非定常气动力,unsteady aerodynamics
1)unsteady aerodynamics非定常气动力
1.Volterra-series-based reduced-order model forunsteady aerodynamics;基于Volterra级数的非定常气动力降阶模型
2.Volterra series based transonicunsteady aerodynamics modeling;基于Volterra级数的跨音速非定常气动力建模
3.Fuzzy logic modeling of nonlinearunsteady aerodynamics;非线性非定常气动力的模糊逻辑建模方法
英文短句/例句
1.The Unsteady Aerodynamic Characteristics of a Wing Above Sea-Waves;风浪扰动中机翼的非定常气动力特性
2.UNSTEADY AERODYNAMIC MODELING AND IDENTIFICATION OF AIRPLANE AT HIGH ANGLES OF ATTACK飞机大攻角非定常气动力建模与辨识
3.Unsteady Flow Calculate on Using Cartesian Grid基于笛卡尔网格的非定常气动力计算
4.Reduced Order Model for Unsteady Aerodynamics and Its Application;非定常气动力降阶模型及其应用研究
5.Unsteady Aerodynamics and Aeroelastic Analysis Based on Volterra-Series;基于Volterra级数的非定常气动力和气动弹性分析
6.Stability Simulation of Unsteady Aerodynamic Based on Large-amplitude Motion;基于大振幅运动非定常气动力的稳定性仿真
7.Impact Analysis of Unsteady Aerodynamic Force on Flight Dynamics Characteristics非定常气动力对飞行动力学特性影响分析
8.CVR METHOD FOR IDENTIFICATION OF NONSTEADY AERODYNAMIC MODEL识别非定常气动力模型的初脉冲耦合振动法
9.Transonic Unsteady Aerodynamics and Flutter Computations for Complex Assemblies;复杂组合体跨音速非定常气动力和颤振计算
10.Aerodynamic Computation of 3-D Unsteady Euler Equations for Wings with Control Surface;三维带操纵面机翼Euler方程非定常气动力计算
parative Evaluation of Unsteady Aerodynamic Mathematic Models of Aircraft飞行器非定常气动力数学模型的对比分析
12.Study on Unsteady Aerodynamic Force of Morphing Joukowski Airfoil可变形儒可夫斯基翼型非定常气动力的研究
posing and adding effect of rotor blade unsteady aerodynamic force转子叶片表面非定常气动力的构成及叠加分析
14.Unsteady Transonic Flow Computation for a Wing with Control Surface Deflections by Euler Equations跨声速机翼操纵面非定常气动力Euler方程计算
15.Numerical Simulation of Aeroelasticity Basing on Indentification Technology of Unsteady Aerodynamic Loads基于非定常气动力辨识技术的气动弹性数值模拟
16.State Space Model of Unsteady Aerodynamics and Its Applicationto Aero-servo-elasticity非定常气动力状态空间模型及其在气动伺服弹性建模中的应用
17.THE AFFECTION OF INTERBLADE PHASE AnGLE IN OSCILLATING CASCADE ON UNSTEADY AERODYNAMIC FORCE振动叶栅叶片间振动相位差对非定常气动力的影响
18.Stability and Coupling Characteristics of Elastic Vehicle Acting with Unsteady Aerodynamic Forces非定常气动力作用下弹性飞行器的稳定性及耦合特性
相关短句/例句
unsteady aerodynamic force非定常气动力
posing and adding effect of rotor bladeunsteady aerodynamic force转子叶片表面非定常气动力的构成及叠加分析
2.5-stage compressor was performed using NUMECA software,the simulation was focused on the influence of the relative circumferential position of the IGV and the stator blade on the rotorunsteady aerodynamic force and the surface pressure coefficient profile.5级压气机中的时序效应现象,研究了导叶-静子周向相对位置变化时中间转子叶片表面非定常气动力及压力系数的变化。
3.Theunsteady aerodynamic force and the unsteady wind-tunnel wall pressures for two delta wing (70°) models oscillating in pitch to very high angle of attack are measured in a 3 m scale wind tunnel.在模型运动过程中测量模型的非定常气动力和风洞洞壁上的非定常壁压。
