An attempt at modelling the Su-57 and simulating its radar signature

https://basicsaboutaerodynamicsandavionics.wordpress.com/2022/09/26/su-57-radar-scattering-simulation/

It's 11x worse than an F-35A in X-band and 3.7x worse in L-band, mainly due to its intake ducts. Worse, it returns radar reflections directly ahead of itself.