WP2: Conceptual guidelines and common experimentation plan elaboration


Lead: ESA-ESTEC

Involved partners: EADS IW, MBDA, AST, ONERA, DLR, CIRA, JAXA


Progress beyond the state of the art

At present, there are multiple on-going European and Japanese projects focusing on high speed transport which cover a wide range of vehicle concepts and technologies depending on the selected cruise Mach numbers, engine cycles, fuels, materials, and airframe integration. HIKARI’s main objective is to foster international cooperation by analyzing the various technological goals, identifying possible synergies, and rationalizing research efforts. Since the project is structured around sharing experience and vision, this task will be the leading one of the whole project.

Main Activities

2.1.1 Derivation of High-Level Requirements for High-Speed Vehicles: This task will define the high-level requirements that will serve as inputs to the market analysis work package. This entails in a first place the potential ranges, passenger capacity, fuel-type, trajectories (point-to-point) and time of flight a typical high-speed concept should be able to deliver. Most of these requirements will be based upon existing projects on high-speed concepts.

2.1.2 Performance Assessment of High-Speed Concepts: Presentations of high-speed concepts and technology developments in terms of aerodynamic, propulsion, and structural weight along with payload capacity, fuel, trajectories, and ranges will be made. After clarification of the obtained performances by all partners, a vehicle performance map along with potential constraints and limitations will be drafted in a uniform way. From European side, different vehicles studied in national or European projects, such as ZEHST, ATLLAS, LAPCAT, ATLLAS2, LAPCAT2, will be addressed. This information will be exchanged a priori through the classic communications channels. After a first data exploration, a dedicated first workshop in Europe will create the opportunity to further clarify and detail any (lacking) information. This workshop shall allow participants to discuss directly any open questions related to the vehicle’s performance among all European and Japanese partners.

2.2.1 General layout of Conceptual Guidelines: Based on the outcome of the market analysis (WP3) and the performance assessment, high level requirements and conceptual guidelines for high-speed vehicle transport and their related technologies will be derived. The market survey and a first layout of these conceptual guidelines will form the basis of a 2nd workshop to be held in Japan. Following topics will be addressed: materials, propulsion (engines, tanks, peripherals, etc.), aerodynamics (from low to high-speed), control (GNC, HMS, etc.), safety, performances (range, specific fuel consumption), environmental impact (high altitude emissions, sonic boom), societal acceptance. To avoid any gap in on-going technology development for high-speed vehicles, the consortium will partially open up the workshop to external companies, research institutions or universities.

2.2.2 Harmonization of Roadmaps: These derived guidelines will then be further combined with the already available roadmaps elaborated within the EC-projects ATLLAS, LAPCAT, ATLLAS2, LAPCAT2, and CHATT, as well as within ZEHST and other projects, to define a harmonized roadmap seen from an international perspective. Potential points for international cooperation on joint technology development and experimental campaigns will be worked out as well.

2.2.3 International Guidelines and Roadmaps for High-Speed Vehicles & Technologies: The elaboration of these guidelines and roadmap definition will be iterated among all partners through the different communication channels and a dedicated 3rd workshop will be organized in Europe together with the Japanese partners. One of the objectives is to set-up on-ground and/or in-flight experimentation proposals by 2020 or earlier which cover dedicated technologies (e.g. tanks, engines, materials…), multi-disciplinary integrated systems and/or conceptual vehicle designs. Here again, the consortium will partially open up the 3rd workshop to external companies, research institutions or universities to avoid any gap in on-going technology development for high-speed vehicles. At this point, part of the study outcome will be disseminated to third parties. This will give them the opportunity to provide additionally essential inputs to the overall guidelines and roadmap.

Expected Results

HIKARI is expected to provide technology roadmaps relying on synergies between all the different projects brought by the partners. In a first step, their performances in terms of range, payload, aerodynamic, propulsive and weight will be presented during a dedicated workshop by each of the partners involved. After a critical data analysis accompanied with clarifications by all partners, an overall map of the different vehicle performances and constraints will be laid out. This vehicle map shall allow an interaction with the market analysis of WP3. This interaction shall highlight the weak and strong points of these high-speed vehicle concepts from a commercial and operational point of view. This assessment shall also consider the optimal point of entry of these vehicles onto the market.

Once the vehicle map and the economic viability is addressed, a list of conceptual guidelines with respect to the vehicle, propulsion, materials, tanks, structures, active/passive cooling systems, flight control, aerodynamics will be drawn to meet the objectives for market introduction.

In a final step, the roadmaps provided to the EC (available from ATLLAS, LAPCAT, ATLLAS2 and LAPCAT2), along with the above guidelines, will allow to set up a general roadmap for vehicle concepts and their related technologies. National, European and Japanese technology developments will be taken into account.

As the overall work requires a clear and detailed understanding of each development objective, a close cooperation with all partners is a must. To ensure a clear exchange of ideas and information, the different steps will involve dedicated meetings in the form of three workshops where all partners are involved, including external entities which could contribute to the overall task.