The record of planes being designed with full stealth capabilities began with the F-117 Nighthawk and continued with the B-2 Spirit, F-22 Raptor, and F-35 Joint Strike Fighter. A typical attribute of all of those planes is the shortage of a vertical stabilizer and rudder.
The design of stealth plane fastidiously omits any surfaces vulnerable to radar detection, together with engine inlets or surfaces of adjoining components with proper angles. For this reason twin stabilizers are set at aggressive angles and engine inlets are by no means uniform rectangular or round holes. Each crease on an airframe is fastidiously calculated to scatter radar alerts. The result’s that the RCS of the F-35, for instance, makes it seem no bigger than 0.005 m² — only a bit bigger than a hummingbird.
American plane will not be the one stealth fighters within the sky, though they dominate the sphere. Soviet know-how has lagged far behind the West, leaving Russia with no stealth plane till 2019. Even then, its Su-57 pales compared to Western know-how as its RCS is about 1,000 instances bigger than the F-35 at someplace between 0.1 to 1.0 m².
Moreover, Russia has lower than 20 hand-built stealth fighters in its fleet, whereas the U.S. has already produced lots of of F-35 plane. A deliberate Su-75 Checkmate has but to make it into manufacturing. In any other case, China has produced its Chengdu J-20 stealth fighter in average numbers.