Results 11 to 20 of about 5,321 (215)

Multi-Objective, Multi-Disciplinary Design Optimization and Multi-Attribute Evaluation of Hybrid Rocket Motors Used for Manned Lunar Lander

open access: yesAerospace, 2023
This paper proposed a multi-objective, multi-disciplinary design optimization and multi-attribute evaluation method for the manned lunar lander descent stage.
Yang Liu   +5 more
doaj   +1 more source

Optimization and Analysis of Hybrid Electric System for Distributed Propulsion Tilt-Wing UAV

open access: yesIEEE Access, 2020
Hybrid electric distributed propulsion tilt-wing UAVs show unlimited application prospects due to their high propulsion efficiency and vertical take-off and landing capabilities.
Cheng He, Yuhong Jia, Dongli Ma
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

Optimization design and sensitivity analysis of diesel/battery hybrid propulsion system for polar icebreaker

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesFor the economic and environmental requirements of polar ice-breakers, a hybrid propulsion system composed of diesel generator sets and a rechargeable battery is proposed.
Wenlong DU, Fengxiang GUO, Li CHEN
doaj   +1 more source

Design of Batteries for a Hybrid Propulsion System of a Training Aircraft

open access: yesEnergies, 2021
In this article, we propose the parameters of a battery that would be suitable for the conceptual design of a small training aircraft. The mass design of the battery is based on the requirements for real training flights performed by students in pilot ...
Michal Janovec   +3 more
doaj   +1 more source

Energy Saving Potential of Hybrid Propulsion System for Fishing Vessels in Indonesia [PDF]

open access: yesE3S Web of Conferences
Indonesia, as the largest archipelagic country in the world, has a fishing vessel fleet dominated by conventional diesel engine-based propulsion systems.
Ma’arif Samsul   +2 more
doaj   +1 more source

Techno-economic investigation of alternative propulsion systems for tugboats

open access: yesEnergy Conversion and Management: X, 2021
In this paper, the main alternative propulsion systems based on internal combustion engines and batteries of a tugboat operating in harbour duties of the tugboat that include Emission Control areas are comparatively assessed.
Ömer Emre Karaçay   +1 more
doaj   +1 more source

Analysis Leading to the Design of a Hybrid Gas-Electric Multi-Engine Testbed

open access: yesAerospace, 2023
Given the increase in air traffic, the main challenges in aircraft design are in-flight emissions and noise heard by the community. These problems have thus far been solved by incremental improvements in aerodynamics, engine technology and operation.
Agata Kuśmierek   +3 more
doaj   +1 more source

Analysis of Key Technologies for New Green Marine Propulsion Systems [PDF]

open access: yesE3S Web of Conferences, 2020
The new green Marine propulsion system, as a new generation of marine propulsion, has advantages of strong mobility, low fuel consumption, low noise, safety and comfort.
Duan Zheng   +3 more
doaj   +1 more source

Experimental Research on the Energy Efficiency of a Parallel Hybrid Drive for an Inland Ship

open access: yesEnergies, 2019
The growing requirements for limiting the negative impact of all modes of transport on the natural environment mean that clean technologies are becoming more and more important.
Wojciech Litwin   +3 more
doaj   +1 more source

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