3)unsteady aerodynamic非定常气动力
1.The special additiveunsteady aerodynamic using in T-tail flutter is investig.重点研究了T型尾翼颤振计算中特殊的附加非定常气动力,建立了T型尾翼非定常气动力和颤振分析方法。
2.<Abstrcat>In order to satisfy the calculation need of Electrical Controlled Rotor(ECR, or so-called swashplateless rotor), a syntheticunsteady aerodynamic model in time domain is presented to predict the aerodynamic force and moment of the airfoil with a trailing-edge flap.为满足电控旋翼的气弹分析需要,给出了带襟翼翼型的综合时域非定常气动力模型,该模型可以计及襟翼移轴补偿的影响。
3.Based on the nature vibrational characteristics of the flat wing calculated by finite element method, generalizedunsteady aerodynamic forces matrix induced by the wing deformation is gotten by using strip theory, and thus the flutter model equation of the single wing is given.文中提出了一种分析亚音速下弹翼颤振临界速度的工程计算方法,其中弹翼的固有振动特性用有限元方法计算,利用片条理论计算弹翼变形诱导的广义非定常气动力矩阵,从而得到单独翼的颤振模型方程。
4)unsteady aerodynamics非定常空气动力
1.According to the wind tunnel test data of the large-amplitude motion,the algorithm to solve fuzzy-logic model using inunsteady aerodynamics model in the recent years was modified,to increase the speed of modeling and the precision fo the model.以模型大振幅运动风洞试验数据为依据,对近几年来非定常空气动力建模中常用的模糊逻辑建模方法进行改进,使得建模速度更快、模型精度更高。
5)unsteady aerodynamic非定常空气动力
1.First, through improving the algorithm to solve fuzzy-logic model using inunsteady aerodynamics model in several years, make the speed of modeling faster and the precision higher; Second, the dynamic derivate simulating method is adopt to obtain the roll damping derivative of the model rolled around the body coordinate axes; Third, roll stabil.第一,对近几年来非定常空气动力建模中常用的模糊逻辑建模方法进行改进,使得建模速度更快,模型精度更高;第二,采用动导数仿真方法,获得模型绕体轴的滚转阻尼导数;第三,运用单自由度滚转运动方程,研究模型滚转稳定性。
6)unsteady aerodynamics非定常气动
延伸阅读
非定常空气动力学研究物体相对于空气的运动随时间变化时物体的空气动力变化规律的学科。20世纪代初，从多起飞机坠落事故中人们认识了气动力、弹性力和惯性力三者的耦合现象──机翼颤振(见气动弹性力学)，非定常空气动力学也随之开始发展。1924年导出二维振荡平板非定常升力的第一个数学表达式，到了30年代末，二维振荡机翼非定常气动力的理论已趋于完整，奠定了这一学科的基础。第二次世界大战中,飞机的速度接近了音速,同时导弹也问世了；除颤振外，又出现了像飞机抖振、弹道导弹的地面风载、发动机的喷流噪声等新的气动弹性现象，使非定常空气动力学的研究内容得到了扩充。60年代以后，尤其是电子计算机的迅速发展，振荡机翼非定常气动理论得到了新的突破,即从二维发展到三维,由亚音速进入到跨音速和超音速，由单独翼面而计及多部件气动干扰（如机翼与外挂物、机翼与尾翼等）。非定常空气动力按其特征可分为三类：① 振荡型：运动特性随时间呈周期性变化。如飞机的颤振、嗡鸣和动导数，弹道导弹的地面风载等。② 瞬变型：运动特性随时间呈非周期性的突然变化。如飞机进入锐缘阵风、机动飞行和舵面偏转运动等，尤其是导弹在飞行过程中速度和姿态不断地改变，对它作飞行动力学分析时，需要在气动力中计入瞬变效应。③ 随机型：运动或流动特性随时间呈不规则的随机性变化。如因飞机的失速、抖振、飞行器表面激波振荡引起的压力脉动、湍流尾迹、喷流噪声等。这类问题与前两者不同，需要用统计方法研究。非定常气动力问题的分析方法一般分为两类：频域分析和时域分析。前者用于计算振荡型运动，例如60年代后随着计算机发展而建立的各种线化非定常升力面数值解法，包括核函数法及有限基本解法等，随机型的功率谱方法也属于这一类;后者适用于计算瞬变型运动,例如特征函数法和时间历程法等。频域与时域分析可以通过傅里叶变换互相转化。在非定常粘性流方面，已采用一些经验方法来分析激波－边界层的弱干扰，并可预示飞机抖振发生的边界点和定性地揭示飞机失速的现象。由于理论方法的局限性，大量的非定常气动力问题需要靠试验来解决。非定常气动力试验包括测力、测压、流场显示和测响应等。响应测量方法是通过测出系统响应的时间历程（即随时间的变化过程），再采用参数识别方法得到所需的气动力系数。
