Results 21 to 30 of about 73,862 (310)
Design of Batteries for a Hybrid Propulsion System of a Training Aircraft
Energies, 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
Analytical, circle-to-circle low-thrust transfer trajectories with plane change [PDF]
, 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
Displaced geostationary orbit design using hybrid sail propulsion [PDF]
, 2011 Because of an increase in the number of geostationary spacecraft and the limits imposed by east–west spacing requirements, the geostationary orbit is becoming congested. To increase its capacity, this paper proposes to create new geostationary slots by
Becerra V. M. +14 more
core +1 more source
Overview on hybrid propulsion [PDF]
Progress in Propulsion Physics, 2011 Aside of research works, this historical survey shows propulsion units used by students for small satellites and for gas generation, or those for the Space Ship One, even if LOx/HTPB was studied and tested in large motors for its potential very low cost; however, this combination highlights a series of technical problems without any performance ...
openaire +1 more source
Techno-economic investigation of alternative propulsion systems for tugboats
Energy 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
Safety verification of a fault tolerant reconfigurable autonomous goal-based robotic control system [PDF]
, 2007 Fault tolerance and safety verification of control systems are essential for the success of autonomous robotic systems. A control architecture called Mission Data System (MDS), developed at the Jet Propulsion Laboratory, takes a goal-based control ...
Braman, Julia M. B. +2 more
core +1 more source
Energy Saving Potential of Hybrid Propulsion System for Fishing Vessels in Indonesia [PDF]
E3S Web of ConferencesIndonesia, 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
Analysis Leading to the Design of a Hybrid Gas-Electric Multi-Engine Testbed
Aerospace, 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]
E3S 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
A novel interplanetary communications relay [PDF]
, 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