中文摘要：

折叠翼是一种很有前景的变体飞行器设计方案。在折叠过程中，相当于飞机具有多个不同的机翼构型，所以其颤振特性将会发生剧烈的变化。为了提高求解效率，提出用准静态方法代替实时模拟方法来模拟折叠过程，并对折叠翼飞机进行了颤振特性的变参分析。得出了以下两个结论：1）当折叠角进入变体折叠的中间阶段时，机翼的颤振速压降低较大。2）折叠作动器的刚度会明显影响机翼的颤振速压。

英文摘要：

A strong candidate for morphing wing design is the folding wing configuration. In the process of morphing, the flutter properties of folding wing aircraft will change dramatically due to different wing configurations throughout the folding process. To increase efficiency, this process was simulated by a quasi-static method instead of real-time simulation. Parametric studies were performed to analyze the flutter characteristics of the folding wing aircraft. The results show that if the folding angle falls into the middle range of morphing, the flutter speed pressure will decrease and stiffness of folding actuator has an obvious impact on flutter speed pressure of the folding wing aircraft.