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对于复合材料后掠翼机翼,扭转发散问题一般并不突出,其操纵面的操纵效率和颤振临界动压是比较关心的两个问题。文章采用COMPASS软件,对某复合材料后掠翼飞机进行了操纵效率分析,并重点计算了该机在不同高度下颤振速度随马赫数的变化情况,详细分析了机翼振动、颤振特性随蒙皮不同铺层比变化情况。结果表明,舵面操纵效率随着马赫数的增加而降低,飞机设计要通过设计参数调整选择合适的副翼反效动压与扭转发散动压之比,使飞行范围内的操纵效率尽可能高;同时复合材料后掠机翼的弯扭耦合效应相当突出,而复合材料剪裁可以调整0°、±45°、90°铺层比例,提高结构扭转刚度,从而提高飞机颤振速度。
For composite swept wing, torsion divergence problem is generally not prominent, its control surface manipulation efficiency and flutter critical dynamic pressure are more concerned about two issues. In this paper, COMPASS software is used to analyze the maneuvering efficiency of a composite swept back wing aircraft. The chatter vibration speed at different heights is calculated with Mach number. The characteristics of wing vibration and chatter are analyzed in detail Variety of different skin layer changes. The results show that the control efficiency of the control surface decreases with the increase of the Mach number. The design of the aircraft should be based on the design parameters to select the appropriate ratio between the reaction force and torsional divergence pressure, so as to make the operating efficiency in the flight range as high as possible At the same time, the bending-torsional coupling effect of the composite swept wing is quite prominent, while the composite material tailoring can adjust the ply ratio of 0 °, ± 45 ° and 90 ° to improve the torsional stiffness of the structure and improve the flutter speed of the aircraft.