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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.

[Vasya]

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.

Many thanks for the information!
The engine is already written, the boost pressure is approximately accurate.
In FM I correct small roughnesses.
The starting (empty, without weapons) weight will be about 2840 kg.
The Ha-43-11 engine weighed 960 kg, and the Homare-21 820 kg.
According to the report, the Georg-11 had an empty weight of 2700 kg, the equipped weight was 3500 kg.

[Frankiek]

you may also want to have a look at this thread in particular the second post
https://ww2aircraft.net/forum/threads/ha-43-mk9d-j7w1-engine-pls-end-my-suffering.53050/

[Vasya]

you may also want to have a look at this thread in particular the second post
https://ww2aircraft.net/forum/threads/ha-43-mk9d-j7w1-engine-pls-end-my-suffering.53050/

Many thanks!!! for the link to the documents on the engine.
Rewrote the engine according to the graphs:

Code: [Select]

[MK9A/Ha-43-11/Shiden-Kai-N1K5/NEW-0]   
  Type Radial
  Autonomous 1
  Cylinders 18
  Carburetor 2
  Direction Right
  Extinguishers 4
  EngineAcceleration 4.0
  HorsePowers 1900.0          // +300мм
  BoostFactor 1.0
  WEPBoostFactor 1.053        // +420мм - 2000HP
  cAfterburner 1 
  AfterburnerType 9
  cMix 0
  RPMMin 400
  RPMNom 2800.0
  RPMMax 2800.0
  RPMMaxAllowed 3100.0
  Reductor 0.85               // 0.52
  PropMass 205.0
  PropDiameter 3.1            // 3.3m
  PropAnglerType 1
  PropAnglerSpeed 0.09
  PropAnglerMinParam 1456.0
  PropAnglerMaxParam 2800.0
  PropAnglerAfterburnerParam 2810.0
  PropPhiMin 12.0 
  PropPhiMax 47.0 
  PropAoA0 11.0
  Voptimal 350.0
  cMix 1
  MixerType 1
  MixerAltitude 10000
  CompressorPAt0 0.35
  cCompressor 1
  CompressorType 1
  CompressorSteps 2
  CompressorRPMCurvature 5.0 
  CompressorPMax 1.615                 // +420мм
  CompressorAltitude0 1800.0
  CompressorMultiplier0 1.053          // 2070HP ~ 1000M  +420мм
  CompressorBaseMultiplier0 1.053      // 2000HP - 1800M  +300мм
  CompressorAltitude1 5600.0           // Curvature + 600m
  CompressorMultiplier1 0.965          // 1930HP - 5000M  +420мм   
  CompressorBaseMultiplier1 0.96316    // 1830HP - 5000M  +300мм
  CompressorRPMP0 2000.0
  CompressorRPMPMax 2810.0
  CompressorMaxATARPM 1.452            // +300мм
  CompressorSpeedManifold 0.65
  CompressorRPM0 400
  CompressorATA0 0.45
  CompressorRPM1 1200
  CompressorATA1 0.55
  CompressorRPM2 1800
  CompressorATA2 0.88
  CompressorRPM3 2000
  CompressorATA3 1.15
  CompressorRPM4 2200
  CompressorATA4 1.22
  CompressorRPM5 2400
  CompressorATA5 1.30
  CompressorRPM6 2600
  CompressorATA6 1.37
  CompressorRPM7 2800
  CompressorATA7 1.452  // +300мм
  DisP0x 2800
  DisP0y 0
  DisP1x 0
  DisP1y 50
  TESPEED 0.010
  TWATERMAXRPM 220  // температура головок цилиндра нормальная
  TOILINMAXRPM 65
  TOILOUTMAXRPM 90  // температура масла на входе в мотор
  MAXRPMTIME 600
  MINRPMTIME 999
  TWATERMAX 250     // температура головок цилиндра максимальная
  TWATERMIN 100
  TOILMAX 110       // температура масла на выходе из мотора
  TOILMIN 40
 
  SoundName Homare
  PropName middle
  StartStopName std_p
 
  FuelConsumptionP0 = 0.190F
  FuelConsumptionP05 = 0.230F
  FuelConsumptionP1 = 0.290F
  FuelConsumptionPMAX = 0.320F
Full boost 1.751 (+520mm) with methanol can be done only in late patches from DT.
In patches before 4.13 there may be problems with reading the EM (motor) code of the game.

[Frankiek]

But I think we have some kind of methanol boost even in older patches

[Vasya]

But I think we have some kind of methanol boost even in older patches

In old patches there is no possibility to regulate boost pressure in afterburner mode twice or by altitude.
In reality, aircraft engines can have 3-4 operating modes: takeoff, combat and nominal, as well as a mode at ground level.
On some American aircraft (Widlcat, Helcat, Corsair) the pilot has a handle for switching between different modes, in addition to the throttle handle and the propeller pitch control handle.
In patch 4.12 and below, the game code does not understand many features of real engines. For example, boost type 12 does not work correctly, but in patches 4.13 and above it works correctly.
Here are the finished fmd and emd files for stitching into buttons or a separate file with fm.
Ground speed at 100% thrust is 530 km/h - radiator is open.
Speed ​​at an altitude of 6500 meters is about 680 km/h - radiator 6.
Altitude gain in a combat turn at 100% thrust is 970-1000 meters.
Controls are adjusted for maximum ground speed.
Tested in a mission on the Smolensk map at a temperature of 17 degrees.
I have this mod connected to other models of the Siden Kai and does not work separately.
https://drive.google.com/file/d/1XNV1D7iSW8Da3a4x2EA4RGD28oq_wYH0/view?usp=sharing