Results 11 to 20 of about 12,193 (210)
Research on the aerodynamic characteristics of eVTOL aircraft ducted rotor tip embedded inside the ducted body [PDF]
Scientific ReportsThe lift system constitutes a pivotal technology in the makeup of vertical takeoff and landing aircraft systems. The application of ducted rotors in urban air mobility(UAM) has advantages and is one of the future development trends.
Siliang Du +4 more
doaj +2 more sources
The Journal of Engineering, 2019 The doubly fed induction generator (DFIG) has insufficient capacity to respond to the frequency inertia of the power grid due to the isolation between the rotor kinetic energy and the power grid by the generator-side converter.
Dongyang Sun +6 more
doaj +1 more source
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
doaj +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
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
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
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
doaj +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source