民用飞机阵风载荷及减缓技术的研究

由于民用飞机机翼具有大展弦比的特点,因此阵风载荷经常成为民用飞机飞行载荷的严重情况,是各国适航标准重点考察的飞行情况。而且,阵风干扰还会因飞机机体的自身弹性引起结构弹性振动,使飞机结构刚度降低,造成机体疲劳损伤,甚至引起颤振。因此,在民用飞机载荷设计过程中对阵风载荷及其减缓技术进行研究具有非常重要的意义。介绍了民用飞机阵风载荷的原理及相关技术,以及阵风载荷减缓技术中用直接升力控制方法来实现机翼的阵风载荷减缓。

Research on Gust Load and its Load Alleviation Technology of Civil Aircrafts

Due to the characteristic of large ratio wing of civil aircrafts, gust load often composes of the severe conditions of civil aircrafts. And it must be emphasized by all countries＇ airworthiness regulations. Moreover, owing to the elasticity of the aircraft structure, gust disturbance induces the elastic vibrations, reduces the structure stress, produces the fatigue damage, and even promote flutter. Thus it is of very importance and significance to investigate and research in gust load and gust load alleviation technologies in flight load design. This paper gives a brief introduction of gust load theories and the relevant technologies and also puts forward a type of gust load alleviation of method direct lift control to carry out gust load alleviation of the wing.