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[Vasya]

Maybe here there is a language problem the pic and text are clear that this engin used a centrifugal two stage supercharger not a supercharger driven by exhaust gases  that i never mentioned so i don't understand what i should say more
I don't fully understand what the problem is

In post number 2, the characteristics indicate a turbocharger.
Therefore, I asked a question regarding the 5 Siden model, what type of compressor can be installed on the Siden model, the 3D of which was depicted in the game.
I was asked to write a fm for this model.
FM is currently being tested in missions.
If a turbocharger is not needed, then a motor with a mechanical supercharger will be registered in the fm.
Also sorry for my misunderstanding of your answer!

[Frankiek]

Can confirm that is a mechanical double speed supercharger i will see if i can find more info about it both the plane and the engines where just new developments so i couldn't find detailed info. The only prototype that was build was destroyed in june 1945 when the USAF bombed the factory

[Vasya]

Can confirm that is a mechanical double speed supercharger i will see if i can find more info about it both the plane and the engines where just new developments so i couldn't find detailed info. The only prototype that was build was destroyed in june 1945 when the USAF bombed the factory

There are such motors:
https://www.valka.cz/MK9A-Ha-43-11-t40371
https://www.valka.cz/MK9E-Ha-43-51-t179186

[Frankiek]

It is the Ha-43-11 but this site has the same basic information available in wikipedia

[Orge Schwab]

Francillon states in his book that: "Kawanishi designed two specialised versions -  the N1K5-J Shiden Kai 5 Model 25, armed with two fuselage-mounted 13.2 mm Type 3 machine guns and four wing-mounted 20mm Type 99 cannon. It was powered by a 2,200 h.p. Mitsubishi MK9A eighteen cylinder air-cooled radial, while another high-altitude interceptor version was planned around the Homare 44 with mechanically-driven, three-speed supercharger. A prototype of the N1K5-J was destroyed prior to completion during a Superfortress attack."

Further engine details are given as:

(N1K5-J): Mitsubishi (Ha 43) 11 (MK9A) rated at 2,200 hp for take off, 2,070 hp at 1000m and 1,800 hp at 6000m driving a four blade metal propellor

(Projected version of N1K5): Nakajima Homare 44 eighteen cylinder air cooled radial rated at 2,000 hp for take off, 1,880 hp at 2000m, 1,800 at 8000m driving a four blade metal propellor

It seems neither had a turbocharger fitted.