升力面理论 meaning in English
lifting surface theory
lifting-plane theory
lifting-surface
Examples
- Lifting surface theory
升力面理论 - The blade section can be designed by parent section , thereby its chordwis circulation distributions can be worked out , and then lifting surface theory is used to design the three dimension blade geometry
剖面采用母型剖面方法来设计，进而可确定桨叶弦向环量分布，然后由升力面理论设计三维桨叶的几何形状。 - Numerical lifting - surface theory has been developed as a practical tool in predicting marine propeller ' s hydrodynamic performance because it is easily being computed and accurate for application
升力面理论由于方法简单易行，它可以对螺旋桨的水动力性能作出非常准确的预报，是当前求解螺旋桨的水动力性能有力的分析工具。 - Using a combination method of the lifting surface theory and acoustic technique , the effects of different diameters , skews and rakes on the discrete noise of the propeller are studied by the numerical method and some useful results for engineering are presented in this paper
利用升力面理论和声学方法得到的离散谱噪声的预报公式，对螺旋桨直径、侧斜、纵倾变化对离散谱噪声的影响作了数值计算，并得到了工程上有实用意义的结果。 - In the second part , firstly , the mathematical model for predicting hydrodynamic characteristics of varivec propeller under steady or unsteady condition are present , based on the general propeller lifting - surface theory , potential flow theory and green theorem . then , theoretical calculation methods for predicting hydrodynamic characteristics of varivec propeller designed above paragraphs are present , based on the finite basic solution method , the unsteady vortex lattice method and hess - smith method
在理论计算部分，本文首先基于常规螺旋桨升力面理论、势流理论和格林定理建立了定常和非定常状态下全方向推进器水动力性能计算的数学模型，然后利用有限基本解法、非定常涡格法和赫斯?史密斯方法对全方向推进器定常和非定常状态下的数学模型进行了数值离散，接下来针对前面所设计的全方位推进器进行了数值预报。