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- W2029543381 abstract "One of the crucial challenges of the aviation industry in upcoming years is to reduce emissions not only in the vicinity of airfields but also in cruise. Amongst other transport methods, airplanes emissions count for 3% of the CO2 emissions. Initiatives to reduce this include not only investing in more fuel-efficient aircrafts or adapting existing ones to make them more efficient (e.g. by fitting fuel-saving winglets), but also more actively researching novel propulsion systems that incorporate environmentally friendly technologies. The Boeing Company through its European subsidiary, Boeing Research and Technology Europe (BR&TE) in collaboration with industry partners throughout Europe is working towards this goal by studying the possible application of advanced batteries and fuel-cell systems in aeronautical applications. One example is the development of a small manned two-seater prototype airplane powered only by proton exchange membrane (PEM) fuel-cell stacks, which runs on compressed hydrogen gas as fuel and pressurized air as oxidant, and Li-ion batteries. The efficient all composite motorglider is an all electric prototype airplane which does not produce any of the noxious engine exhaust by-products, such as carbon dioxide, carbon monoxide or NOx, that can contribute to climate change and adversely affect local air quality. Water and heat are the only exhaust products. The main objective is to demonstrate for the first time in aviation history a straight level manned flight with fuel-cells as the only power source. For this purpose, the original engine of a super Dimona HK36TTC glider from Diamond Aircraft Industries (Austria) was replaced by a hybrid power system, which feeds a brushless dc electrical motor that rotates a variable pitch propeller. Amongst the many technical challenges encountered when developing this test platform are maintaining the weight and balance of the aircraft, designing the thermal management system and the power management between the two power sources [N. Lapeña-Rey, J. Mosquera, E. Bataller, F. Ortí, SAE 2007 Aerotech Congress & Exhibition, 2007 (Publication number: 2007-01-3906)]. The demonstrator airplane constitutes an example of the successful implementation of novel clean power sources in aviation. The detailed description of the airplane and its subsystems is given elsewhere [N. Lapeña-Rey, J. Mosquera, E. Bataller, F. Ortí, SAE 2007 Aerotech Congress & Exhibition, 2007 (Publication number: 2007-01-3906)]. This paper focuses specially on the power sources design and pre-flight tests giving special attention to those requirements derived from aerospace applications." @default.
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- W2029543381 date "2008-07-01" @default.
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- W2029543381 title "Environmentally friendly power sources for aerospace applications" @default.
- W2029543381 doi "https://doi.org/10.1016/j.jpowsour.2007.11.045" @default.
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