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Research on noise reduction of annular axial cooling fan blade with perforated structure. [PDF]
Sci RepWang H +6 more
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Numerical Investigation of Inter-Rotor Spacing Effects on Wake Dynamics of Coaxial Rotors
Journal of Aircraft, 2021In this Paper, the wake dynamics of coaxial rotors are studied using the high-wake-resolution method.
Soogab Lee, Jeongwoo Ko
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REMARKS ON SYMMETRIES OF GENERALIZED ROTOR SPACE
International Journal of Modern Physics E, 2004We propose methods of analysis of the symmetries of the rotor space. A few examples of the point symmetries and their consequences for the state space of the quantum rotors are shortly considered.
Andrzej Góźdź +2 more
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Illuminating the dark conformational space of macrocycles using dominant rotors
Nature Chemistry, 2021Three-dimensional conformation is the primary determinant of molecular properties. The thermal energy available at room temperature typically equilibrates the accessible conformational states. Here, we introduce a method for isolating unique and previously understudied conformations of macrocycles.
Diego B. Diaz +6 more
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Experimental Thermal and Fluid Science, 2013
The present work analyses the aerodynamic complexities involved in the optimization of a coaxial rotor system in an attempt to maximize its performance in hover flight. Performance measurements (thrust and power consumption) of the system and the influence of design parameters (rotor spacing and wind speed) on performance are obtained with the ...
Yue Bai, Yao Lei, Gao Qingjia
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The present work analyses the aerodynamic complexities involved in the optimization of a coaxial rotor system in an attempt to maximize its performance in hover flight. Performance measurements (thrust and power consumption) of the system and the influence of design parameters (rotor spacing and wind speed) on performance are obtained with the ...
Yue Bai, Yao Lei, Gao Qingjia
exaly +2 more sources
Time-Space Spectral Method for Rotor–Rotor/Stator–Stator Interactions
Journal of Turbomachinery, 2019AbstractThe paper presents a time-space spectral method for an efficient analysis of rotor–rotor/stator–stator interactions in the framework of the time spectral form harmonic balance method. The method treats time and space harmonics in a coherent way and allows for easy choice of time and passage through the introduction of pseudo-shaft frequency and
Xiuquan Huang, Ding Xi Wang
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Induction Motor Rotor Condition Monitoring Using Rotor Voltage Space Vector
2019 Chinese Automation Congress (CAC), 2019High-speed train is developing very fast. As an important part of the train, motor failures can cause many problems. In order to solve the problems, it is important to get the precise motor condition in time. Over the past several decades, many researches on motor faults diagnosis, have been presented.
Junwei Ti, Tao Peng
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Stabilized space–time computation of wind-turbine rotor aerodynamics
Computational Mechanics, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Takizawa, Kenji +4 more
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Psychoacoustic Optimization of the Spacing of Propellers, Helicopter Rotors, and Axial Fans
Journal of Propulsion and Power, 2016The paper deals with the minimization of the subjective annoyance (that is, of the quality of the received sound rather than of its acoustic power) due to tonal noise generated by subsonic low-solidity axial-flow rotors. The employed method is based on the uneven spacing of the blades, is typically applied to open or nearly open rotors, and is based on
ANGHINOLFI, DAVIDE +3 more
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