition adopted here
訓一究工作，所得到的結果在小角度斜航時精度要好於作大角度斜航時的精度，這可能因為所采納的kutta條件所導致的。 -
The full flow field characteristics of a supersonic inlet are illustrated at design conditions ; the influence of attack angle on flow field of the inlet is investigated ; b - spline theory is used to model the inlet with attack angle
給出了設計狀態下進氣道內外流場特徵；分析了攻角變化對進氣道流場的影響；以數值模擬結果為基礎，利用b樣條理論建立了反映攻角、馬赫數及可調斜板角度變化的超聲速進氣道數學模型。 -
A hydrodynamic optimal method to enhance the energy conversion coefficient of the vertical - axis variable - pitch turbine is presented in this paper based on the analysis of the existing mathematical models, on the computational methods for predicting the hydrodynamic performance of turbines and on the available experimental results. by applying mathematical optimal theory, a mathematical model for optimizing the hydrodynamic attack angle of the blades of turbines is formulated and some numerical results are obtained as well
本文在總結和研究豎軸可調角直葉水輪機水動力性能計算的現有數學模型，計算方法和實驗結果的基礎上，運用最優化理論，給出了改善和提高該種水輪機能量利用率的一種優化方法，建立了數學模型，並得到了計算結果。 -
The three - dimensional ( 3d ) euler equations are applied to the study of numerical simulation of chemical non - equilibrium oblique detonation wave standing on an accelerating projectile with attack angle
摘要採用三維非定常化學反應控制方程組對駐定在帶攻角高速飛行彈丸上的斜爆轟波流場進行了數值模擬。 -
In the following part, trajectory design and computation are given, including fight scheme and control & navigation laws. through the design and computation, the profile of attack angle, trajectory angle and pitch angle are designed. these works provide theoretical fundamentals for dynamics analysis and practical trajectory design
第三部分內容是對導彈的彈道進行設計與計算，給出導彈在各段的飛行方案或導引規律。設計出導彈在整個飛行過程中的質點彈道，迎角、彈道傾角和俯仰角等參量在導彈攻擊目標過程中的變化規律，為進一步的質點系彈道和動態分析提供理論基礎。 -
Being the nonlinear function of attack angle, the hydrodynamic forces acting upon the submersible are determined by a towing tank test
作用於潛水器上的水動力系攻角的非線性函數，可用拖曳水池試驗加以測定。 -
On basis of the modeling results, the effects of mach number, attack angle and ramp angle on the inlet performance are analyzed
根據此數學模型，分析了攻角和進口氣流馬赫數對進氣道性能的影響，同時給出了斜板對進氣道性能的影響。 -
The load control system has already passed the test ' s validate. it shows that the design of whole system is correct. the system can truly simulate the real air - stream and put it on missile ' s wings to make them work on the same force situation as in the real spread process, so the relationship of explosive stuff and attack angle can be confirmed
本文所設計的加載控制系統已通過實際系統的驗證，說明整個系統的設計是合理正確的，它能夠真實地模擬類似真實氣流阻力的載荷，並施加於彈翼或尾翼，模擬其在真實工作環境下的受力狀態，可以測算導彈攻角與火工品填藥量的關系。 -
At last with the prototype of the vertical - axis cycloid turbine, the optimal method and its mathematical model based on conjugate gradient method are presented in order to enhance the energy conversion coefficient. such optimal results as the energy conversion and the relation between attack angle and azimuth angle are given with particular analysis to sum up the reason of the improved performance of the turbine
最後以豎軸直葉擺線式水輪機為優化原型，提出了一種水輪機水動力性能的優化計算方法，建立了數學模型，運用共軛梯度法進行優化設計，以提高水輪機的能量利用率為目標，給出了優化的葉片攻角變化規律、能量利用率結果，探討了能量利用率提高的原因。
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