Lateral-Direction Aerodynamic Characteristics and Forebody Strake Control of an Aircraft Undergoing Pitching Oscillation on High Attack Angle 飞机大迎角俯仰运动下的横侧向气动特性及被动控制
The maximum lift coefficient could be raised by30%. It has been shown that moving surface is an excellent technique to control separated flow over the strake wing. 结果表明,在这种机翼上转动前缘对控制分离是有效的,升力增量最大可达30%。
The valve is driven directly by a large strake multilayer piezoelectric stack, its displacement actuates the power cascade spool after amplification by a lever mechanism. 该阀采用大行程的压电叠堆作为驱动元件,经杠杆放大后的位移直接驱动功率级滑阀。
'Divine Strake'-testing for Iran? 简氏:“神圣列板”-测试为了伊朗?
With symmetric forebody strakes or single strake and by varying size and mounting location of the strake, the optimum control scheme of asymmetric forces could be found. 通过边条的对称或单侧布局和匹配边条不同的大小与安装位置,可以找到非对称力的最优控制方案。
An experimental study of the effects of the twin vertical fins position and twist strake wing on a fighter aerodynamic characteristics was performed in the wind tunnel. 针对边条弯扭及改变双立尾展向位置对全机纵横向气动特性的影响进行了试验研究。
The required control forces and moments can be obtained using strake control techniques. 采用边条控制技术,可获得所需要的控制力与控制力矩。
The fixed strake and strake flap will also improve the lift-drag characteristics at medium angles-of-attack, the hinged strake and strake flap will raise the stall behavior. 固定边条和边条襟翼还可改善中小迎角的升阻性能,链接边条和边条襟翼则可使失速性能提高。
Experiments show that the adaptability of the self-organized fuzzy controller works very well in different work condition, and can realize variable cushioning strake. 实验结果表明,自组织模糊控制器对不同的工况有较强的适应性,并实现了可变的缓冲行程。
Some unusual control surfaces such as spoiler, clam-shell aileron, body-nose strake, movable wing-tip are investigated on two typical configurations. 在两种典型布局上研究了扰流板、开裂副翼、机头边条、活动和偏转翼梢及舵面的方向控制特性。
Results indicate that the strength of the strake vortex increases with a quadric function of the attack angle and the type of vortex breakdown is spiral breakdown in this experiment. 实验结果表明边条涡强度随攻角呈平方关系增长,边条涡的破碎形态为单螺旋破碎。
This paper gives a review on the technical development of spar platform, including the research on dynamic response, mooring system, fatigue and coupled analysis and the design of heave plate and strake configuration. 本文介绍Spar平台的发展趋势及其关键技术的研究,包括平台动力响应、系泊系统、疲劳分析、耦合分析以及垂荡板和侧板的设计研究。
Optimum computation of relative circumferential position of stay vanes to guide vanes of hydraulic turbine A miniature strake attached to the nose tip of the model can be moved to different circumferential position. 水轮机固定导叶与活动导叶周向相对位置的优化计算根据以上观察,在模型头部安装了微型摆振片,该摆振片可以处在不同的周向位置。
Research on the Low Speed Aerodynamic Characteristics of an Aircraft with a Small Strake and Controlling Separation at the Outer Part of Its Wing 一种小边条飞机的低速气动特性及其外翼分离控制研究
Investigation on the Improvement of Stabilities of Combat Aircraft with Strake Wing Configuration 边条机翼布局战斗机稳定性改进研究
An Experimental Investigation on Properties of Strake Vortices Using Particle Image Velocimetry 用粒子图像测速法研究边条涡的性质
Pressure and velocity fields of spatial cross section on an aircraft model with strake wing and double vertical tails were measured using a seven hole probe. 采用七孔探针对一种边条翼双垂尾布局的飞机模型进行了空间压力场和速度场的测量。
Some measures improving the longitudinal and lateral stabilities of combat aircraft with strake wing configuration are discussed. 对边条机翼布局战斗机的纵、横向稳定性改进措施进行了研究。
A Big Cheater Research on the Strake Wing Vortex Lift of Flighter at High Angle of Attack 战斗机边条翼大迎角涡升力研究
Using strake vortex to reduce the distortion of a Y shaped inlet 利用边条涡抑制Y形进气道流场畸变
Application of Forebody Strake Control Technology 前体边条控制技术应用
Combined with the examples of structure, it also makes recommendations for the strake installation. The result can be achieved to reduce VIV of the purpose of fatigue damage and was able to meet the requirements of the fatigue life. 并且结合本文实例,对螺旋导板的安装提出了建议,可以达到减小涡激振动疲劳损伤的目的,又能够满足疲劳寿命的要求。
Based on engineering computations, a reliable aerodynamic calculation method which combined with theoretical research, empirical formulas and the experimental curves was established to calculate the aerodynamic forces of some new strake wing layout projectiles and rockets weapons. A program was compiled with the method. 本课题以工程算法为依据,针对部分边条翼布局的新型弹箭武器,在理论研究的基础上结合经验公式和实验曲线确定一种可靠的气动力计算方法,编制了弹箭气动力计算程序。