The Northrop Grumman B-2 Spirit is the world's first 5th-generation bomber, and its design still sets the standard for stealth. Built as the first true stealth bomber with global reach and a world-class payload, the aircraft also became the first flying wing to enter serial production and operational service.
Its shape is the point. The tailless design removes vertical surfaces and sharp right angles that would send radar energy straight back to the source, while smooth, curved surfaces scatter radar waves away from the receiver. Every leading and trailing edge is aligned at the same angles, and the panel doors and hatches follow those same lines, reducing the clues a radar set can catch.
That geometry works with the material skin. The B-2 Spirit uses a radar-absorbent coating identified in the article as Carbonyl Iron Powder, layered with varying electrical properties so incoming radar energy is converted into heat instead of being reflected. A specialized material called Butter seals the gaps between panels, closing off seams that could otherwise betray the aircraft.
Inside, the bomber carries its weapons in an internal bay with a special rotary launcher that spins the selected munition into position. The doors open only long enough to fire, keeping ordnance concealed for as much of the mission as possible. Those features matter because the B-2 Spirit's RAM and radar-defeating geometry are its most important defenses against military fire control radar, effectively blunting the ability of weapons-quality targeting radar to lock on and guide a surface-to-air missile accurately against it.
The numbers show how far that idea has gone. The article says the B-2 Spirit has the smallest radar cross-section of any stealth aircraft in the world at 0.0001 square meters. In civilian airspace with the transponder turned off in combat configuration, it can appear no larger than a bird crossing the sky.
That is why the aircraft is still framed as a culmination of Jack Northrop's dream and one of the most effective platforms in the history of the US Air Force. The B-2 Spirit did not just make stealth practical; it turned a flying wing into an operational strategic bomber, and the design remains the benchmark against which later stealth aircraft are measured.