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The Secret Skin: Why the F-22 Raptor's Stealth Coating Is Nearly Impossible to Replicate

The F-22 Raptor's formidable stealth capability is largely attributed to its highly classified and complex radar-absorbent material (RAM) coating. This isn't simple paint, but a multi-layered system designed to absorb and deflect radar signals, making the aircraft nearly invisible to detection. The application and maintenance process is incredibly demanding, requiring specialized climate-controlled hangars and robotic systems to apply the coating with precision. Due to the top-secret nature of its chemical composition and the intensive labor involved in its upkeep, the technology remains a significant barrier for any potential adversary to overcome. Even minor damage can compromise its stealth, necessitating constant and meticulous maintenance by highly trained crews.

Official Source: https://simpleflying.com/why-f-22-raptor-stealth-coating-nearly-impossible-replicate/