In order to satisfy the operation requirement of the rated thrust of the propeller, the propulsion motor performs only in rated torque on the low speed, so the motor power is low.
认为以满足螺旋桨额定推力为目的，推进电动机只需要低速输出额定转矩来实现，即输出功率较低。
Marine propeller is a type of free form surface part. Its design and manufacture precision decide ship's thrust efficiency directly.
船用螺旋桨是一类典型的自由曲面零件，它的设计和制造精度直接决定了其推进效率。
Air propeller is the tool which transforms the power of aerial engine to the thrust of aircraft.
空气螺旋桨是把航空发动机的动力转化为飞行器推进力的工具。
Thrust calculation of propeller, rudder, wing, and dynamic response of the whole system are discussed.
讨论了螺旋桨和舵、翼的推力解算方法和整个系统的动力学响应过程。
The advantage of the ducted propeller is, this type propeller can support greater thrust and higher efficiency under low speed, so is the first choice.
导管螺旋桨优势在于低航速时提供更大的推力和更高的推进效率，因此作为首要选择。
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。
These expressions are suitable for calculating the value of the propeller thrust with computer and convenient for the study of the ship 's maneuverability.
所得的回归表达式适用于计算机进行螺旋桨的进、倒车推(拉)力计算，同时便于进行船舶操纵性研究。
Interference of propeller slipstream, changing of propeller thrust and twist with different flight state was took into account.
在建模过程中，考虑了螺旋桨滑流对飞机的气动干扰及不同飞行状态下螺旋桨拉力及扭矩的变化。
The transverse thrust is the sideways force of the propeller as it rotates.
横向推力是螺旋桨的横向效力，因为它旋转。
The thrust and the torque of the contra-rotating propeller has been calculated by this method, and its result is satisfying on the comparison and the analysis with the actual value.
通过该方法计算了对转螺旋桨的推力和转矩，并与实验值进行了比较和分析，其结果令人满意。
It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.
分析认为PPT是一种先进的小推力动力装置，特别适合于微小卫星的轨道转移、姿态控制、位置保持以及星座编队飞行。
The booster for swimming is characterized in that the propeller is driven to rotate by utilizing pedaling force of legs and feet. Thus, the great thrust is generated.
这个游泳助推器就是用腿、脚的蹬力带动螺旋桨旋转，产生较大的推力。
The booster for swimming is characterized in that the propeller is driven to rotate by utilizing pedaling force of legs and feet. Thus, the great thrust is generated.
这个游泳助推器就是用腿、脚的蹬力带动螺旋桨旋转，产生较大的推力。
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