Sad it was never finished but it’s enough to add under Gaijin’s rules. Though it would be a stand alone aircraft so you won’t get anything after it. It’s nice we won’t just have an import for the top tier of Japan
This could be at the end of the domestic fighter (F-1/F-2) line, with F-35 in the import fighter (F-4/F-15) line.
I could see GCAP eventually coming after it, but it will be years before that even exists, while 5th gen is probably less than a year away.
I dont think 5th gen is going to be what people think it will be cracked up to be. But Mitsubushi 26DMU will be effective enough.
Mmm, you know, im considering changing the name of the thread / suggestion. Cause while the model used as a reference for this is the 26DMU, thats not really the project name. And imo it being named after the actual project would put the suggestion in better faith for a lot of people, rather than naming it after a design configuration mockup of the project.
So, what do we think its name should be?
- Mitsubishi 26DMU
- i³ Prototype
- F-X Preliminary Prototype
- F-X 26DMU Study
Yes ik calling it i³ isnt technically correct, but they are very closely related in research and development, so…
Honestly I feel like there isn’t an ideal solution at all.
Just going for 26DMU is a bit weird because the entire DMU series was only design mockups for the F-X aircraft that’s suggested.
That is just about the equivalent of making a KF-21 suggestion named C-109. It’s technically the right design, but not really the name of the final aircraft.
KF-21 designs

But it also can’t be named (X)F-3 because that would overlap with the future GCAP, and just “F-X” is too vague because it’s used for other projects as well, again including GCAP.
I usually call it “5th gen F-X” to avoid the confusion with 6th gen F-X / GCAP, but that just doesn’t sound good for a name in game.
So I think something like “F-X (26DMU)” would be the best compromise. It’s the F-X fighter based on the 26DMU design.