Main Challenges and Goals of the H2020 STRATOFLY Project

Abstract As eluded in previous studies, with special reference to those carried out the European framework, some innovative high-speed aircraft configurations have now potential assure an economically viable fleet. They make use of unexploited flight routes stratosphere, offering a solution presently congested paths while ensuring minimum environmental impact terms emitted noise and green-house gasses, particularly during stratospheric cruise. Only dedicated multi-disciplinary integrated design approach could realize this, by considering airframe architectures embedding propulsion systems as well meticulously integrating crucial subsystems. In this context, starting from in-depth investigation current status activities, STRATOFLY project has been funded Commission, under framework Horizon 2020 plan, aim assessing type transport vehicle reach Technology Readiness Level (TRL) 6 2035, respect key technological, societal economical aspects. Main issues are related thermal structural integrity, low-emissions combined cycles, subsystems integration, including smart energy management, aspects impacting climate change, emissions social acceptance, economic viability accounting for safety human factors. This paper aims at summarizing main challenges goals project, highlighting steps forward past Projects underlying next planned goals.