Interesting "entry" into the GA market.
Small Aircraft Jet Fueled Engine - DeltaHawk Engines
Powerful Technology Through Time-Proven Innovation. The first clean sheet piston engine design FAA certified in over 60 years.www.deltahawk.com
I think they've been at it for a couple decades at this point. They might have seen some sales for drones and such already though.
But yes, if I were to design a new engine for the GA market, it would look something like that. Diesel, so it can run on Jet A available at every larger airport on the planet. And a piston ported two stroke to give better power/weight, and also gets rid of the weight and complexity of the valvetrain.
