Results 1 to 10 of about 56,740 (170)
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
doaj +2 more sources
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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Torque and Drag Forces Problems in Highly Deviated Oil Well
Iraqi Journal of Chemical and Petroleum Engineering, 2018 Excessive torque and drag can be critical limitation during drilling highly deviated oil wells. Using the modeling is regarded as an invaluable process to assist in well planning and to predict and prevent drilling problems.
Hasan Ali Neamah +1 more
doaj +3 more sources
Investigation of a staggered dual-rotor wound field synchronous motor for offshore wind turbine full-scale testing platforms [PDF]
Scientific ReportsThe development of high-fidelity testing platforms for offshore wind turbines necessitates drag motors capable of emulating complex marine operating conditions while maintaining ultralow torque ripple.
Yang Xue +5 more
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Spin-transfer mechanism for magnon-drag thermopower [PDF]
, 2011 We point out a relation between the dissipative spin-transfer-torque parameter $\beta$ and the contribution of magnon drag to the thermoelectric power in conducting ferromagnets.
Duine, R. A. +3 more
core +17 more sources
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
doaj +1 more source
Machines, 2023 Wet friction clutch is the key functional component of the high-speed helicopter variable-speed transmission system, which is used to change the power transmission path.
Wuzhong Tan +3 more
doaj +1 more source
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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Mechanical Analysis of DS in Horizontal Directional Drilling
Applied Sciences, 2022 In recent years, trenchless horizontal directional drilling (HDD) technology has developed rapidly towards the direction of large pipe diameter and long span. During construction, the buckling deformation and large drag torque of the drillstring (DS) are
Hua Tong, Yongbo Shao
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A comparative study on the effect of disks geometrical features on the drag torque of a wet friction clutch [PDF]
MATEC Web of Conferences, 2020 In recent years, the need for highly efficient automatic and semiautomatic powertrains has led to the wide use of wet friction clutches as power transmission systems.
Rogkas Nikolaos +6 more
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