Test results provide an important basis for strength design and structural optimization of propeller blades.

为螺旋桨桨叶的强度设计与结构优化提供了重要依据。

The vibration characteristics of propeller blades have been investigated by using experimental modal analysis technique.

本文用试验模态分析技术研究了螺桨桨叶振动特性。

The forced transverse vibration tests of a ship propeller shafting with a variety of propeller blades were carried out on a test bed.

本文论述了在试验台上进行的不同叶片数螺旋桨轴系横向受迫振动实验。

The problems and their occurrence causes in application of SK-25 dryers with sphenoidal hollow propeller blades were presented and analyzed.

介绍并分析了SK 2 5楔形空心桨叶干燥机在使用中存在问题及产生的原因。

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。

The trouble was that at high altitudes where there is less oxygen, the propeller blades had little air to bite and engines still needed oxygen to burn petrol.

麻烦的是，高海拔的地段，氧气稀薄，螺旋桨叶片没有空气使其扇动，而且发动机燃烧汽油也需要氧气。

When the water with the same water-flow flows, water running thrust force suffered by the mobile type magnet sensor with two propeller blades can be increased.

当同样的水流量流过时，具有两片螺旋桨片的活动磁铁传感器受到的水流推力会增加。

The transverse effect of the propeller blades at the top near the surface of the water is not strong enough to counteract the opposite effect of the lower blades.

螺旋桨的叶片在靠近水面上方横向效应不强，足以抵消低刀片相反的效果。

The model is applicable to the reliability analysis and design of infinite life for propeller blades or other structural members with initial defects and accident damage.

该模型可用于含初始缺陷或意外损伤的螺旋桨叶无限寿命可靠性分析和设计，得到桨叶可靠度与初始裂纹尺寸之间的函数关系式。

The system operates by a lever (28) which controls a pitch control unit (10) which in turn controls engine speed and also the pitch of propeller blades (12) of propeller (14).

系统通过控制螺距控制单元(10)的杆(28)操作，螺距控制单元依次控制引擎速度和螺旋桨(14)的螺旋桨叶片(12)的螺距。

Unlike the blades on old-fashioned propeller engines, these blades spin around at the back of the engine.

与老式螺旋桨发动机的叶片不同，这些叶片在发动机的后部旋转。

The energy in the wind turns two or three propeller-like blades around a rotor.

风力推动固定在转轴上两三个像推进器一样的叶片。

A simplified model of propeller with infinite number of blades is employed to account for the effect of free wave in this paper.

为了便于计算，对兴波部分简化了计算模型，螺旋桨用无限叶数螺旋桨模型来代替。

The utility model relates to a propeller which comprises a propeller hub and blades and is characterized in that the ends of the blades are connected with axial flow guiding sheets.

本实用新型是一种螺旋桨，它包括桨毂及桨叶，其特征在于桨叶末端联接有轴向导流片。

It usually works in the oblique flow, and its blades come into and out of the water surface, therefore vertical forces are generated as the propeller rotates.

由于表面桨一般在斜向流中工作，且存在桨叶出入水面，所以表面桨在工作时会产生垂向力。

By its rotation in water or air, the propeller produces thrust on the Blades, which gives forward motion to the vehicle.

当它在水中或空气中旋转时就对桨叶产生推力，然后推动交通工具前进。

The invention is characterized by the combination of the blades of a propeller and the wheel rim or ring rib of a flywheel, and has dual functions of a flywheel and a rotor wing or a propeller;

本发明是一种旋轮翼，它具有缘肋和桨叶，其特征是：把旋翼或螺旋桨的桨叶和飞轮的轮缘及加强环肋结构有机地结合成为一个整体，使之具有飞轮与旋翼或螺旋桨的双重功能；

Modern horizontal axis wind turbines of the "high-speed" type, as used in large scale power generation, typically include two or three propeller-style blades with a diameter of 100 meters or more.

“高速”型的现代水平轴风力涡轮机，如用于大规模发电的那种，一般包括两个或三个直径为100米或更大的螺旋桨式叶片。