Flight test needs

BWB configuration

• Flight dynamics and control, especially at low speed
  Rationale: The aerodynamic design of large blended wing-body passenger aircraft is much more complex than conventional aircraft, which becomes particularly relevant in high-lift and dynamic maneuvering conditions where unsteady and partially separated flows occur.

H₂-powered TAW configuration

• Structural dynamics and aeroelasticity of the slender wings, equipped with novel technologies
  Rationale: The combination of disruptive ultra high aspect ratio wing designs and switching the fuel source to hydrogen is expected to have such large implications on the long range tube and wing aircraft design that significant modifications of the wings and the empennage are anticipated and must be tested.

Future long range aircraft propulsion

• Integration of novel powertrains or powertrain components.
• Unconventional engine integration
  Rationale: Switching the fuel source to hydrogen will have implications on the overall aircraft design and many individual components, with which there is currently insufficient experience. Another aspect of future propulsion designs is the integration of the novel systems with the airframe.

Some further needs are already envisaged with respect to :

• Modularity.
• Scaled and full-scale flight testing.