It is the Ko ku Ken kyujo Chokyori- ki (Koku meaning aviation, Kenkyujyo research institute, Chokyori long range, and ki abbreviation for hikoki aircraft), but it can also be called more simply Gasuden Koken or Koken-ki...
More explanation and photos here :
https://144airbattle.blogspot.com/2025/ ... art-1.html
https://144airbattle.blogspot.com/2025/ ... art-2.html
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