...What we're looking at is a six-person private craft that promises to fly at jet speeds, but with eight times lower fuel consumption, and a range that's twice that of a comparably sized craft.
Bold claims indeed. Otto Aviation says on its website that 31 successful test flights have so far been performed, with aerodynamic efficiency proven in 2019, bolstering its declaration that "the Celera 500L is the most fuel-efficient, commercially viable aircraft in existence."
... Laminar flow is the minimum drag solution for aircraft surfaces, explains its website, and features smooth layers of airflow with little to no mixing of adjacent layers.
The Celera 500L's fuselage takes advantage of an optimum length-to-width ratio to maximize laminar flow. Laminar shapes are also used for the wings and tail sections.
https://edition.cnn.com/travel/artic...ane/index.html