how does RCS work. I saw that the F22 has RCS similar to a bumblebee so how does that work. Does it mean that it is as hard as finding a bumblebee
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What this means is that the F-22 reflects about the same amount of signal back to radar antenna as you would expect from a perfectly reflective surface with an area the size of a bumble bee (assuming both are the same distance). This is not necessarily super tough to see, but the atmosphere is full of particles around this size, so it can be tough to discern. The main advantage of reduced effective range of radar. If the radar installations are spaced such that they overlap to detect normal aircraft, then a stealth aircraft can shrink their effective range such that they no longer overlap and leave gaps between radar installations.
A real bumblebee would actually have a RCS smaller than a bumblebee since it is not a particularly good reflector of radio waves.
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