Application of advanced materials to rotating machines [PDF]
, 1983 In discussing the application of advanced materials to rotating machinery, the following topics are covered: the torque speed characteristics of ac and dc machines, motor and transformer losses, the factors affecting core loss in motors, advanced ...
Triner, J. E.
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High speed induction motor and inverter drive for flywheel energy storage [PDF]
The use of flywheels to store energy is a technology which is centuries old. The confluence of several modern technologies has resulted in flywheels becoming a viable solution for the needs of the transportation, electric utility, and aerospace ...
Caprio, M.T. +5 more
core
High Speed Gear Sized and Configured to Reduce Windage Loss [PDF]
A gear and drive system utilizing the gear include teeth. Each of the teeth has a first side and a second side opposite the first side that extends from a body of the gear.
Hill, Matthew John +2 more
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The Effectiveness of Shrouding on Reducing Meshed Spur Gear Power Loss - Test Results [PDF]
Gearbox efficiency is reduced at high rotational speeds due to windage drag and viscous effects on rotating, meshed gear components. A goal of NASA aeronautics rotorcraft research is aimed at propulsion technologies that improve efficiency while ...
Delgado, I. R., Hurrell, M. J.
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Quiet Clean Short-haul Experimental Engine (QCSEE) main reduction gears detailed design report [PDF]
Lightweight turbine engines with geared slower speed fans are considered. The design of two similar but different gear ratio, minimum weight, epicyclic star configuration main reduction gears for the under the wing (UTW) and over the wing (OTW) engines ...
Defeo, A., Kulina, M.
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Motoring and Generating mode of 3-Φ Induction Machine – A Comparative Evaluation For Energy Efficiency [PDF]
, 2011 Vast use of fossil fuels is leading to energy deficiency. Hence the renewable energy sources like wind energy and solar energy are being used. Classical asynchronous induction generators are being used in wind energy based power generation system.
Behera, Smruti Ranjan, Prasad, Saroj
core
The state-of-art of design and research for Pelton turbine casing, weight estimation, counterpressure operation and scientific challenges. [PDF]
Heliyon, 2021 Quaranta E, Trivedi C.
europepmc +1 more source
Advanced single permanent magnet axipolar ironless stator ac motor for electric passenger vehicles [PDF]
A program was conducted to design and develop an advanced-concept motor specifically created for propulsion of electric vehicles with increased range, reduced energy consumption, and reduced life-cycle costs in comparison with conventional systems.
Beauchamp, E. D. +2 more
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An analytical method to predict efficiency of aircraft gearboxes [PDF]
A spur gear efficiency prediction method previously developed by the authors was extended to include power loss of planetary gearsets. A friction coefficient model was developed for MIL-L-7808 oil based on disc machine data. This combined with the recent
Anderson, N. E. +2 more
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Hydraulic constraints determine the distribution of heteromorphic leaves along plant vertical height. [PDF]
Front Plant Sci, 2022 Yang XD +9 more
europepmc +1 more source