The gear turning propeller has a telescopic function and can complete three different kinds of operation of driving, turning and lifting.
本实用新型的齿轮回转推进器具有伸缩功能，能够完成传动、回转、升降三个不同的操作。
Lifting surface method and non-linear vortex lattice method were used for the calculation of propeller and rudder with additional thrust fins respectively.
对螺旋桨与舵附推力鳍分别采用升力面法和非线性涡格法计算。
Inaccessible areas will be constructed as void Spaces. Eye pads will be provided on port and starboard for lifting rudder and propeller.
不可到达的区域建造成空舱。在船的左右舷安装眼板以方便吊装舵和推进器。
An efficient lifting line method has been developed for computing the performance of propeller.
本文提供了一种能有效计算螺旋桨性能的方法。
A numerical method is presented for prediction of propeller performance and pressure distribution on blade surface according to lifting surface theory.
本文提供了一种根据升力面理论计算螺旋桨桨叶表面压力分布和螺旋桨性能的数值方法。
This new type propeller which fit for various vessels such as tugboat, float lifting boat, excavating boat, ferry boat, flat bottom boat and so on has extensive market prospect and military purpose.
该新型推进器适合于各种工程船舶，例如拖轮、顶轮、浮动起重船、挖泥船、渡轮、作业用平底船等，具有广阔的市场应用前景和军事意义。
Meanwhile the open water characteristics of the propeller were predicted by using the lifting surface theory. Comparison with to experimental data showed that calculation errors are acceptable.
应用升力面方法理论计算螺旋桨切割前后的敞水性能，与试验值的比较表明计算值误差在可接受的范围内。
The propeller blades are calculated by a vortex lattice method, while the pod including its strut by a boundary element method for non-lifting bodies.
螺旋桨采用升力面理论涡格法、吊舱采用面元法分析计算，二者的相互干扰通过叠代计算来处理。
This paper has adopted the lifting-surface method for the prediction of unsteady hydrodynamic performance and cavitation performance of propeller.
本文采用升力面理论预报螺旋桨非定常水动力性能及空泡性能。
A hoisting device is arranged on the transport cart, which saves labor and loading time when transported objects are loaded and the simple propeller lifting device is arranged.
运输车上设置起重吊装设备，在装卸运输物以及简易螺旋桨式吊运装置时，节省人力和装卸时间。
In this paper, a method based on quasi-steady lifting line theory for the prediction of performance characteristics of a propeller working in a non-uniform wake field is presented.
本文应用准定常升力线理论预报船用螺旋桨的性能，建立了适合中型计算机的程序。
In this paper, a method based on quasi-steady lifting line theory for the prediction of performance characteristics of a propeller working in a non-uniform wake field is presented.
本文应用准定常升力线理论预报船用螺旋桨的性能，建立了适合中型计算机的程序。
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