The cryogenic equipment creates an enormously powerful electromagnetic field around the aircraft. Einstein never completely finished his Field Theory, but it was studied by numerical techniques using the Star 100 and Cray computers and others and integration became a simple game. Think of the magnificent possibilities. At absolute zero, atoms stop moving. When atoms speed up in relation to surroundings, time speeds up.
Frequency is everything.
When you understand the rules, wondrous things are possible. For hints of the possibilities, study the Philadelphia Experiment and Project Montauk. They have revealed the part of the secret telling that the shape of the surfaces affects the radar signature, to explain the strikes in Iraq and so on, but they don't want you to know the rest of the secrets. By revealing this much, they kept the Stealth program from being scuttled by Congress. Under this program they can send 22 planes into battle, and 22 planes return.