> can actually drop fuel consumption by 70%, every passenger and cargo jet in the country will look like that in no time. That is true if it had an actual redu

> can actually drop fuel consumption by 70%, every passenger and cargo jet in the country will look like that in no time. That is true if it had an actual reduction in total fuel spend over the journey. This promises a ~70% reduction in rate, which is not the same thing as 70% reduction over distance, unless someone says at the same speed. For instance, the double-bubble Aurora D8 did get 70% more efficiency out of the aerodynamics but also by cutting the cruise speed from 0.8 mach to 0.72 to make the aero work. So more efficient per hour, but longer hours of flight which introduces additional spend. The SUGAR FREEZE did something similar with extra wings under the main wings like a bi-plane, but again with big savings at mach 0.7 and only 10% at mach 0.8. But of course, the real cost shift there was switching the fuel type to something that can be manufactured out of co2+h20 (like pure methane).