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摆线推进器是一种新型的推进器,目前世界上最有声望的摆线推进器就是 Voith-Schneiderpropeller.VSP 机构是该摆线推进器的核心部分。我国研制摆线推进器的工作才刚刚开始,VSP 机构对我们来说还是比较陌生的。本文简要地介绍了摆线推进器机构的发展情况,并指出研究摆线推进器的性能必须与研究机构一道进行。VSP 机构貌似五构件机构,而实际上它是“以双曲柄四杆机构为基础的机构加上一个二支组而形成的可调支座的六杆机构”。文中给出了该机构存在的几何条件及该六杆机构作整周旋转所必须具备的条件。同时,对此机构作了位置分析,导出了为流体动力计算所需要的叶片位置角度计算公式。另外还把 VSP 机构的叶片角与“正统”情况的叶片角加以比较。由此看出 VSP 机构具有控制偏心率大和偏心率随叶片位置变动而变化的特点。
The cycloid thruster is a new type of thruster, and the most prestigious cycloid thruster in the world today is the Voith-Schneiderpropeller, a core part of the cycloid thruster. The development of cycloid thrusters in China has just started, and the VSP institutions are still quite new to us. This article briefly introduces the development of cycloid thruster mechanisms and points out that the performance of cycloid thrusters must be studied in conjunction with research institutes. The VSP mechanism looks like a five-component mechanism, but in fact it is a “six-bar mechanism with an adjustable support formed by a double-crank four-bar mechanism-based mechanism and a two-legged mechanism.” The article presents the geometric conditions of the institution and the necessary conditions for the six-bar mechanism to make full rotation. At the same time, this institute made a position analysis and deduced the calculation formula of blade position needed for hydrodynamic calculation. In addition, the blade angle of the VSP mechanism is compared with the blade angle of the “orthodox” situation. It can be seen from the above that the VSP mechanism has the characteristics of controlling eccentricity and eccentricity changing with blade position.