charlielima223 wrote:A trade off between defensive measures and stealth. I believe Russian and Sukhoi engineers/designers never put much stock in stealth. Instead of making the most stealthy aircraft they can (like F-22, F-35, and perhaps J-20) they went with, "stealthy enough". Honestly I would be impressed if the Su-57 comes close to F-117 levels or RCS.
Well IR AAMs are only really useful AAMs against VLO targets.
This is why future AAMs all have dual seekers, Peregrine missile have dual seeker, some sources mentioned PL-15 also have dual seeker.
So DIRCM will be lot more important for VLO fighters then for non VLO fighters.
Russians and Su-57? Well it isn't vanity project because in 2010s they got similar number of Su-35 as they plan to get Su-57 in 2020s.
Russia isn't Soviet Union so they can't get huge number of fighters as in cold war. Orders are lot smaller now. Even Su-35 which is best bang for buck (less then 30millions) isn't get in huge numbers.
Just look how many MiG-31, SU get in 1980s (over 500!) and that plane was in that period probable most expensive fighter in world if you look size (tons of titanium and very exotic aluminium alloys) fuel, and electronics under hood.