Results 31 to 40 of about 175,294 (335)
Vojnotehnički Glasnik, 2017 In this study we analyzed the design changes through increasing vertical angles of the top and bottom plates of the wind inlet of a Savonius rotor, in order to obtain better results and better system performances.
Dejan D. Dinčić, Milan Z. Despotović
doaj +1 more source
Effect of PLL on transient performance of wind turbines generator under voltage phase jump
The Journal of Engineering, 2019 With the increasing proportion of wind power installed capacity, the influences of transient characteristics of wind turbines generator on safety and stability of power grid is becoming more and more important.
Chao Liu +4 more
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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
Optimal segmented rotor design for the embedded electrical machine for the more electric aircraft
The Journal of Engineering, 2019 This study presents the design and analysis of the segmented rotor design for an electrical machine embedded onto the more electric aircraft gas turbine engine shaft.
Jenn Yen Loh +5 more
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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
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Fluid flow measurement in rotor ventilation ducts
The Journal of Engineering, 2019 Engineers are constantly developing different ways to cool electrical machines more efficiently. Ventilation ducts/channels are common in the stators of large electrical machines.
Christopher Micallef +2 more
doaj +1 more source
Variable-speed tail rotors for helicopters with variable-speed main rotors [PDF]
, 2017 Variable tail rotor speed is investigated as a method for reducing tail rotor power, and improving helicopter performance. A helicopter model able to predict the main rotor and tail rotor powers is presented, and the flight test data of the UH-60A ...
Barakos, G.N., Han, D.
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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
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
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