An interesting project, rather an imaginary exercise of a turboprop engine of average size, but an exercise of little importance in the end.

-The engine was designed by Nino Caldarola, and it turns out to be a very nice engine with a very interesting structure and architecture.

-The author believes that the use of separate afterburner chambers from the very early days brings back both the esthetics and the efficiency of combustion.

-It is a pusher type engine with double contra-rotating propellers.

“The Stratasys engine with three collaborators”

-The exhaust outlets are angled, one protruding above and the other below.

-The absence of an anti-ice system on the propeller blades can be observed.

-In this pusher arrangement the exhaust heat goes directly over the propeller blades, preventing the formation of ice, so a special anti-ice system is not necessary.

-See for example the Italian Avanti aircraft.

“New side view of the engine”

“A more detailed view of the engine”

-It has reverse flow, depending on how you look at it, since the engine is inverted as a pusher.

-However, for the purposes of insertion into the aircraft, normal flow is considered.

-Anyway, the anachronistic combustion chambers, heavier than the modern annular ones, indicate a centrifugal compressor, which seems to have only one active side.