锐边突风对大展弦比机翼的气动弹性响应影响  

Aeroelastic response for straight wing with high aspect ratio due to sharp edge gust

作　　者：刘伏虎[1] 马晓平[1] 

机构地区：[1]西北工业大学无人机特种技术国家重点实验室,陕西西安710065

出　　处：《飞行力学》2012年第6期498-501,共4页Flight Dynamics

摘　　要：基于Theodorsen非定常气动力理论,以大展弦比均匀直机翼为研究对象,建立了系统的气动弹性响应方程。选取二阶弯曲和二阶扭转模态,采用V-g法求解了系统的颤振速度。基于Kussner函数,建立了锐边突风系统模型,并推导了在弯曲和扭转模态阶数为Nw和Nα下的系统状态方程,仿真研究了加入突风后系统的气动弹性响应。结果表明,加入突风后翼尖响应振幅增大。Based on Theodorsen unsteady aerodynamics theory,the equation of aeroelastic response for straight wing with high aspect ratio is established.Flutter speed is determined for two bending modes and two torsional modes using V-g methods.The sharp edge gust system model is established and the system state equations are derived with Nw bending modes and Nα torsional modes wing systems based on the function Kussner.The aeroelastic response of system shows that the amplitude oscillation becomes higher.The modeling method may offer reference for research of gust response.

关 键 词：气动弹性 颤振 锐边突风 

分 类 号：V211.4[航空宇航科学与技术—航空宇航推进理论与工程]