Results 1 to 10 of about 6,314 (249)
Авіаційно-космічна техніка та технологія, 2023 The modern gas turbine engines (GTEs) development is associated with an increase in the compressor pressure ratio and the gas temperature at the turbine inlet with a simultaneous reduction in the size and weight of the engine.
Taras Mykhailenko +2 more
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Friction, 2017 Rotary near-field lithography (RNFL) technology provides a route to overcome the diffraction limit with a high throughput and low cost for nanomanufacturing.
Yueqiang Hu, Yonggang Meng
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Lubricants, 2023 The gas–liquid miscible backflow pumping seal (G-LMBPHS) is a non-contact mechanical seal that is suitable for high-speed bearing chambers. However, the tribological properties and wear mechanisms of the frictional pair of G-LMBPHS in an oil–air ...
Shicong Li +3 more
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Development of Air lubrication system and verification by the full scale ship test
Journal of the Japan Society of Naval Architects and Ocean Engineers, 2010 In late years, a demand for the carbon dioxide discharge reduction from a ship and the reduction of the operation cost has been risen more and more. According to these backgrounds, the authors are grappling with establishment of the frictional resistance reduction technology of the ship by means of the air lubrication methods.
Mizokami, Shuji +5 more
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A Systems Approach to the Solid Lubrication of Foil Air Bearings for Oil-Free Turbomachinery [PDF]
Journal of Tribology, 2004 Foil air bearings are self-acting hydrodynamic bearings which rely upon solid lubricants to reduce friction and minimize wear during sliding which occurs at start-up and shut-down when surface speeds are too low to allow the formation of a hydrodynamic air film. This solid lubrication is typically accomplished by coating the nonmoving foil surface with
Christopher DellaCorte +2 more
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Development of a Cryogenic Tester with Air Bearing to Test Sliding-Rolling Contact Friction
Lubricants, 2022 This study aimed to test the friction coefficient of cryogenic bearing lubrication materials. A ball-on-disc type friction tester was developed in our lab using air bearings that could simulate the movement of cryogenic bearings under sliding-rolling ...
Fengbo Liu +4 more
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Transactions of the Krylov State Research Centre, 2021 The report describes the work on the modernization of the lubrication system and the air seal system of the gas turbine engine, during the tests of which a number of problems were identified. The method and calculations during which it was possible to optimize the operation of the lubrication unit and the air seal are described.
V.M. Druchok, N.N. Gordeev
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Liquid Film Thickness Estimation using Electrical Capacitance Tomography
Measurement Science Review, 2014 In air/oil lubrication systems, the flow parameters, e.g., flow pattern, liquid film thickness, and air/oil flow rate, are of great importance to the transportation efficiency.
Cui Ziqiang +3 more
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Numerical investigation of a novel device for bubble generation to reduce ship drag
International Journal of Naval Architecture and Ocean Engineering, 2018 For a sailing ship, the frictional resistance exerted on the hull of ship is due to viscous effect of the fluid flow, which is proportional to the wetted area of the hull and moving speed of ship.
Jun Zhang, Shuo Yang, Jing Liu
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Comparative Analysis of Effectiveness of Resistance and Induction Turnout Heating
Energies, 2020 Turnouts are key parts of rail roads and are exposed to adverse weather conditions such as snowfall, snow drifts, low temperatures, or sleet. Effective protection assures good turnout function and contributes to rail traffic efficiency and safety ...
Elzbieta Szychta, Leszek Szychta
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