hornetfinn wrote:There are so many things that go under the term "stealth" that it's not possible to categorially say which one is stealthier.
Do we mean radar stealth? Like linkomart said, what frequencies are we talking about? It might be that F-22 is stealthier in low frequencies and F-35 in higher frequencies or then it might not be so. What azimuth and elevation are we talking about and are we talking only about monostatic radars or bi/multistatic ones?
RF stealth also encompasses suppressing active RF signals. What LPI features their radars have and how exactly they are implemented? How does MADL compare to IFDL when it comes to detectability? If either one is transmitting with Link 16, then both of their RF stealth is significantly compromised. Of course Link 16 transmissions would be avoided in situations where that might be a problem.
How about IR stealth? F-35 has one high-bypass turbofan which is better for IR emissions than two low-bypass turbofans in F-22, although F-22 likely compensates pretty well with their exhaust nozzles, larger size and less need for afterburner. How do their cooling systems and coatings compare?
In visual signature F-35 wins due to being significantly smaller, although the importance of that is quite low these days.
Official statements seem to indicate that F-35 is slightly stealthier than F-22 overall, although the difference is pretty meaningless in real world. Especially since they would be employed differently with F-22 taking advantage of their higher raw performance.
Actually, hard to see any real advantage for the F-22 over the F-35 in real world conditions. Even within the Air Superiority Role.While, the Raptor is much more expensive to both operate and maintain.
Further, the F-35 is much more versatile. Which, makes the case for maintaining the small pool of Raptors more and more questionable by the year....
Which, is why I personally don't see the F-22 being around much past 2030. If, it lasts that long....(Think F-14/Super Hornet)
"IMHO"