水面仿生矢量推进器倒车性能分析.

For the complex astern moving structure of amphibious platform arid its performance study, a new mode of astern moving is presented based on the water-surface hionic vector propeller, and a new amphibious platform is designed. Thr straight astern moving of 0. 7 m/s and the astern steering of small-radiiiH of about 0. 75 rn an; realized by rotating the propeller reversely. A fluid dynamics model of propeller is set up lo analyze the influences of height, spoke length, rotational velocity and blade angle on three-dimensional output performance of astern moving with periodic output. So the study of the flow due to rotating of flat plates is further enriched. And the calculation model is validated hy usin^ the open water test system of vector propeller. The results show that the turning moment decreases with the increase m height lit pmpfller axle; the down push Force and drag force arc linear with the spoke length, and the turning moment is quadratic functions lo spoke length; and three-dimensional driving outputs increase with the increase in rotational velocity of propeller. [ABSTRACT FROM AUTHOR]