I'm too lazy to find the thread, but we had been discussing how all airliner designs are variations on a single theme. I'd mentioned that fuel efficiency was one thing that might drive adoption of new approaches, and there's been a recent test of one such design:
https://arstechnica.com/cars/2020/09...-first-flight/
It's still very early testing, but aerodynamic models suggest that the design should be able to shave 20% off fuel use.
https://arstechnica.com/cars/2020/09...-first-flight/
It's still very early testing, but aerodynamic models suggest that the design should be able to shave 20% off fuel use.
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