Abstract
Engineering improvements, technology enhancements and advanced operations have an important role to play in reducing aviation fuel consumption and environmental emissions. Currently several organizations worldwide are focusing their efforts towards large collaborative projects whose main objective is to identify the best technologies or routes to reduce the environmental impact and fuel efficiency of aircraft operations. The paper describes the capability of a multi-disciplinary optimization framework named GATAC (Green Aircraft Trajectories under ATM Constrains) developed as part of the Clean Sky project to identify the potential cleaner and quieter aircraft trajectories. The main objective of the framework is to integrate a set of specific models and perform multi-objective optimization of flight trajectories according to predetermined operational and environmental constraints. The models considered for this study include the Aircraft Performance Model, Engine Performance Simulation Model and the Gaseous Emissions Model. The paper, further discusses the results of a test case to demonstrate trade-offs between fuel consumption, flight time and NOx emissions that the trajectory optimization activity achieves at a primary level. It thereby forms the basis of a complete reference base-line trajectory which will be used to determine more accurate environmental gains that can be expected through optimization with the integration of more models within the framework in the future.
Highlights
The air transport industry today is paying a lot of attention to growing public concern about the environmental issues of air pollution, noise and climate change
The multi-disciplinary optimization framework has been implemented in order to investigate the potential of greener trajectories as future possible solutions for the reduction of aircraft environmental impact
The multi-objectives optimization studies have been carried out in GATAC frame work focusing on minimization of conflicting objectives, such as fuel burnt versus flight time and NOX versus flight time for long range trajectories
Summary
The air transport industry today is paying a lot of attention to growing public concern about the environmental issues of air pollution, noise and climate change. Clean Sky is a European public private partnership between the aeronautical industry and the European Commission It will advance the demonstration, integration and validation of different technologies making a major step towards the achievement of the environmental goals set by ACARE (Advisory Council for Aeronautics Research in Europe). The ACARE Vision 2020 and associated Strategic Research Agendas (SRAs) have successfully steered European aeronautics research in recent years by setting the objectives of reducing CO2 by 50%, NOx by 80% and Noise by 50% compared to year 2000 [1] Ability to meet these challenges only is possible with a strong commitment to the vigorous evolution of technologies and achieving new breakthroughs.
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