Re: Towards a two-stroke turbodiesel aero engine It was Wnkl rotary engine Mitsubishi was trying to do, unsuccessfully, maybe to do with the reasons you mention.
Jet turbines are beautiful but very costly. There are small aircraft effectively written off cos a sea-gull writes off a jet engine, and replacement cost exceeds value of having the plane earn a living.
(Things here are at a standstill again. It's like treading water).
Malc
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