Results 21 to 30 of about 172,189 (335)
The Journal of Engineering, 2019 This paper proposes a novel winding layout for the electric machines with fractional-slot concentrated windings (FSCW) using a stator shifting concept, with which all the non-working harmonics can be completely cancelled or significantly reduced and the ...
Shaohong Zhu +4 more
doaj +1 more source
Orienting coupled quantum rotors by ultrashort laser pulses [PDF]
, 2004 We point out that the non-adiabatic orientation of quantum rotors, produced by ultrashort laser pulses, is remarkably enhanced by introducing dipolar interaction between the rotors.
E. T. Whittaker +5 more
core +2 more sources
Generator configuration for helicopter quadruplex electric tail rotor
The Journal of Engineering, 2019 With the move to more electric aircraft (MEA), a key area of investigation is the development of commercially viable systems which are reliable, efficient, low mass, and are compatible and commensurate with the power and multiplex requirements of current
Julian D. Booker +3 more
doaj +1 more source
Splitting of Waves in Rotor-in-Rotor Nonlocal Metamaterials by Internal Rotor Coupling
SSRN Electronic Journal, 2022 Mechanical metamaterials can be used to control wave propagation because they are flexibly adjustable. In this paper, a one-dimensional rotor-in-rotor metamaterial with internal rotor coupling is proposed. This metamaterial introduces a new connection between lattices into a rotor-in-rotor system to produce a nonlocal metamaterial.
Leiyu Yang +3 more
openaire +2 more sources
Dynamics and interactions of active rotors
, 2010 We consider a simple model of an internally driven self-rotating object; a rotor, confined to two dimensions by a thin film of low Reynolds number fluid.
Doi M. +6 more
core +1 more source
Performance and wake analysis of rotors in axial flight using computational fluid dynamics [PDF]
, 2017 Flow field around rotors in axial flight is known to be complex especially in steep descent where the rotor is operating inside its own wake. It is often reported that, in this flight condition, the rotor is susceptible to severe wake interactions ...
Barakos, George +1 more
core +5 more sources
PWM-based Flux linkage estimation for permanent magnet synchronous machines
The Journal of Engineering, 2019 Monitoring of rotor temperature in permanent magnet synchronous machines (PMSM) is of great importance as high temperature could cause partial or even irreversible demagnetisation of the permanent magnets (PMs).
Shuai Xiao, Antonio Griffo
doaj +1 more source
LubricantsThe increasing demand for lightweight and high-performance brake rotors has led to the exploration of aluminum–metal matrix composites (Al-MMCs) as alternatives to conventional cast iron rotors.
Samuel A. Awe, Lucia Lattanzi
doaj +1 more source
Slow Recovery of Excitability Increases Ventricular Fibrillation Risk as Identified by Emulation
Frontiers in Physiology, 2018 Purpose: Rotor stability and meandering are key mechanisms determining and sustaining cardiac fibrillation, with important implications for anti-arrhythmic drug development.
Brodie A. Lawson +5 more
doaj +1 more source
Manufacturing method and performance assessment for variable lead vacuum rotors [PDF]
, 2017 In recent years variable lead rotors have been produced, mainly for vacuum applications, involving a multiple pass manufacturing process which is necessarily time-consuming.
Holmes, C. S., Rane, S., Wang, X.
core +1 more source