Everyone’s talking about how the F-35 Lightning II has a RCS the size of a Golfball but I don’t know what it means or how significant it is.
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Radar reflects of radar-reflecting surfaces, like metal. By making a fighter jet out of composite materials that are invisible to radar, angling surfaces at certain angles, so that radar bounces off in a different direction, and using radar absorbing coating, we make the plane reflect much less radar than it would otherwise if it was made out of metal with rounded surfaces.
So those combined measures together, make it so that when radar hits the plane, it either passes through, bounces at different angle than back to radar station, or absorbed. The ammount of radar reflected back into radar dish is equivalent to what it would see if it scanned a golf ball.
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