Flying-V could use 20% less fuel than the Airbus A350 | Hacker News
https://news.ycombinator.com/item?id=20095745
KLM and TU Delft join forces to make aviation more sustainable
https://www.tudelft.nl/en/2019/tu-delft/klm-and-tu-delft-join-forces-to-make-aviation-more-sustainable/