Results 251 to 260 of about 73,378 (313)
Electromagnetic-force characteristics of EDS high-speed maglev with tilting angle. [PDF]
Sci RepFu L +7 more
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Development of a Cuttlefish-Inspired Amphibious Robot with Wave-Motion Propulsion and Rigid-Flexible Coupling. [PDF]
Biomimetics (Basel)Gao Y, Pancheri F, Lueth TC, Sun Y.
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World of Transport and Transportation, 2016
The authors presented a conceptual idea of a high-speed mainline with a maximum speed of 400–450 km/h. The use of rotary engines requires more energy at high speeds, there are difficulties with current collection, wheel-rail adhesion, etc. At the same time, the use of a linear traction motor at low speeds is not justified from an economic point of view,
M. D. Glushchenko, I. O. Goryunov
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The authors presented a conceptual idea of a high-speed mainline with a maximum speed of 400–450 km/h. The use of rotary engines requires more energy at high speeds, there are difficulties with current collection, wheel-rail adhesion, etc. At the same time, the use of a linear traction motor at low speeds is not justified from an economic point of view,
M. D. Glushchenko, I. O. Goryunov
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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 Integration for a Hybrid Propulsive-Lift System
SAE Technical Paper Series, 1974<div class="htmlview paragraph">In a discussion of STOL vehicles with conventional high-lift devices, the need for efficient power-augmented lift systems is presented and the implications of quiet operation are noted. The underlying philosophy of a promising hybrid lift system with major interactions between aerodynamic, thermodynamic, acoustic ...
M. K. Bowden, J. H. Renshaw, H. S. Sweet
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Hybrid-Electric Propulsion for Aircraft
Journal of Aircraft, 2015Against a background of increasing energy demand and rising fuel prices, hybrid-electric propulsion systems have the potential to significantly reduce fuel consumption in the aviation industry, particularly in the lighter sectors. By taking advantage of both electric motor and internal combustion engine, hybrid-electric propulsion systems provide not ...
C. Friedrich, P.A. Robertson
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Electric/Hybrid-Electric Aircraft Propulsion Systems
Proceedings of the IEEE, 2021The idea of electric propulsion for transportation is not new; indeed, the first cars, nearly 200 years ago, were electric. However, our dependence on fossil fuels over the last 100 years is now being questioned, and as a global society, we are moving toward more-electric transportation solutions.
Patrick Wheeler +3 more
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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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