Laws of Physics and Mathematics Dictate the Optimum Shape of a Stealth Aircraft

Refer to my post PAK FA T-50 : A Preliminary Analysis regarding to the similarities between F22 and PAK FA design, here is the illustration concerning the optimum shape of a stealth aircraft. To obtain a low observation characteristic, a stealth aircraft must have as much as possible paralleled edge of the airframe to reflect the radar wave away from its source. The coloured line shows the paralleled edge of the airframe on the PAK FA T-50 and F22 Raptor.