The Super Hornet achieved its reduced RCS through a combination of structural reshaping and radar-absorbent materials (RAM).
A small but telling detail is the gun port on the nose. When the M61 cannon is not in use, a specially designed door covers the muzzle. This is not just for aerodynamics; the holes required for the gun barrels act as "resonant cavities" that light up on radar like a beacon. The cover ensures the nose remains electromagnetically smooth. f18 rcs
The most obvious change is in the aircraft’s geometry. The design team applied the "rule of deflection"—angling surfaces to bounce radar waves away from the source. The Super Hornet achieved its reduced RCS through