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Robin Fonk, Tobias Graf, Sven Paeßler, Christiane Bauer, Josef Kallo and Caroline Willich
Hybrid electric aircraft with a powertrain based on fuel cells and batteries can reduce climate-active emissions in aviation. In a direct hybrid powertrain, the fuel cell and the battery are connected in parallel, without a DC/DC converter balancing thei...
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Tobias Graf, Robin Fonk, Christiane Bauer, Josef Kallo and Caroline Willich
The climate impact of aviation can be reduced using powertrains based on hydrogen fuel cells and batteries. Combining both technologies in a direct-hybrid without a DC/DC converter is a promising approach for light-weight systems. Depending on the power ...
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Jan Erik Zeriadtke, Joël Martin and Viola Wartemann
The performance of hybrid rocket engines is significantly influenced by the fuel geometry. Burnback simulations, to determine the fuel surface and fluid volume, are therefore an important tool for preliminary design. This work presents a method for the s...
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Youssef Karout, Axel Curcio, Julien Eynard, Stéphane Thil, Sylvain Rodat, Stéphane Abanades, Valéry Vuillerme and Stéphane Grieu
The present paper deals with both the modeling and the dynamic control of a solar hybrid thermochemical reactor designed to produce syngas through the high-temperature steam gasification of biomass. First, a model of the reactor based on the thermodynami...
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Zhongda Huang, Andy Ogilvy, Steve Collins, Warren Hare, Michelle Hilts and Andrew Jirasek
A derivative-free optimization (DFO) method is an optimization method that does not make use of derivative information in order to find the optimal solution. It is advantageous for solving real-world problems in which the only information available about...
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Alexandre Richard, Xavier Roboam, Florent Rougier, Nicolas Roux and Hubert Piquet
This paper proposes an electric powertrain architecture for future hybrid electric aircrafts which structure is only composed of permanent magnet synchronous machines for both generators (PMSG) and motors (PMSM). The direct connection through an AC bus o...
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Rahmayati Alindra, Purnomo Sidi Priambodo and Kalamullah Ramli
Light Fidelity (LiFi) technology has gained attention and is growing rapidly today. Utilizing light as a propagation medium allows LiFi to promise a wider bandwidth than existing Wireless Fidelity (WiFi) technology and enables the implementation of cellu...
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M. A. Inayathullaah, N. Sivakumar, Ananthakrishnan Balasundaram, R. Arul and S. Angalaeswari
This paper presents a modeling and performance evaluation of a five-phase PMBLDC motor with different controllers to analyze its transients and dynamic response with time domain specifications. Four different types of speed controllers, namely an Adaptiv...
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Egor A. Danilov, Mikhail Veretennikov, Maria Dronova, Timofey Kalyakin, Andrey A. Stepashkin, Victor V. Tcherdyntsev and Vladimir Samoilov
Electrical and optical properties of graphene/silver nanoparticles hybrid suspensions intended for use in inkjet printing technologies were studied. Few-layered graphene particles were manufactured via a direct ultrasonic-assisted liquid-phase exfoliatio...
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Giuseppe Palaia, Karim Abu Salem and Alessandro A. Quarta
This paper proposes a conceptual analysis of the limitations related to the development (and integration) of hybrid?electric propulsion on regional transport aircraft, with the aim to identify a feasibility space for this innovative aircraft concept. Hyb...
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