Operational History
The prototypes, serial numbers 48-317 and -318, began flight tests in 1950 and were entered in a flyoff against the other penetration fighter projects, the XF-88 and XF-90; the XF-88 Voodoo was declared the winner. None of the projects would be ordered. The YF-93As were turned over to the National Advisory Committee for Aeronautics (NACA) AMES facility for further testing before being utilized as chase aircraft until 1956. Flight with the NACA ducts proved troublesome at high angles of attack, restricting air flow to the engines. By this time, however, higher performance aircraft were available and both aircraft were eventually declared surplus and scrapped.
Read more about this topic: North American YF-93
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