The Forgotten Mach 2 Fighter: Why the YF-107 Ultra Sabre Was Cancelled in 1957
The North American YF-107 was a prototype fighter-bomber developed in the 1950s for the U.S. Air Force. Designed to carry nuclear weapons at supersonic speeds, it competed directly against the Republic F-105 Thunderchief. The aircraft was distinguished by its unique dorsal-mounted variable air intake and was capable of speeds exceeding Mach 2. Despite showing impressive performance and innovative design features, the USAF ultimately selected the F-105 for its tactical fighter-bomber role. Consequently, the promising YF-107 program was cancelled in 1957 after only three prototypes were built.
Official Source: https://migflug.com/jetflights/north-american-yf-107-ultra-sabre-cancelled-1957/
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