Results 81 to 90 of about 5,963 (290)

Application of CFD Methods for the Assessment of Ship Manoeuvrability in Shallow Water [PDF]

TransNav, 2012
Safety in water transport plays a significant role. One way to increase safety in the waterways is to ensure that ships have proper manoeuvrability. Evaluation of manoeuvring properties performed at an early stage of design can detect problems that later
Tomasz Gornicz, Jan Kulczyk
doaj  

Impacts of rudder profiles on ship manoeuvrability

, 2015
The performance of a ship’s rudder largely determines its manoeuvrability, which includes turning ability, initial turning ability, yaw-checking ability and course-keeping ability. However, existing empirical formulas for rudder forces do not concern the
Liu, J. (author), Quadvlieg, F., Quadvlieg, F. (author), Hekkenberg, R.G. (author), Hekkenberg, R.G., Liu, J.   +5 more
core   +1 more source

Paraborg: Paramedic Cyborg Insects for In Situ Emergency Drug‐Delivery

Advanced Science, EarlyView.
This work introduces Paraborg, a human‐supervised paramedic cyborg‐insect platform that combines controllable locomotion, onboard imaging, and an auto‐injection mechanism for in situ drug‐delivery. By demonstrating reliable navigation, target stabilization, injector launch, and multi‐insect teamwork, the study extends cyborg insects from survivor ...
H. Nhan Le, P. Thien Phan, Lachlan Fitzgerald, P. Ross McAree, T. Nho Do, T. Thang Vo‐Doan   +5 more
wiley   +1 more source

A study of shallow water’s effect on a ship’s pivot point

Ingeniería e Investigación, 2012
Information regarding a turning ship’s pivot point has been collected, taking practical notes and ship maneuvering manuals into account as well as experimental data and simulated results, together revealing consistent behaviour when varying water depth ...
Jorge Enrique Carreño, Jaime David Mora, Francisco Lázaro Pérez   +2 more
doaj  

Quantifying the manoeuvring performance of an underwater glider using the RANS-based method

Engineering Applications of Computational Fluid Mechanics
Underwater gliders are long-endurance vehicles that map the ocean using sawtooth trajectories, playing a key role in monitoring oceanic conditions.
Vignesh Durai, Yang Song, Yunxin Xu, Weichao Shi   +3 more
doaj   +1 more source

Performance Estimation and Ex Vivo Validation of Untethered Magnetic Robots in Soft Tissue

Advanced Science, EarlyView.
This study presents an empirical model that quantitatively predicts the step‐out frequency of screw‐type untethered magnetic robots (UMRs) in soft viscoelastic environments, including ex vivo brain tissue. By integrating key parameters into a dimensionless framework, the model enables estimation of robot performance across a range of biological ...
Leendert‐Jan W. Ligtenberg, Thijs J. van der Burg, Stijn Y. Kolkman, Santiago Saavedra Castano, David Fernandez Rivas, Anke Klingner, Roger M. L. M. Lomme, Lucas S. Joziasse, Dorothee Wasserberg, H. Remco Liefers, Doron Ben Ami, Udi Sadeh, Oded Shoseyov, Giulio Dagnino, Pascal Jonkheijm, Jurgen J. Fütterer, Stefano Stramigioli, J. Frank W. Nijsen, Michiel C. Warlé, Islam S. M. Khalil   +19 more
wiley   +1 more source

Anticipatory Manoeuvres in Bird Flight

Scientific Reports, 2016
AbstractIt is essential for birds to be agile and aware of their immediate environment, especially when flying through dense foliage. To investigate the type of visual signals and strategies used by birds while negotiating cluttered environments, we presented budgerigars with vertically oriented apertures of different widths.
Vo, Hong D., Schiffner, Ingo, Srinivasan, Mandyam V.   +2 more
openaire   +5 more sources

A Magnetic‐Driven Self‐Rotation‐Stabilized Miniature Swimming Robot

Advanced Science, EarlyView.
Inspired by the stable rotational descent of seeds in nature, this study designs a magnetic‐driven self‐rotation‐stabilized miniature swimming robot (MSMSR). Based on a resonance‐driven strategy, the robot exhibits high swimming performance, offering enhanced directional swimming and improved resistance to water flow disturbances compared to existing ...
Fujun Wang, Chuhan Zhang, Hao Zhang, Yanling Tian, Cunman Liang   +4 more
wiley   +1 more source

Enhancing Wheelchair Manoeuvrability for Severe Impairment Users

International Journal of Advanced Robotic Systems, 2013
A significant number of individuals with severe motor impairments are unable to control their wheelchair using a standard joystick. Even when they can facilitate the control input, navigation in a confined space or crowded environments is still a great ...
Razali Tomari, Yoshinori Kobayashi, Yoshinori Kuno   +2 more
doaj   +1 more source

Manoeuvring and Motion Control of a Hydrofoil

IFAC Proceedings Volumes, 1987
Computer-aided design techniques are described and demonstrated in studies associated with the regulation of pitch, roll, heave and yaw of a 31 m surface piercing hydrofoil. The procedures outlined are effected by way of a comprehensive suite of software for control system data processing which is employed in the transformation of the basic model into ...
R. Whalley, P.C. Gregory
openaire   +1 more source