Janes did a patent on it a while ago. 0.1 frontal RCS. For comparsion, the F-22 is at 0.0001 and 0.001ish for the F-35 (remember, this is frontal only, as the target is coming towards you). F-35 rumors lately have said they might have matched the F-22 RCS through newer means. An F-35 pilot talked about it being as…