Blended wing body configurations continue to interest NASA, with joint tests using a 13ft-wingspan model in the 22ft Subsonic Tunnel at the NASA Langley Research Center.

The Flying-V concept is supported by KLM.

The CityBird is a low-wing configuration concept airliner with aft-mounted engines, a small and faired landing gear and a high-lift system designed for short take-off and landing operations from inner-city airports.

An artist’s rendering of NASA's STARC-ABL concept hybrid-electric propulsion aircraft.

The EU CleanSky Hyper-F research project, which involves the DLR, is one of several projects researching boundary layer-ingesting propulsion for new airliners.