Abstract
This paper discloses a new algorithm, called sustainable supersonic fuel flow method, to complement the conceptual design of future supersonic aircraft with pollutant and greenhouse gases emissions estimation. Starting from already existing algorithms currently used to assess the environmental impact of already developed and operating aircraft, the authors suggest revisions to improve the formulations, thus extending their application. Specifically, this paper has two objectives: to support the design of future supersonic aircraft and to evaluate the impact of the exploitation of more sustainable aviation fuels, with special focus on biofuels and biofuel blends, since the conceptual design stage. The core of the algorithm developed to predict in-flight emissions of a supersonic aircraft has been validated with public data of Concorde flight experiments. In addition, corrective factors accounting for the most recently developed and certified biofuels have been included in the formulation.
Highlights
Since the 2000s, the unprecedented growth in air travel demand of the previous decades has shaped the research activities of the aviation sector
This paper disclosed an algorithm to complement the conceptual design of future sustainable supersonic civil aircraft with pollutant and greenhouse gas emissions estimation
After a thorough review of currently certified biofuels, the paper focused on the revision of the fuel flow method by Boeing to extend its applicability to supersonic engines and to the exploitation of sustainable fuels
Summary
Since the 2000s, the unprecedented growth in air travel demand of the previous decades has shaped the research activities of the aviation sector. The available emission estimation methods rely on data which are publicly available from the ICAO databank as soon as the engine is certified, following the prescribed procedure which envisages the exploitation of traditional aviation fuels To overcome this limitation and extend the method to alternative fuels, it is important to collect all available information from the most recent research activity on biofuels and to understand the impact of each different type of biofuel on the aircraft emissions. This paper tackles both these shortcomings, providing useful guidelines for the estimation of emission indexes for the most interesting SAFs, and extending the FFM to cover the supersonic speed regime
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