Results 11 to 20 of about 491,279 (390)
Journal of Experimental Biology, 2006 In this JEB Classics paper, Sir James Gray and G. J. Hancock explained how spermatozoa are propelled by flagellar bending waves (Gray and Hancock, 1955). This paper was a lasting success because it provided an easy-to-understand solution to a complicated hydrodynamic problem, and because it provided a quantitative prediction of the swimming speed that ...
Brokaw, Charles J.
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Life-Cycle Assessment and Costing of Fuels and Propulsion Systems in Future Fossil-Free Shipping
Environmental Science and Technology, 2022 Future ships need to operate with low or possibly zero greenhouse gas (GHG) emissions while ensuring low influence on other environmental impacts and that the operation is economically feasible.
Fayas Malik Kanchiralla +4 more
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Present and future of aircraft carriers as a floating diplomatic and military means of deterrence [PDF]
INCAS Bulletin, 2011 The aircraft carrier is the most capable offshore military warship the mankind has ever build and is considered as a symbol of the absolute navy and national strenght. Construction of an aircraft carrier is having a great impact on country`s industry and
Miroslav KELEMEN +3 more
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Overview of Propulsion Systems for Unmanned Aerial Vehicles
Energies, 2022 Unmanned Aerial Vehicle (UAV) propulsion technology is significantly related to the flight performance of UAVs, which has become one of the most important development directions of aviation.
Bowen Zhang +3 more
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Energies, 2020 Gas turbine engines are required to operate at both design and off-design conditions that can lead to strongly unsteady flow-fields and aerodynamic losses severely impacting performance.
Nishan Jain +6 more
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A Novel Integrated Gliding and Flapping Propulsion Biomimetic Manta-Ray Robot
Journal of Marine Science and Engineering, 2022 Bionic underwater robots are the intersection of biology and robotics; they have the advantages of propulsion efficiency and maneuverability. A novel vehicle that combines a gliding and flapping propulsion inspired by a manta ray is presented in this ...
Daili Zhang +4 more
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Principle, Fabrication and Emerging Applications of Nanobottle Motor
Energies, 2022 Micro/nano-motors play an important role in energy, environment, and biomedicines. As a new type of nano-motors, nanobottles attract great attention due to their distinct advantages of a large cavity, high specific surface area, bionic streamline ...
Qingyuan Liu +4 more
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Aircraft Hybrid-Electric Propulsion: Development Trends, Challenges and Opportunities
Journal of Control Automation and Electrical Systems, 2021 The present work is a survey on aircraft hybrid electric propulsion (HEP) that aims to present state-of-the-art technologies and future tendencies in the following areas: air transport market, hybrid demonstrators, HEP topologies applications, aircraft ...
M. A. Rendón +3 more
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Mini/Micro/Nano Scale Liquid Metal Motors
Micromachines, 2021 Swimming motors navigating in complex fluidic environments have received tremendous attention over the last decade. In particular, liquid metal (LM) as a new emerging material has shown considerable potential in furthering the development of swimming ...
Li Liu, Dawei Wang, Wei Rao
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Power Prediction Method for Ships Using Data Regression Models
Journal of Marine Science and Engineering, 2023 This study proposes machine learning-based prediction models to estimate hull form performance. The developed models can predict the residuary resistance coefficient (CR), wake fraction (wTM), and thrust deduction fraction (t). The multi-layer perceptron
Yoo-Chul Kim +5 more
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