Nakajima Ha[45]-41 NK9A Engine

Discussion in 'Engines' started by krieghund, Dec 6, 2012.

  1. krieghund

    krieghund Member

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    I was doing some research into the Ki-44-III and ran across these specs for the Ha[45]41 NK9A of the Shoki 3 fighter. There seems to be only about a half dozen Ki-44-III made but with this engine's power output it must have been hot. This engine is also referred to as the Homare 10. I am wondering with these numbers why is the Homare 11 of the N1K1-J and Ki-84 is so much less in performance and why the Homare 10 was not used. Of course I suspect these numbers are not accurate. Does anyone have any information on this engine or can shed some light on this.
     

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  2. R Pope

    R Pope Member

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    My info on the Homare 21 has it a 1940 cu. in. 18 cylinder radial with 1970 take-off HP. tapering off to 1000 HP at 22,000 feet. Sorry, no gen on the Homare 10.
     
  3. krieghund

    krieghund Member

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  4. Shinpachi

    Shinpachi Well-Known Member

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    #4 Shinpachi, Dec 8, 2012
    Last edited: Dec 8, 2012
    Interesting thread, krieghund.
    Where did you know Homare 10 for Ha-145?
    As long as I know, the army Ha-145 was equivalent to the navy Homare 40s with 2-stage 3-speed supercharger.

    Ha-45-41 was an integrated designation for Homare 41.
     
  5. krieghund

    krieghund Member

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    A while back I got a spreadsheet from the Biglobe website of a guy who had all kinds of aerodynamic materials on it and one was engines of the Japanese navy army. His name was ăȘがもり

    His site has been down now for a few years. This is an excerpt of the Ha145 engine.
     

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  6. Shinpachi

    Shinpachi Well-Known Member

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    Thank you very much for your kind information, krieghund.
    Nagamori-san is unknown to me regretly.

    BTW, the official integrated designation for the Ha-145 was Ha-45-43.
    You may think it equivalent to Homare 43.
     
  7. krieghund

    krieghund Member

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    Ok thanks. Any luck moving forward with the A6M8?
     
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