Yes, the Germans and French have a jump on diesel aircraft engines. While Teilert of Germany uses 2.0 L Mecredes engines as the core of their engines SMA of France developed a diesel engine from scratch.
Both of 4-stroke engines that are heavier than the Deltahawk 2-stroke engine. But Jet fuel, like diesel fuel, has sufficient lubricity so as not to require adding oil to the fuel fix as used in gasoline powered 2-stroke engines.
The WWI era rotary engines,like used on the Fokker Triplane, used caster oil in the fuel mix so most of the pilots had chronic diarrhea! Poor Red Baron!!!
See, I know my aviation!
Yes, but some of the FW109's had V12 engines. The WWI engines were not radial engines but rotary engines in that the propellers were rigidly mounted to the engine and the whole engine spun. They were all 2-stroke engines and their throttles were always full open all of the time. They would regulate the power but cutting (grounding out) the magnetos. It can be easily seen and heard, on this video.<quoted text>
I'm sure you do. The Focke-Wulf and P-47 Thunderbolt had radial engines, and both were formidable aircraft.