Actually Russian and US stealth technologies advancing in different directions.
US engineers spending billions of $ to construct the plane from any-kind of plastic materials. Trying to find some optimal form of airplane body that might meet a stealth chalenges. Just take a look at F117- it is the flying table! All that advanced onboard computer system mainly is intended to allow that plane to fly more or less.
Russians in turn, are trying to construct some sort of plasma device that allow planes to stay unvisible to radar. That is the answer why even the last russian fighter jets are not so good according to american's understanding of "Stealth". Moreover if russians succedeed to built such device it allow them to make "stealth fighters" from whatever they like.
US engineers spending billions of $ to construct the plane from any-kind of plastic materials. Trying to find some optimal form of airplane body that might meet a stealth chalenges. Just take a look at F117- it is the flying table! All that advanced onboard computer system mainly is intended to allow that plane to fly more or less.
Russians in turn, are trying to construct some sort of plasma device that allow planes to stay unvisible to radar. That is the answer why even the last russian fighter jets are not so good according to american's understanding of "Stealth". Moreover if russians succedeed to built such device it allow them to make "stealth fighters" from whatever they like.
