Browse Publications Technical Papers 2018-01-1933
2018-10-30

Energetic, Environmental and Range Estimation of Hybrid and All-Electric Transformation of an Existing Light Utility Commuter Aircraft 2018-01-1933

Today it is necessary to face the energetic, environmental, and safety-related issues of a significant industrial sector such as aeronautic one. Even if it is a marginal contributor to today global GHG emissions (less than 3%), the increasing mobility of people is determining a continuous increase of air traffic with an annual rate of growth around 5%. Consequently, aviation will need to face four fundamental problems for the future: 1. the overall impact of aviation is expected to grow up to 10÷15% of global GHG emissions by 2050; 2. the emissions of pollutants by commercial aviation affects the fragile atmospheric layers in the low stratosphere; 3. the increasing age of the flying fleet also deals with increasing maintenance and safety issues; 4. the dependence on fossil fuels which deals strictly with areas which are characterized by significant problems of geopolitical instability and oscillations of prices. In this scenario, substantial innovations are expected for both forcing a reduction of energy consumption and environmental impacts and reducing the age of the global fleets. They mostly relate to the decrease in the weights and the introduction of environmental friendly propulsion systems, such as hybrid and all-electric propulsion. This paper will produce the first law, the second law, and environmental assessments of different green propulsion architectures including all electric and hybrid against actual aircraft in a reference case. It also introduces new formulations of the range equations for hybrid and all-electric airplanes.

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