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翼尖装置由于其良好的气动特性在航空界得到了广泛应用,然而它也使飞机的颤振及结构重量特性发生了变化。为了探求翼尖装置的综合特性,利用数值模拟方法对大型客机上最先进的3种翼尖装置(融合式、鲨鱼鳍式和阶梯式)进行了气动、颤振及重量3个方面的综合研究。3种翼尖装置减阻效果明显,但同时结构重量亦增加。翼尖装置均降低了机翼颤振速度。研究结果表明:加装翼尖装置后机翼颤振形态取决于翼尖装置的形式。相对于机翼颤振速度,翼尖装置形式对机翼颤振速度的影响是小量(1%～7%),且翼尖装置减阻和机翼压心外移的综合重量增益,为机翼结构设计提供了一定的设计空间。
Wing-tip devices are widely used in the aviation community due to their good aerodynamic properties, however, they also change the flutter and structural weight characteristics of aircraft. In order to explore the comprehensive characteristics of the wingtip device, the aerodynamic, flutter and weight aspects of the three most advanced wingtip devices (fusion, shark fin and ladder) on large passenger aircraft are studied by numerical simulation . Three kinds of wingtip device drag reduction effect is obvious, but at the same time structural weight also increased. Wing tip devices reduce wing flutter speed. The results show that the wing flutter behavior depends on the shape of the wingtip device. Compared with the flutter speed of the wing, the impact of the wingtip device on the flutter speed of the wing is a small amount (1% ~ 7%), and the combined weight gain of the wingtip device drag reduction and the pressure center of the wing is Wing structure design provides a certain design space.