This proposal describes the third core project of the Graphene Flagship. It forms the fourth phase of the FET flagship and is characterized by a continued transition towards higher technology readiness levels, without jeopardizing our strong commitment to fundamental research. Compared to the second core project, this phase includes a substantial increase in the market-motivated technological spearhead projects, which account for about 30% of the overall budget. The broader fundamental and applied research themes are pursued by 15 work packages and supported by four work packages on innovation, industrialization, dissemination and management. The consortium that is involved in this project includes over 150 academic and industrial partners in over 20 European countries.

SARAH is concerned with establishing novel holistic, simulation-based approaches to the analysis of aircraft ditching. It is build up from a consortium of experts from OEM industries, experienced suppliers of simulation technologies, established research institutions and representatives of the certification authorities. Results of SARAH are expected to support a performance-based regulation and certification for next generation aircraft and helicopter and to enhance the safe air transport as well as to foster the trustworthiness of aviation services. Aircrafts and helicopters often travel above water and thus have to prove a safe landing under emergency conditions. The specific challenge is to minimize the risk of injury to passengers and to enable safe evacuation. Accordingly, the motion of the aircraft/helicopter along with the forces acting on the structure are studied for controlled water impact during the design phase of an aircraft. Ditching has close links with crash simulation, but also distinctive features. Examples refer to hydrodynamic slamming loads on airborne vehicles and complex hydromechanics (partially at very large forward speeds) as well as the interaction of multi-phase fluid dynamics (involving air, water, and vapor phases) and structure mechanics. Design for ditching involves more than the analysis of loads and subsequent strengthening of the structure. It often requires adjustment campaigns for the handling of the vehicle during approach and the identification of favorable approach/flight-path conditions in line with the pilots flying capabilities to minimize the remaining kinetic energy of the vehicle to be transferred into the water. In conclusion, a pressing need for more advanced studies to support the development of next-generation, generalized simulation-based ditching-analysis practices is acknowledged by all stakeholders. The public interest in safety makes this proposal an ideal candidate for a European research proposal.

This proposal describes the third stage of the EC-funded part of the Graphene Flagship. It builds upon the results achieved in the ramp-up phase (2013 - 2016) and the first core project (2016 - 2018), and covers the period April 2018 - March 2020. The progress of the flagship follows the general plans set out in the Framework Partnership Agreement, and the second core project represents an additional step towards higher technology and manufacturing readiness levels. The Flagship is built upon the concept of value chains, one of which is along the axis of materials-components-systems; the ramp-up phase placed substantial resources on the development of materials production technologies, the first core project moved to emphasise components, and the second core project will move further towards integrating components in larger systems. This evolution is manifested, e.g., in the introduction of six market-motivated spearhead projects during the Core 2 project.

The challenge in rotorcraft design is always to improve payload-lifting capability, reduce fuel burn and increase the vehicle's range – the traditional objectives in aeronautical design. The Fast Rotorcraft IADP of Clean Sky 2 consists of two flight demonstrators, the Next Generation Civil TiltRotor (NGCTR) [leader: Leonardo Helicopters] and the RACER compound helicopter [leader: Airbus Helicopters]. These two fast rotorcraft concepts aim to deliver superior vehicle productivity and performance, and through this economic advantage to users. NGCTR aims to design, build and fly an innovative next generation civil tiltrotor technology demonstrator. The configuration will go beyond current architectures of this type of aircraft and will involve tilting proprotors mounted in fixed nacelles at the tips of the wing. The wing will have a fixed inboard portion and a tilting outboard portion to minimize rotor downwash impingement in hover and increase efficiency. Demonstration activities will aim at validating the technologies/systems and operational concepts. The RACER (formerly LifeRCraft) aims at developing and flight-testing in 2020-2023 a full scale flightworthy demonstrator, which embodies the new European compound rotorcraft architecture. This architecture combines a lifting rotor with two lateral rotors at the tips of box-wings, in pusher configuration. This proposal presents the work plan 2020-2021 toward the achievement of the FRC IADP final objectives.

Current design methodologies used to characterise ice accretion and its effects on air vehicle components and power plant systems are mainly based on empirical methods, comparative analysis, 2D simulation tools and past experience gained on in-service products. Due to the associated uncertainties, cautious design margins are used, leading to conservative and non-optimised solutions. As future air vehicle and propulsive system architectures introduce radical design changes, it will no longer be possible to rely on the existing design methodologies, making future development extremely difficult to accomplish efficiently and within short development cycles that are demanded by customers and desired by industry. These difficulties are increased by the recent changes in certification regulations, in particular for Supercooled Large Droplets (SLD), which require manufacturers to certify their products against more stringent requirements. Snow also remains a challenge, especially for turbine engines and APUs. ICE GE