Results 31 to 40 of about 2,244,284 (230)

50’ Sail Catamaran with Hybrid Propulsion, Design, Theoretical and Experimental Studies

open access: yesPolish Maritime Research, 2022
The development of modern lithium batteries and propulsion systems now allows the use of complex propulsion systems for vessels of various sizes. As part of the research and implementation project, a parallel hybrid drive system was designed, built and ...
Litwin Wojciech   +3 more
doaj   +1 more source

Introducing the Box-Wing Airframe for Hybrid-Electric Regional Aircraft: A Preliminary Impact Assessment

open access: yesApplied Sciences, 2023
The combination of new airframes with electric and hybrid-electric propulsion is a potential solution to decarbonize aviation. In this context, recent studies have proven that the box-wing airframe, if integrated on a hybrid-electric aircraft belonging ...
Karim Abu Salem   +2 more
doaj   +1 more source

Performance Analysis of a Hybrid Electric Ship by Real-Time Verification

open access: yesEnergies, 2022
International maritime transport organizations are proposing regulatory actions and strategies aimed at decarbonizing the sector to reduce its greenhouse gas (GHG) emissions, which currently constitute around 3% of the global total.
Juan P. Torreglosa   +3 more
doaj   +1 more source

An earth pole-sitter using hybrid propulsion [PDF]

open access: yes, 2010
In this paper we investigate optimal pole-sitter orbits using hybrid solar sail and solar electric propulsion (SEP). A pole-sitter is a spacecraft that is constantly above one of the Earth's poles, by means of a continuous thrust.
Colin R. Mcinnes   +4 more
core   +4 more sources

Aircraft electric power plants

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение
The paper presents a review of electrification of the existing propulsion systems and creating new hybrid propulsion systems based on the concept of more electric aircraft and all-electric aircraft in Russia and abroad.
A. D. Kondryakov, M. K. Leontiev
doaj   +1 more source

Technical and economic efficiency of the unconventional propulsion units use for civilian aircraft of various purposes

open access: yesВестник университета, 2023
In order to develop a methodological apparatus for assessing various stages of the life cycle of hybrid/electric propulsion units, the existing approaches to estimating the costs of developing, manufacturing and operating aircraft engines of the ...
A. R. Polyakov   +5 more
doaj   +1 more source

Exploring the Green-Oriented Transition Process of Ship Power Systems: A Patent-Based Overview on Innovation Trends and Patterns

open access: yesEnergies, 2023
The shipping industry has accelerated the transformation of its carbon emission reduction and decarbonization, and relevant patents are rapidly increasing, but the industry still lacks consensus on the low-carbon development route of ship propulsion ...
Minghan Sun   +3 more
doaj   +1 more source

Modeling and Investigation of a Turboprop Hybrid Electric Propulsion System

open access: yesAerospace, 2018
Hybrid electric propulsion in the aviation field is becoming an effective alternative propulsion technology with potential advantages, including fuel savings, lower pollution, and reduced noise emission.
Maria Cristina Cameretti   +4 more
doaj   +1 more source

Feasibility Study of Electrified Light-Sport Aircraft Powertrains

open access: yesAerospace, 2022
A theory-based aerodynamic model developed and applied to electrified powertrain configurations was intended to analyze the feasibility of implementing fully electric and serial hybrid electric propulsion in light-sport aircraft.
Madeline McQueen   +4 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

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