Variable Vector Propeller ( VVP) is a new type thruster, which can be used to provide forces in any directions by adjusting pitch angle periodically. 全方向推进器是一种新型的推进装置,它最大特点是通过叶片螺距角在桨叶旋转的过程中周期性的改变可以产生任意方向的力。
Experimental results show that: The propeller pitch angle was an important parameter in wind turbine, which had great impact in aerodynamic characteristics of the wind turbines. 实验研究结果表明:在风力机设计中,桨距角是一个重要参数,其对风力机气动特性有较大影响。