Results 111 to 120 of about 556,138 (304)

Calculation and analysis of dynamic drag and torque of horizontal well strings

Natural Gas Industry B, 2019
In recent years, shale gas production horizontal well types mainly include conventional horizontal well, highly deviated well and scoop-shape horizontal well.
Xiaohua Zhu, Kewei Li, Jiawei An
semanticscholar   +1 more source

All-propulsion design of the drag-free and attitude control of the European satellite GOCE

, 2009
This paper concerns the drag-free and attitude control (DFAC) of the European Gravity field and steady-state Ocean Circulation Explorer satellite (GOCE), during the science phase.
Canuto, Canuto, Canuto, Canuto, DeBra, Donati, Enrico Canuto, Fichter, Fichter, Johannessen, Koenig, Lange, Luca Massotti, Picone, Tapley, Touboul, Vaillon, Vallado, Vaniček   +18 more
core   +1 more source

EMG‐Driven Telemetry and Inference System for Fish: Pose Reconstruction and Flow Sensing

Advanced Intelligent Systems, EarlyView.
This work introduces an electromyography (EMG)‐driven telemetry framework that reconstructs body pose and infers hydrodynamic conditions in freely swimming fish. A custom 16‐channel archival system records intramuscular EMG, enabling deep‐learning models to decode joint kinematics, classify flow regimes, and reveal channel‐efficient sensing strategies.
Rahdar Hussain Afridi, Waqar Hussain Afridi, Muhammad Hamza, Ahsan Tanveer, Mingxin Wu, Xingwen Zheng, Liang Li, Guangming Xie   +7 more
wiley   +1 more source

Optimization Design of Low Drag Torque Parameters of High-speed Wet Clutches

Jixie chuandong
In 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, Zhao Junsheng, Li Xueming, Gao Weidong, Gong Ke   +4 more
doaj  

Intelligent Operator‐Independent Flexibility in Robotic Non‐Destructive Evaluation

Advanced Intelligent Systems, EarlyView.
Non‐destructive evaluation of high‐value components remains a manufacturing bottleneck due to rigid robotic calibration and fixturing. This study presents a flexible, adaptable system integrating 3D vision and force‐position control with a collaborative KUKA LBR robot. The geometry‐agnostic system enables pose‐independent ultrasonic inspection, detects
Amine Hifi, Randika K. W. Vithanage, Shaun McKnight, Vedran Tunukovic, Ewan Nicolson, Rylan Gomes, Alastair Poole, Ehsan Mohseni, Stephen Gareth Pierce, Charles MacLoed, Tom O’Hare, Gavin Munro   +11 more
wiley   +1 more source

A moving control volume approach to computing hydrodynamic forces and torques on immersed bodies

, 2017
We present a moving control volume (CV) approach to computing hydrodynamic forces and torques on complex geometries. The method requires surface and volumetric integrals over a simple and regular Cartesian box that moves with an arbitrary velocity to ...
Bhalla, Amneet Pal Singh, Johansen, Hans, Nangia, Nishant, Patankar, Neelesh A.   +3 more
core   +1 more source

Soft Artificial Ciliary Brush with Integrated Haptic Feedback for Efficient Airway Mucus Cleaning

Advanced Intelligent Systems, EarlyView.
A fundamental mucus cleaning mechanism is reported, which utilizes both artificial cilia mechanical sweeping and suction‐based mucus cleaning. A novel haptic feedback interface for the artificial cilia provides touch feedback on tissue contact, enhancing operator control and safety.
Zhongming Lyu, Yusheng Wang, Ruijian Ge, Darren Wang, Matthew Bacchetta, Caitlin T. Demarest, Fabien Maldonado, Xiaoguang Dong   +7 more
wiley   +1 more source

Key Technology for Drilling Speed and Efficiency Improvement on Chenghai 2-2 Artificial Island of Dagang Oilfield

Shiyou jixie, 2019
To address the problems of difficult trajectory control, high torque and drag and serious regional lost circulation on Bohai 2-2 artificial island of Dagang Oilfield, based on the analysis of drilling difficulties, targeting the well trajectory control ...
Wang Jianlong, Xu Jingguo, Du Qiang, Jin Haifeng, Cheng Dong, Zheng Feng, Li Ruiming   +6 more
doaj  

Performance of vertical-axis type straight-bladed Darrieus turbine with elastic blades (Performance improvement by deformation of blades)

Journal of Fluid Science and Technology, 2015
The characteristics of a straight-bladed Darrieus turbine (Gyro-mill turbine) with elastic blades are experimentally studied. The same structured turbine with rigid blades is also studied for comparison.
Tomoya NAKAJIMA, Michihisa TSUTAHARA, Masakazu YAMAUCHI, Kenichi KURODA   +3 more
doaj   +1 more source

Towards Advanced Intelligent and Perceptive Soft Grippers

Advanced Intelligent Systems, EarlyView.
Implementing soft yet strong and intelligent soft grippers request innovative and creative solutions in designing soft bodies and seamlessly integrating actuated systems with hierarchical sensing. This review systematically analyses soft grippers with a deep understanding of core components, from fundamental design principles to actuation and sensing ...
Haneul Kim, Hayeon Shin, Seik Park, Changbeom Shim, Seonggun Joe   +4 more
wiley   +1 more source