Results 71 to 80 of about 556,138 (304)
An estimation method of full scale performance for pulling type podded propellers
International Journal of Naval Architecture and Ocean Engineering, 2014 : This paper presents a new estimation method of full scale propulsive performance for the pulling type podded propeller. In order to estimate the drag of pod housing, a drag velocity ratio, which includes the effects of podded propeller loading and ...
Hyoung-Gil Park +2 more
doaj +3 more sources
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
Dust Settling and Rapid Planetary Migration
, 2010 Planetary migration is essential to explain the observed mass-period relation for exoplanets. Without some stopping mechanism, the tidal, resonant interaction between planets and their gaseous disc generally causes the planets to migrate inward so ...
Abramowitz +51 more
core +1 more source
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
Theoretical and experimental analysis of drag torque for accelerated motion of ball screw mechanism
, 2017 Dynamic model of the ball in space for ball screw mechanism is established under different angular accelerations of the screw, and non-linear equations of the ball acceleration motion model were solved in accordance with ball movement characteristics ...
Deshun Kong, Min Wang, Xiang-sheng Gao
semanticscholar +1 more source
Advanced Robotics Research, EarlyView.Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds +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
Assessment on drag force distribution of a semi-submersible truss fish cage in currents
Frontiers in Marine ScienceAssessing the current forces exerted on a semi-submersible truss fish cage is crucial for understanding drag force distribution and ensuring the structural safety.
Hang-Fei Liu +7 more
doaj +1 more source
Experimental study of bubble-drag interaction in a Taylor-Couette flow [PDF]
, 2013 This study is an experimental investigation of the interactions between the bubbles, the coherent motion and the viscous drag in a Taylor Couette flow, for the outer cylinder at rest. The cylinder radius ratio is 0.9.
COLIN, Catherine +2 more
core +5 more sources
Waveguide Photoactuators: Materials, Fabrication, and Applications
Advanced Robotics Research, EarlyView.Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi +4 more
wiley +1 more source