Results 1 to 10 of about 1,734 (183)

Study on Dynamic Behavior of Unmanned Surface Vehicle-Linked Unmanned Underwater Vehicle System for Underwater Exploration [PDF]

open access: yesSensors, 2020
This paper focuses on motion analysis of a coupled unmanned surface vehicle (USV)−umbilical cable (UC)−unmanned underwater vehicle (UUV) system to investigate the interaction behavior between the vehicles and the UC in the ocean environment ...
Mai The Vu   +6 more
doaj   +8 more sources

Study on Unmanned Hybrid Unmanned Surface Vehicle and Unmanned Underwater Vehicle System [PDF]

open access: yes한국해양공학회지, 2020
Underwater operating platforms face difficulties regarding power supply and communications. To overcome these difficulties, this study proposes a hybrid surface and underwater vehicle (HSUV) and presents the development of the platform, control ...
Han-Sol Jin   +6 more
doaj   +2 more sources

Intelligent Navigation for a Solar Powered Unmanned Underwater Vehicle

open access: yesInternational Journal of Advanced Robotic Systems, 2013
In this paper, an intelligent navigation system for an unmanned underwater vehicle powered by renewable energy and designed for shadow water inspection in missions of a long duration is proposed.
Francisco García-Córdova   +1 more
doaj   +2 more sources

Thermodynamic Simulation Analysis of Variable Buoyancy Device for Underwater Gliders

open access: yes水下无人系统学报, 2022
The heat generated by its driving motor and pump affects the internal structure of the device when a variable-buoyancy device on an underwater glider is operating, thus posing risks to its normal operation.
Hong-chang ZHAO   +2 more
doaj   +1 more source

Recent study progress of underwater sound absorption coating

open access: yesEngineering Reports, 2023
Based on the recent development of underwater sound absorption coatings, this paper analyzes the evolution of underwater sound absorption coatings from two aspects: traditional structures and metamaterials.
Zhicheng Zhang, Yanbiao Zhao, Nansha Gao
doaj   +1 more source

Transmission of images by unmanned underwater vehicles [PDF]

open access: yesAutonomous Robots, 2019
As an acoustic communications medium, water is characterized by frequency dependent attenuation, short range, very low bandwidth, scattering, and multi-path. It is generally difficult to acoustically communicate even terse messages underwater much less images.
Alice Danckaers, Mae L. Seto
openaire   +1 more source

Scheme Design and Key Technology Application of Multi-joint Unmanned Underwater Vehicle

open access: yesKongzhi Yu Xinxi Jishu, 2023
Concerning the challenges of limited operational capabilities of autonomous underwater vehicles and the impaired passability caused by the externally mounted propellers on the existing chained multi-body underwater vehicles, this paper presents an ...
HAN Tao   +4 more
doaj   +3 more sources

Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure

open access: yesDefence Technology, 2022
The initial geometric imperfection is one of the primary factors affecting the buckling behaviors of composite cylindrical shells under hydrostatic pressure.
Zhun Li   +3 more
doaj   +1 more source

Leak Detection and Localization in Multi-Grid Space Using Improved Gaussian Plume Model

open access: yesSensors, 2023
Leak detection and localization of liquid or gas is of great significance to avoid potential danger and reduce the waste of resources. Leak detection and localization methods are varied and uniquely suited to specific application scenarios.
Daquan Li, Gaigai Liu, Zhaoyong Mao
doaj   +1 more source

Shape optimization of a blended-wing-body underwater glider using surrogate-based global optimization method IESGO-HSR

open access: yesScience Progress, 2020
As a novel flying-wing configuration underwater glider, the blended-wing-body underwater glider (BWBUG) has the satisfactory hydrodynamic performance in comparison to the conventional cylindrical autonomous underwater gliders (AUGs).
Pengcheng Ye, Guang Pan
doaj   +1 more source

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