The Duke Engine is an advanced internal combustion engine delivering high thermodynamic efficiency, complete fuel flexibility, (runs on any suitable spark ignition fuel), negligible 1st and 2nd order vibration with huge weight and size savings, which is ideal in general aviation or experimental aircraft.
This engine is the world's only viable axial, 4 stroke, spark ignited piston engine. It is lightweight, small, valveless, vibration-free, has very high power density, and runs on most fuels, including kerosene/jet fuel. The Duke engine is a great fit for aerospace applications, including ultralight, experimental and UAV platforms.
The presentation below shows the technology potential of the Duke engine for aviation from 100 hp up to 1050 hp.