我们的涡桨或活塞飞机生产线达到或超过了公司的内部财务和交付预期目标。
Our turboprop and piston aircraft lines are meeting or exceeding the company's internal financial and delivery targets.
一个涡桨可以比其他的飞机发动机多处理一些气流，因此在低速时，无论给定的燃料占总量的比例是多少，都会产生最大的推力。
A turboprop handles a larger airflow than any other aircraft engine and so (at low speeds) generates the largest thrust for any given rate of fuel consumption.
其他最有希望开拓的客户市场包括来自美国、巴西、俄罗斯、印度、中国和澳大利亚。 EV-55的设计目标是取代陈旧的6-9座活塞式飞机，她希望能够成为单发涡桨飞机的有力竞争者。
The EV-55 objective is replacement of already obsolete twin-engine piston airplanes with capacity for 6 – 9 passengers and it wants to be a successful competitor for single-engine turboprop airplanes.
螺旋桨表面和它的尾涡面离散为四边形双曲面元，每个面元上布置等强度偶极子和源汇分布。
The surface of propeller and its trailing vortex is divided into a number of small hyperboloidal quadrilateral panels with constant source sink and doublet distributions.
采用了一个修正的螺旋桨尾涡模型，来模拟导管螺旋桨尾涡片的扭曲变形及分离现象。
A modified trailing vortex wake model of propeller is introduced to describe the distortion and separation of the trailing vortex sheet.
采用大涡模拟方法对一条双机双桨船舶机舱火灾进行数值模拟。
In this paper, the large eddy simulation method is used to simulate fire in a ship engine-room.
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 propeller blades are calculated by a vortex lattice method, while the pod including its strut by a boundary element method for non-lifting bodies.
诱导速度在桨盘处的分布则采用王氏固定涡系涡流理论所导出的诱导速度非均布公式。
The nonuniform distribution of induced velocity on the rotor disk which is derived from the wang's generalized fix vortex theory is taken into account.
进一步优化螺旋桨尾涡模型，并进行了实例计算与试验结果、原计算结果对比分析，结果表明改进后的尾涡模型计算结果具有更高的精度。
Practical sample is calculated and experimental test is carried out. Comparison with the previous result shows that the improved wake model gives resalls with higher accuracy.
采用升力面涡格法对系列大毂径MAU型螺旋桨进行敞水性能计算，运用理论算法扩充了MAU型螺旋桨图谱。
The open water characteristics of a series of large hub-diameter Ratio MAU propellers are calculated by using lift-surface method to expand the chart of MAU-series propeller.
在小进距比的重载情况，螺旋桨尾涡的收缩对螺旋桨的性能影响较大。
In the case of heavy load when the advance ratio of propeller is small, the contraction of wake has large effect on the performance of the propeller.
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。
Lifting surface method and non-linear vortex lattice method were used for the calculation of propeller and rudder with additional thrust fins respectively.
旋翼桨-涡干扰噪声问题是直升机气动声学领域的一个研究热点和难点。
The research on the rotor blade-vortex interaction (BVI) noise is a very important aspect and a very challenging subject in the rotorcraft aeroacoustics field.
本文用涡动力学理论分析了锯齿形叶梢对螺旋桨的梢涡的影响。
The effect of the sawtooth shape tip on tip vortex of the propeller is studied with the theory of vortex dynamics in the paper.
尾涡畸变引起的诱导速度变化比机身直接在桨盘处诱导速度大得多。
The variation of the induced velocity distribution at the rotor plane caused by the fuselage through distorting the rotor near-wake is much larger than that induced by the fuselage directly.
在机身影响下，旋翼近场尾涡形状发生畸变，从而改变桨盘处的诱导速度分布。
The results show that the rotor near-wake is distorted because of the flow field of the fuselage, resulting in large variation on the induced velocity distribution at the rotor plane.
它们使用的操纵和控制系统大多是由多个螺旋桨推进器组成的，这样的系统体积大、重量大、能耗高、综合效率低，并有较大的噪音和尾涡。
Their maneuvering and control systems are made up of several propellers. This system has many disadvantages such as big volume, high consuming of energy, low total efficiency , high noise and vortex.
设计了圆盘型涡凹曝气头和螺旋桨型涡凹曝气头，比较了两种类型曝气器的引气量、曝气气泡直径、粒径分布等。
The design of the disc turbine aerator and the oar turbine aerator are discussed. Their inspiratory capacity, air bubble diameter and distribution frequency are compared.
建立了一个旋翼桨尖涡初始涡核半径计算模型，用于消除旋翼自由尾迹分析中桨尖涡涡核半径依靠经验设定的现状。
A model is developed for the calculation of the initial rotor tip vortex core radius aiming at eliminating the empirical parameters of the tip vortex in rotor free-vortex wake analysis.
桨毂帽鳍可改善毂涡空泡，模型试验状态下可提高推进效率2%左右。
The boss vortex cavitation of propeller can be avoided by PBCF, and an increase of 2% in propulsion efficiency has been measured in the model tests.
阿压电桨涡生成的检测和分析与综合电子的价值。
A piezoelectric paddle detects the generated vortex and analyses the values with the integrated electronic.
基于桨叶二阶升力线理论和旋翼自由尾迹模型，本文在第三章建立了一个适合于直升机旋翼尾迹结构及桨-涡干扰气动特性分析的方法和模型。
In Chapter 3, based upon the blade second-order lifting-line model and rotor free-wake model, an analytical method is developed for predicting the rotor wake structure and BVI airload.
基于桨叶二阶升力线理论和旋翼自由尾迹模型，本文在第三章建立了一个适合于直升机旋翼尾迹结构及桨-涡干扰气动特性分析的方法和模型。
In Chapter 3, based upon the blade second-order lifting-line model and rotor free-wake model, an analytical method is developed for predicting the rotor wake structure and BVI airload.
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