Results 61 to 70 of about 356,726 (251)

Kite dynamics for ship propulsion

, 2013
Kite propulsion has emerged as an attractive means to harness wind power in a way that yields environmental and financial benefits. An understanding of the dynamics that affect kite motion and the resulting forces is required to facilitate the design and
Dadd, George M.
core   +1 more source

An Integrated Numerical and Bollard Pull Evaluation Approach for Early‐Stage Resistance and Thrust Assessment of a Small Craft

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Early‐stage hydrodynamic assessment of slender multihull vessels is challenged by limited geometric maturity, uncertain propulsion integration, and strong sensitivity to operating conditions. Under such constraints, reliance on a single analytical or numerical method may lead to misleading design decisions due to oversimplification or ...
Chairat Napasaksri, Napat Intaraksa, Chalermkiat Nuchturee, Ramil Kesvarakul, Sarawuth Srinakaew   +4 more
wiley   +1 more source

Designing ZV and ZVD Input Shapers Using the Designed Fixed Output Response Method to Suppress Residual Vibration of Overhead Crane Systems With Trolley Traveling and Payload Hoisting

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Classical Zero Vibration (ZV) and Zero Vibration and Derivative (ZVD) input shapers are designed around a fixed nominal natural frequency and cannot accommodate the time‐varying dynamics introduced when an overhead crane simultaneously travels and hoists a payload.
Mohammad Alfares, Khaled Alhazza
wiley   +1 more source

Energy and Exergy Efficiency Analysis of Sealing Steam Condenser in Propulsion System of LNG Carrier

Naše More (Dubrovnik), 2017
In ship propulsion systems today diesel engines are dominant, but steam propulsion systems prevail in one type of ships and that are LNG carriers. Such steam propulsion systems consist of many different components.
Vedran Mrzljak, Igor Poljak, Vedran Medica-Viola   +2 more
doaj   +1 more source

An experimental prediction method of power increases of a cruise ship with podded propulsion in waves

Zhongguo Jianchuan Yanjiu, 2020
Objectives This paper aims to expand the prediction method of a power increase in waves for ships with podded propulsion, and to predict the power increase of a luxury cruise ship in actual seas through model experimentations.Methods A self-propulsion ...
FENG Peiyuan, WU Yongshun, FENG Yi, XIONG Xiaoqing   +3 more
doaj   +1 more source

Mechanical and Ballistic Performance of Composites Containing Aramid/EVA/Graphene‐Clay Nanostructured HDPE Laminates

Polymer Composites, EarlyView.
Ballistic tests using a novel composite configuraion. ABSTRACT Aramid fibers are extensively utilized in personal protective equipment owing to their lightweight and superior properties. This study proposes a novel composite structure comprising aramid fabric, EVA hotmelt films, and graphene‐clay nanostructured HDPE laminate, totalizing 20 repeated ...
Vagner Grison, Heitor Luiz Ornaghi Júnior, Rafael Rodrigues Dias, Iaci Pereira Miranda, Clarisse Rufino, Caio Bittencourt, Daiane Romanzini, Ademir José Zattera, Diego Piazza   +8 more
wiley   +1 more source

Linear System Identification and Control of a Low‐Cost High‐Performance Omnidirectional Marine Surface Vehicle for Swarming Applications

Journal of Field Robotics, EarlyView.
ABSTRACT Marine operations traditionally rely on human intervention, a costly and disruptive method. Autonomous surface vehicles (ASVs) offer a powerful alternative, capable of operating autonomously, for extended periods, and with various sensors for various missions.
Ayman El Qemmah, Gianni Cario, Alessandro Casavola, Marco Lupia, Francesco Tedesco   +4 more
wiley   +1 more source

Numerical Study of the Energy-Saving Effect of the Gate Rudder System

Journal of Marine Science and Engineering
Energy-saving device (ESD) plays an important role in mitigating the emission of greenhouse gases in ship industry. It is necessary to study a promising ESD, a gate rudder, for its great potential in promoting energy efficiency.
Hujia Cui, Donglei Zhang, Yuan Kong, Xianzhou Wang   +3 more
doaj   +1 more source

Design and Testing of a Minimal Configuration Underwater Micro‐Glider: Automating Lake and Reservoir Monitoring

Journal of Field Robotics, EarlyView.
ABSTRACT Uncrewed underwater vehicles (UUVs) have transformed oceanographic research through autonomous data gathering. Similarly, lake and other aquatic research can potentially be automated and transformed. However, UUVs would need to be smaller, lighter, less complex, and cheaper than currently available to make them more practical and user‐friendly
James M Rand, Alan Hunter, Danielle Wain, Lee D Bryant   +3 more
wiley   +1 more source

Formation Control With Obstacle Avoidance of Underwater Swarms Based on Relative Visual Feedback

Journal of Field Robotics, EarlyView.
ABSTRACT Underwater multi‐robot and swarm systems require advanced methodologies for controlling collective behavior. Conventional single‐robot techniques, such as tethering, sonar imaging, and acoustic localization, are not scalable or effective for swarm applications.
Andrea Infanti, Saverio Iacoponi, Saif Alameri, Mohamed El Hanbaly, Mohammed Tarnini, Cesare Stefanini, Giulia De Masi, Federico Renda   +7 more
wiley   +1 more source