Drag and Torque on Locked Screw Propeller [PDF]
TransNav, 2014 Few data on drag and torque on locked propeller towed in water are available in literature. Those data refer to propellers of specific geometry (number of blades, blade area, pitch and skew of blades).
Tomasz Tabaczek, Tomasz Bugalski
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Analysis and Suppression Method of Drag Torque in Wide-Speed No-Load Wet Clutch
ActuatorsUnder no-load conditions, the wet clutch of vehicles generates drag torque across a wide speed range, which increases power loss in the transmission system and significantly impacts its efficiency and reliability.
Rui Liu +5 more
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Experimental analysis of oil flow and drag torque generation in disengaged wet clutches
Scientific Reports, 2023 Fundamental knowledge of the oil flow in a disengaged wet clutch is essential for optimizing the cooling performance and the drag losses. However, no fundamental information on the oil flow and drag torque generation is available for dip-lubricated wet ...
Lukas Pointner-Gabriel +3 more
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A hybrid analytical and data driven framework for optimizing radially grooved wet clutch geometry [PDF]
Scientific ReportsIn wet clutch systems, the drag torque is generated by the relative motion between rotating disks in the presence of the oil film. This study aims to optimize the geometry of radially grooved wet clutches to minimize drag torque.
Mohammad Sadafi +2 more
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CFD-Based Parametric Optimization of Friction Pad Geometry for Drag Torque Reduction in a Wet Clutch
Applied SciencesIn this study, we numerically investigated the effect of friction pad geometry on drag torque reduction in the disengaged state of a wet clutch used in an integrated mechanical limited-slip differential (mLSD)-disconnector module.
Sung Jun Park +4 more
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Tribology Online, 2016 In the automotive industry one of the crucial issues is reduction of CO2 emission to protect environment. A lot of researches have been done to reduce the CO2 emission of cars by improving efficiency of engine and engine parts or lowering the weight ...
Shahjada Ahmed Pahlovy +4 more
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Optimization and Experimental Testing of the Drag Torque Model Based on the Cavitation Effect
Jixie chuandongIn the non-braking operation of the wet brake in a heavy vehicle's hybrid power transmission system, the friction pair produces a drag torque due to the power loss caused by the viscous action of the oil.
Li Jie +3 more
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Optimization Design of Low Drag Torque Parameters of High-speed Wet Clutches
Jixie chuandongIn order to reduce the drag torque under high speed conditions, the equivalent radius is introduced into the traditional low speed torque model of a wet clutch with track vehicle, and the calculation model of the drag torque with radial groove is derived.
Wang Yuxi +4 more
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TORQUE AND DRAG MEASUREMENT: A COMPARISON BETWEEN CONVENTIONAL, SLIM HOLE AND CASING DRILLING METHODS IN A DEVIATED WELL [PDF]
Platform, a Journal of Engineering, 2020 Different locations and field conditions require various drilling methods to produce oil and gas. Three major operational methods are identified to be slim holes, conventional and casing drilling.
Davood Zivar +3 more
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Method of suspender line trajectory design
Petroleum Exploration and Development, 2021 Based on the mechanical model of an elastic rod, a new trajectory design method was established. The advantages of the suspender line trajectory in reducing drag and torsion were compared, and the main controlling factors of drag and torque and their ...
Fan YU +5 more
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