| I think both of you are right but partially only.As far as WW2 period is concerned it is true.The Russians designers didn't have any access to the new west technology mostly.So they were forced to copy many parts of a/cs or simply whole planes etc.For instance Tu-4 (B-29).But contemporary aircrafts are designed for multitasking. Using computer applications for designing it has become obvious that the planes had to be similar each other. Simply ,the same ways of obtaining of solutions.If you look at new cars you also can notice the same situation.The differences are "hidden" inside. But outside....Aerodynamics is only one.
__________________ |