Results 11 to 20 of about 89,643 (315)

Optimisation of a Diesel-Electric Ship Propulsion and Power Generation System Using a Genetic Algorithm

open access: yesJournal of Marine Science and Engineering, 2021
In recent decades, the design of ship propulsion systems has been focusing on energy efficiency and low pollutant emissions. In this framework, diesel–electric propulsion has become a standard for many ship types and has proven its worth for flexible ...
Raphael Zaccone   +2 more
doaj   +1 more source

Prospects for the use of hydrogen technologies in commercial civil aviation [PDF]

open access: yesPrzegląd Komunikacyjny, 2023
: The use of hydrogen technologies is the most effective way to decarbonise long- haul transport - including commercial aviation. Two leading technical solutions introducing hydrogen into the propulsion systems of civil airliners are the use of fuel ...
Jacek Nowicki
doaj   +1 more source

A Review of Low-Power Electric Propulsion Research at the Space Propulsion Centre Singapore

open access: yesAerospace, 2020
The age of space electric propulsion arrived and found the space exploration endeavors at a paradigm shift in the context of new space. Mega-constellations of small satellites on low-Earth orbit (LEO) are proposed by many emerging commercial actors ...
George-Cristian Potrivitu   +6 more
doaj   +1 more source

Validation of a Test Platform to Qualify Miniaturized Electric Propulsion Systems

open access: yesAerospace, 2019
Miniaturized electric propulsion systems are one of the main technologies that could increase interest in CubeSats for future space missions. However, the integration of miniaturized propulsion systems in modern CubeSat platforms presents some issues due
Fabrizio Stesina
doaj   +1 more source

The View of Micropropulsion Technology for China’s Advanced Small Platforms in Deep Space

open access: yesSpace: Science & Technology, 2022
In this paper, micropropulsion systems are analyzed in conjunction with the various mission requirements of China’s deep space exploration. As a great challenge facing the world, deep space exploration can be enabled only in a few countries with a ...
Yanming Wei   +9 more
doaj   +1 more source

Propulsion Drive Models for Full Electric Marine Propulsion Systems [PDF]

open access: yes2007 IEEE International Electric Machines & Drives Conference, 2007
Integrated full electric propulsion systems are being introduced across both civil and military marine sectors. Standard power system analysis packages cover electrical and electromagnetic components but have limited models of mechanical subsystems and their controllers.
Apsley, JM   +9 more
openaire   +5 more sources

A Back–Forward Approach-Based Efficiency Performance Analysis Model for Hybrid Electric Propulsion Ships Using the Holtrop–Mennen Method

open access: yesJournal of Marine Science and Engineering, 2023
Due to tightening regulations on exhaust emissions from ships, there is a growing need to develop electric or hybrid electric propulsion systems to replace conventional diesel-based ship power systems.
Soon Ho Hong, Dong Min Kim, Sun Je Kim
doaj   +1 more source

Development of a Marine LPG-Fueled High-Speed Engine for Electric Propulsion Systems

open access: yesJournal of Marine Science and Engineering, 2022
As regulations on emissions from ships become stricter worldwide, new propulsion systems and the use of eco-friendly fuel are being introduced as alternative solutions.
Kang Woo Chun, Myongho Kim, Jae-Jung Hur
doaj   +1 more source

Hybrid Propulsion Systems for Remotely Piloted Aircraft Systems

open access: yesAerospace, 2018
The development of more efficient propulsion systems for aerospace vehicles is essential to achieve key objectives. These objectives are to increase efficiency while reducing the amount of carbon-based emissions.
Mithun Abdul Sathar Eqbal   +3 more
doaj   +1 more source

Comparative Analysis on AC and DC Distribution Systems for Electric Propulsion Ship

open access: yesJournal of Marine Science and Engineering, 2022
Decarbonization is an ongoing issue in the shipping industry, and electric propulsion systems are being proposed as alternative solutions to satisfy this requirement.
Seongwan Kim, Hyeonmin Jeon
doaj   +1 more source

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