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Fuel cell systems provide a zero-emission and low noise solution for on-board power generation in aircraft. To assure safe and reliable fuel cell operation in aircraft, system testing has to be conducted under realistic operating conditions. On the one hand these conditions can hardly be simulated in laboratory; on the other hand evaluation of the systems with a wide-body aircraft like an Airbus A320 is inflexible, time and cost consuming. Therefore the aerodyne Antares DLR-H2 has been developed as a flying test bed to provide a system carrier for time and cost effective airborne fuel cell system testing.In this presentation the test platform Antares DLR-H2 will be described with the new fuel cell system generation and latest results, comprising laboratory measurements (fuel consumption, power output) and insights on the system design, especially focusing on the concept of direct hybridization, allowing a simple and therefore reliable possibility of coupling fuel cells and batteries.

The AlternativeVehicles Library (AV) allows to calculate the energy demand and optimize the energy management for conventional and alternative vehicle concepts. The components provided focus on the simulation of alternative power trains. Therefore models of energy storages and energy converters such as electric drives and fuel cells are included. The library was developed within the European research project Eurosyslib. The current version includes contributions of the DLR Institute of Robotics and Mechatronics and is distributed by the Bausch-Gall GmbH. Within this paper architecture and components of the AlternativeVehicles library are described. Exemplarily fuel consumptions of a conventional vehicle and a parallel hybrid vehicle are compared.