Results 61 to 70 of about 56,749 (281)
Hard‐Magnetic Soft Millirobots in Underactuated Systems
Advanced Robotics Research, EarlyView.This review provides a comprehensive overview of hard‐magnetic soft millirobots in underactuated systems. It examines key advances in structural design, physics‐informed modeling, and control strategies, while highlighting the interplay among these domains.
Qiong Wang +4 more
wiley +1 more source
A rational approach to comparing the performance of coaxial and conventional rotors [PDF]
, 2009 The merit, in terms of its efficiency and performance, of the twin, contrarotating coaxial rotor configuration over the more conventional single rotor system has long been a point of contention.
Brown, R.E., Kim, Hyo Wan
core +1 more source
BINARIES TRAVELING THROUGH A GASEOUS MEDIUM: DYNAMICAL DRAG FORCES AND INTERNAL TORQUES [PDF]
The Astrophysical Journal, 2014 Using time-dependent linear theory, we investigate the morphology of the gravitational wake induced by a binary, whose center of mass moves at velocity Vcm against a uniform background of gas. For simplicity, we assume that the binary's components are on circular orbits about their common center of mass.
F. J. Sánchez-Salcedo, Raul O. Chametla
openaire +2 more sources
Fold Walker: An Origami‐Inspired Quadruped Robot for Multipattern Locomotion and Object Grasping
Advanced Robotics Research, EarlyView.This article presents Fold Walker, an origami‐inspired quadruped robot capable of multipattern locomotion and object grasping. With each leg featuring two rotational folds, the robot can transform from a flat 2D configuration into complex 3D poses. Furthermore, its trunk and legs can be one‐shot 3D printed as a unified structure, greatly simplifying ...
Yilun Sun
wiley +1 more source
Unzipping Dynamics of Long DNAs
, 2002 The two strands of the DNA double helix can be `unzipped' by application of 15 pN force. We analyze the dynamics of unzipping and rezipping, for the case where the molecule ends are separated and re-approached at constant velocity.
A. Sarkar +32 more
core +1 more source
Improvement of Torque-and-Drag Modeling in Long-Reach Wells
Modern Applied Science, 2011 Torque and drag modeling is regarded as an invaluable process to assist in well planning and to predict and prevent drilling problems. It discusses how to use torque and drag calculations and measurements to plan long-reach well profiles, to execute drilling operations that minimize torque and drag effects and to monitor hole cleaning.
Seyed Ahmad Mirhaj +2 more
openaire +2 more sources
Magnetic Field Driven Microrobot Based on Hydrogels
Advanced Robotics Research, EarlyView.Hydrogel‐based magnetic microrobots synergize remote magnetic control with the biocompatibility of flexible hydrogels, emerging as promising tools for minimally invasive biomedicine. This enables remotely controllable, untethered navigation within complex biological microenvironments.
Juncai Song, Yubing Guo
wiley +1 more source
Study on the Drag Torque Characteristic of Underground Unmanned Vehicle Wet Brake System
Jixie chuandong, 2015 In view of the problem of the braking effectiveness obvious fluctuation,poor system stability of traditional underground transport vehicle,the wet brake is introduced to the traditional underground unmanned vehicle braking system,the calculation and ...
Zhou Lihong
doaj
Advanced Robotics Research, EarlyView.This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska +2 more
wiley +1 more source
Drill String Drag and Torque Test Device Design
Shiyou jixie, 2019 The existing drag and torque theoretical model has many assumptions, leading to a large difference between the calculated value and the true value, which seriously restricts the study of the mechanical behavior of the drill string and the optimization of
吴泽兵 +4 more
doaj