3 ms·
Still, a plane with half the aerodynamic drag and twice the BSFC is only getting 4x the fuel efficiency, not the ~10x they're claiming. Even if they're making a
by scarier 6y ago
Still, a plane with half the aerodynamic drag and twice the BSFC is only getting 4x the fuel efficiency, not the ~10x they're claiming. Even if they're making a bit of "free" thrust from their cooling system (which has been a thing since WWII), I don't see what accounts for the rest, even ignoring that the Celera likely has a significant increase in frontal area due to the standing-height cabin.
- brunooo 6y agoRe “free thrust/WWII”: Real Engineering recently did a great summary of the P47 Thunderbolt intercooler and general craziness of the engine at https://youtu.be/IwqTN5fhMR8 https://youtu.be/IwqTN5fhMR8
- nl 6y agoThey are claiming slightly under 10x fuel efficiency compared to a jet (2-3 mpg vs 18-25 mpg). That doesn't seem completely unreasonable. A Pilatus PC-12 (which is the turoprop competition here) NXG gets around 4.3 mpg.