Results 21 to 30 of about 98,572 (312)

Designing Electric Propulsion Systems for UAVs [PDF]

open access: yes, 2011
Due to the advantages of electric motors and electric batteries, the electric propulsion systems are widely used in UAVs [1,2]. The UAV's performance and endurance, the payload capacity and the flight time of the vehicle are affected highly by the structure and design of the electric propulsion system. In this paper, a new systematic design methodology
Mohamed, Mohamed Kara   +2 more
openaire   +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

Design Tradeoffs in Full Electric, Hybrid and Full Chemical Propulsion Communication Satellite

open access: yesSakarya University Journal of Computer and Information Sciences, 2019
Full electric propulsion system becomes popular recently and getting more common in the communication satellite industry. Full electric or hybrid propulsion selection causes results in significant reduction in satellite propellant mass. Conventional full
Ü.cezmi Yılmaz, İbrahim Oz
doaj   +1 more source

Analytical, circle-to-circle low-thrust transfer trajectories with plane change [PDF]

open access: yes, 2013
Orbit averaging techniques are used to develop analytical approximations of circle-to-circle low-thrust trajectory transfers with plane-change about the Sun.
Appourchaux T.   +5 more
core   +1 more source

A Proposal for a Simplified Systematic Procedure for the Selection of Electric Motors for Land Vehicles with an Emphasis on Fuel Economy

open access: yesMachines, 2023
The selection of the electric motor for the propulsion system in electric vehicles is a crucial step, as it determines the final performance of the vehicle. The design of the propulsion system of an electric vehicle, although similar in principle to that
Albin Bajrami, Matteo Claudio Palpacelli
doaj   +1 more source

Hybrid Electric Aircraft Propulsion Case Study for Skydiving Mission

open access: yesAerospace, 2017
This paper describes a case study for applying innovative architectures related to electrified propulsion for aircraft. Electric and hybrid electric propulsion for aircraft has gained widespread and significant attention over the past decade.
Richard Glassock   +3 more
doaj   +1 more source

Feasibility Analysis on Electric Transformation of SW1 Unmanned Aerial Vehicle

open access: yesHangkong gongcheng jinzhan, 2020
Electric aircraft is booming in the field of general aviation at home and abroad, and affects the future development direction of aviation. Using electric propulsion technology to transform unmanned aerial vehicle(UAV) can greatly improve the safety ...
ZOU Ning   +3 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

A novel interplanetary communications relay [PDF]

open access: yes, 2010
A case study of a potential Earth-Mars interplanetary communications relay, designed to ensure continuous communications, is detailed. The relay makes use of orbits based on artificial equilibrium points via the application of continuous low thrust ...
Andersson G.   +12 more
core   +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

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