美 英 un.理想推进器效率 英汉 un. 1. 理想推进器效率
The propulsive efficiency of propeller driven marine vessels is increased by the artificial generation of axial vibrations acting on the tailshaft which produce spurious variations of thrust independent of the pattern of the flow velocity to the propeller, the phase, amplitude, frequency and frequency ...
propeller-of-optimum-efficiency网页 图片 视频 学术 词典 航班 propeller of optimum efficiency 美 英 un.最佳效率推进器 英汉 un. 1. 最佳效率推进器 隐私声明 法律声明 广告 反馈 © 2024 Microsoft
Propulsive efficiency of various types of jet engines. The ratio of propulsive power to the rate of increase of kinetic energy by the gas stream. In reciprocating engines, it is the ratio of the thrust horsepower produced by the propeller to the torque horsepower of the shaft turning the prope...
Investigation of the effects of a fan-shaped Mewis duct before a propeller on propulsion performance When the propeller and duct were taken as a propulsion system, the efficiency of the system was less than that of only the propeller. At the same ... X Chang,S Sun,Y Zhi,... - 《Journ...
The engine usually be directly coupled to the propeller as the maximum efficiency of each can be matched at a suitable rotational speed;slow speed two-stroke;medium speed four-stroke;medium speed two-stroke;high speed four-stroke
Influence of the Mass Transfer Model on the Numerical Prediction of the Cavitating Flow Around a Marine Propeller Cavitating flows, which can occur in a variety of practical applications, can be modelled using a wide range of methods. One strategy consists of using the RANS (Reynolds Averaged Nav...
4) propeller efficiency 推进器效率 5) maximum propulsive efficiency 最大推进效率 6) optimum efficiency 最佳效率 1. It also discusses the style for no-load test and short circuit test, so as to conclude the reasonable load selection for theoptimum efficiencyof transformer. ...
2) propeller of optimum efficiency 最佳效率推进器3) propulsion efficiency 推进效率 1. These will decrease the propulsion efficiency and increase fuel consumption. 船舶污底引起阻力增加,降低了船舶的推进效率,增加了耗油量。 2. A new method to determine the thrust of pitching oscillating foil was ...
Only in the case of small inland ships travelling great distance on open water, a large impact in fuel consumption and emissions can be detected if the wave making resistance is reduced. Optimization of the propeller and/or the installation of a propeller nozzle may induce a large gain in ...