Results 31 to 40 of about 4,437,500 (186)
An alternative for wind energy conversion using improved Savonius rotor turbine model
IOP Conference Series: Materials Science and Engineering, 2021 The current society development is dependent of the planet energy resources and if we take an overview on renewable energies used worldwide it can be said that they are constantly gaining ground.
F. Scheaua
semanticscholar +1 more source
Innovative Helicopter In-Flight Noise Monitoring Systems Enabled by Rotor-State Measurements
Noise Mapping, 2016 The present contribution aims at providing a comprehensive illustration of a new approach to rotorcraft noise abatement, especially during terminal procedures, when the vehicle approaches the ground and the acoustic impact is higher.
Trainelli Lorenzo +7 more
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WLI, XPS and SEM/FIB/EDS Surface Characterization of an Electrically Fluted Bearing Raceway
LubricantsElectrical bearing currents may disturb the performance of the bearings via electro-corrosion if they surpass a limit of ca. 0.1 to 0.3 A/mm2. A continuous current flow, or, after a longer time span, an alternating current or a repeating impulse-like ...
Omid Safdarzadeh +4 more
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FEATURES OF HEAT TRANSFER IN THE GAS TURBINE ENGINE BEARING CHAMBER
Авіаційно-космічна техніка та технологія, 2018 The issue of ensuring the thermal regime of the rotor support, which guarantees reliable operation of the power plant, is particularly important in designing oil systems of aviation gas turbine engines, as well as ground-based GTEs. The exact calculation
Омар Хадж Аисcа Дуаиссиа +1 more
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A Comparison of Different Techniques for Induction Motor Rotor Fault Diagnosis
, 2012 The problem of failures in induction motors is a large concern due to its significant influence over industrial production. Therefore a large number of detection techniques were presented to avoid this problem.
Gu, Fengshou +5 more
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Aeroacoustics of a coaxial rotor in level flight [PDF]
, 2008 The aeroacoustic characteristics of a coaxial system with teetering rotors in level forward °ight are com- pared to those of an equivalent articulated single rotor with the same solidity.
Brown, R.E. +5 more
core
مجلة بغداد للعلومWind turbines deployed in utility-scale wind farms can support and meet future energy desires and also decrease carbon dioxide emissions by reducing energy requirements from fossil fuels.
Othman K. Zidane +1 more
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Bispectrum of stator phase current for fault detection of induction motor
, 2009 A number of research studies has shown that faults in a stator or rotor generally show sideband frequencies around the mains frequency (50 Hz) and at higher harmonics in the spectrum of the Motor Current Signature Analysis (MCSA).
Gu, Fengshou +5 more
core +1 more source
Design and Implementation of a Land-Air Omnidirectional Mobile Robot
AerospaceThis paper proposes a new type of omnidirectional mobile robot for land and air, which has three motion modes, combines the motion characteristics of land motion and air flight, has the ability to climb walls, and can be actively deformed to adapt to the
Changlong Ye +4 more
doaj +1 more source
ElectronicsCurrent transient stability analysis of power systems with doubly fed induction generators (DFIGs) draws upon the assumption that nodal electromagnetic power equals to zero during the fault period.
Yuanhan Zhong +5 more
semanticscholar +1 more source