Results 21 to 30 of about 20,271 (75)
Polish Maritime Research, 2023 This article characterises the methodology for the endoscopic testing of a laboratory diesel engine used for testing marine fuels. The ‘Shadow’ measurement method used in the XLG3 type EVEREST digital endoscope, for quantitative and qualitative ...
Korczewski Zbigniew
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Zhongguo Jianchuan Yanjiu, 2021 Objectives This study addresses the problem of time-consuming simulation in the optimization design of underwater structures. Focusing on time-consuming and non-time-consuming targets and constraints, it proposes an optimization method for constrained ...
Jiachang QIAN +2 more
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Cross-Domain Communication Buoy System Based on Optimal Communication Link Selection
水下无人系统学报The existing marine buoy communication mode is single, with low reliability, high packet loss rate, and poor real-time performance, which cannot meet the needs of large-scale marine data acquisition and cross-domain communication.
Minghan XING +7 more
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Communication Technology of Far-Sea Cross-Domain Buoys Based on High Frequency Sky-Wave Propagation
水下无人系统学报High frequency(HF) sky-wave propagation is limited by the working frequency, and the antenna size meeting high gain and adapting to high sea conditions is large, so the application scenario is seriously limited.
Longzhong XIAO +3 more
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Analysis of Induced Current and Electromagnetic Safety of Bridge-Wire Electric Explosive Device
水下无人系统学报Based on the basic theory of electromagnetic fields, the formation of the equivalent antenna of an electric explosive device(EED) and its energy conversion process were analyzed, and CST software was used to simulate and model the formation of induced ...
Xiaonan ZHU +4 more
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Review of the Development on Load Reduction Methods for Water Entry of High-Speed Vehicles
水下无人系统学报The water entry process of high-speed vehicles involves complex fluid-structure interaction between multiple phase flows and vehicles, which can result in transient impact loads and potential structural damage.
Wei ZHENG +3 more
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水下无人系统学报In order to explore the evolution of the flow field structure and motion characteristics of the trans-medium submersible during the take-off and landing on water surface, the volume of fluid(VOF) multiphase flow model, the shear stress transfer(SST) k-ω ...
Deshun LU +3 more
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Numerical Simulation of Water Entry Process of Trans-Medium Vehicles
水下无人系统学报The trans-medium water entry process of vehicles is often accompanied by multiphase flow, cavitation, phase change, and turbulence instability, which not only heighten the complexity of the flow field, but also render the forces highly unsteady and ...
Pingan LIU +5 more
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Numerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under Ice Hole Constraint
水下无人系统学报In high-latitude areas, the icing period is inevitable during winter. In view of the special mechanical environment of ice cracks faced during underwater launching in low-temperature ice zones, it is of great engineering value to expand the application ...
Hao WANG +6 more
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Zhongguo Jianchuan YanjiuThe purpose of this work is to optimize the communication architecture for existing remotely-controlled ships to meet the challenges of network connectivity in diverse environments (e.g., ports, deep-sea, and polar regions), aiming to address the issues ...
Xinjue HU +5 more
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