摘要：A new passive adaptive shock absorber of the landing gear with double-cavity and dual-damping is studied. Its mathematical model and the virtual prototype are established based on the dynamics simulation software ADAMS. The landing dynamic characteristics and the effect of the parameters on the proposed adaptive shock absorber are analyzed. The results show that the proposed adaptive shock absorber has the slightly better landing performance at the normal load case and much less overload at the crudely landing case than the shock absorber with single-cavity and variable orifice. It also can be concluded that the overload of the proposed adaptive shock absorber can be reduced through increasing the volumes of both cavities or decreasing the pressure of the high pressure cavity or increasing the pressure of the low pressure cavity.

摘要：landing CENTER潮库,一家专售海外潮品的著名买手店。项目之初,是为这家海淘买手店做新形象定位,海淘如鸿雁传书,联想到鸟,于是便将主题定为飞翔的轨迹。曲线是四面而来的,无定向串联起悬挂其中的服饰。灯光是运动的,在服装上腾挪,形成动态的耀眼光斑。我们将雕塑艺术引入道具设计,让所谓潮流不停留于表象层面。

摘要：The main advantage of tail-sitter unmanned aerial vehicle (UAV) are introduced. Three design solutions of rotor tail-sitter lift system of UAV have been presented and the respective control strategies and characteristics of three solutions are also analyzed in the paper, through the related experiments the design of twin-rotor lift system is verified, and its feasibility is proved. The characteristics and the applying background of the twin-rotor tail-sitter UAV are described in detail. Some useful conclusions of the lift system for tail-sitter UAV are obtained.