Results 211 to 220 of about 4,993 (264)
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Development of a Hybrid Propulsion System
SNAME Propellers '84 Symposium, 1984For the propulsion of high speed vessels of the semi-displacement or planing type a propulsion system has been designed and tested at model scale which uses partially submerged controllable pitch propellers in semi-ducts for the high speed boost condition. For low speed cruising the same propellers operate fully wetted.
Claus F. L. Kruppa, Wolfgang Wuhrer
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Hybrid solar and laser propulsion
SPIE Proceedings, 2002Hybrid laser experiments have been conducted in a variety of high power/energy laser experiments: beat wave electron accelerators, rainbow and ignitor fusion, particle acceleration and double pulse laser propulsion schemes. Following our determination that the momentum coupling coefficient for burning targets is much higher than for cold targets, we ...
Michaelis, Max +3 more
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Trends in hybrid propulsion concepts
Proceedings of 14th International Power Electronics and Motion Control Conference EPE-PEMC 2010, 2010Nowadays many different types of hybrid propulsion systems exist. For independent traction, i.e. automotive drive systems especially, energy storage of driving medium is essential. The main task of hybrid propulsion is to diminish or totally eliminate green house gas (GHG) emissions.
Mindl Pavel, Cerovsky Zdenek
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Hybrid Propulsion System for Satellite
31st AIAA International Communications Satellite Systems Conference, 2013Nowadays Environmental concerns are in the forefront of public attention and it’s destined to increase its importance for the future. To this aim Clean Technologies for Space are required to be adopted for the future in order to contribute to the reduction of the environmental impact of Space Programmes.
Loredana Sollazzo +5 more
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Hybrid propulsion transfers to the Moon
2012This work analyzes special Earth-Moon transfers that make use of both chemical and solar electric propulsion. A first high-thrust, low-Isp impulse is used to place the spacecraft into an exterior-like low-energy transfer to the Moon, possibly performing a lunar gravity assist.
G. Mingotti +2 more
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Hybrid electric chemical propulsion
21st Joint Propulsion Conference, 1985Abstract : A spacecraft propulsion concept that uses a combination of electrical energy and chemical energy for thrust is explored using thermodynamic modeling calculations. The essence of this concept consists of adding a carefully chosen amount of O2 or F2 oxidizer to the propellant flow of a conventional H2 electrothermal thruster.
J. E. Pollard, R. B. Cohen
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Propulsion system design of electric and hybrid vehicles
IEEE Transactions on Industrial Electronics, 1997There is a growing interest in electric and hybrid-electric vehicles due to environmental concerns. Efforts are directed toward developing an improved propulsion system for electric and hybrid-electric vehicles applications. This paper is aimed at developing the system design philosophies of electric and hybrid vehicle propulsion systems. The vehicles'
Mehrdad Ehsani +2 more
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Preliminary pyrolysis and combustion study for the hybrid propulsion.
46th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2010The hybrid propulsion can be of interest for civilian applications such as space tourism or small size launchers (1000 N thrust). The PRISME institute from the University of Orleans is working since 2007 on related activities. PRISME aims at studying numerically and experimentally a hybrid rocket engine and more specifically the chemical reactions ...
Gascoin, Nicolas, Gillard, Philippe
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Hybrid Thermionic Space Reactors for Power and Propulsion
Nuclear Technology, 1994A thermo-hydrodynamic-neutronic analysis is performed for a fast, uranium carbide (UC) fueled space-craft nuclear in-core thermionic reactor. The thermo-hydrodynamic analysis shows that a hybrid thermionic spacecraft nuclear reactor can be designed for both electricity generation and nuclear thermal propulsion purposes.
SAHIN, S, KENNEL, EB
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Hybrid Propulsion of Railway Vehicles
Machines, Technologies, Materials, 2009Hybrid propulsion of railway vehicles represents a modern solution of propulsion with the basic object of reducing fuel consumption and harmful emissions. The realized designs of such propulsion show the success of achieving the set goal. This paper explains in more detail the possible designs of the hybrid propulsion of railway vehicles, the ...
Zavada, Josip +2 more
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