Explore the complete history and engineering behind the missing Century Series fighters, focusing on the breathtaking designs of the Republic XF-103 and the North American XF-108 Rapier. During the dawn of the atomic age, the threat of Soviet intercontinental bombers forced the United States Air Force to demand interceptors of unimaginable speed and power. Discover how brilliant aerospace engineers like Alexander Kartveli pushed the absolute limits of 1950s technology, drafting Mach 3 interceptors that required exotic titanium alloys, stainless steel honeycomb structures, and revolutionary propulsion systems. We delve into the fascinating mechanics of the XF-103’s dual-cycle engine, seamlessly blending a standard turbojet with a massive ramjet to achieve supersonic dominance at seventy-five thousand feet. This comprehensive documentary uncovers the intense Cold War arms race that birthed

Source: Ramjets and Rockets: The Forgotten Secret Century Series Aircraft of the Cold War