飞机穿越阵风区域时,阵风产生附加气动力,引起飞机的刚体运动和弹性振动。阵风激励干扰驾驶员的正常操纵,降低乘坐品质,增加翼根弯矩,缩短结构的疲劳寿命。近十几年来,高空长航时飞机得到了世界的普遍重视,由于其高空、长航时等性能要求,这种飞机具有特别大的展弦比,大展弦比机翼具有展弦比大(可达到35的量级),结构重量轻,柔性大的特点。因此,设计师更倾向于设计具有大柔度结构的飞行器。然而,随着飞机的柔度增大,其刚体频率 Gusts produce additional aerodynamic forces as they pass through the gust area, causing rigid body movements and elastic vibrations of the aircraft. The gust encouragement interferes with the driver’s normal operation, reduces the ride quality, increases the root bending moment and shortens the fatigue life of the structure. In recent decades, the aircraft in high-altitude long-haul has gained universal attention in the world. Due to its performance requirements such as high-altitude and long-haul flights, the aircraft has a particularly large aspect ratio. The large aspect ratio wing has a large aspect ratio (Up to the magnitude of 35), the structure of light weight, flexible features. As a result, designers are more inclined to design aircraft with greater flexibility. However, as aircraft’s compliance increases, its rigid body frequency