Here are some of my own measurements. J-20 has the longest looking external weapons bay because seriously, it has comically long cavity ramps.Is the generally agreed upon size of the weapons bay the same size or slightly larger than the J-20’s? My analysis is definitely inaccurate because I don’t have any perfectly head on images. But I took 22m from this analysis I’m quoting below and did some pixel measurements and got 4.856m for the door. I did the same for the J-20 but had to assume where the door would end, and with the PL-15 length of 4 meters got 4.913m. Obviously not exact as I said before but it seems to me like the J-20 and J-50 weapons bay doors are basically the same size. The J-20’s bay looks a little smaller than the door would suggest but I’m not sure if that would apply to the J-50 as well. I would expect the J-50 weapons bay to larger than the J-20 though. If it is coming out in the 2030s I think it would be reasonable to expect it be able to accommodate the PL-16 successor instead of being stuck with the PL-16 forever.



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