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              | Developed from the XF-88
                penetration fighter, the F-101 originally was designed as a
                long-range bomber escort for the Strategic Air Command. 
                But when the high-speed, high altitude B-52 jet bomber entered
                service, escort fighters were not needed.  The F-101's design was
                changed to fill both tactical and air defense roles. The F-101 made its first flight on Sep. 29, 1954. The first
                production F-101A
                became operational in May 1957, followed by the F-101C in Sep.
                1957 and the F-101B in Jan. 1959. By the time F-101 production
                ended in March 1961, McDonnell had built 785 Voodoos including
                480 F-101Bs, the two-seat, all-weather interceptor used by the
                Air Defense Command.
 In the reconnaissance versions, the Voodoo
                was the world's first supersonic photo-recon aircraft. The
                RF-101 was the world's first
                supersonic photo-recon aircraft.  The program began in 1956
                when 35 RF-101As
                and 166 RF-101Cs were produced.  Many earlier single-seat Voodoos
                were later converted to the reconnaissance configuration. 
                The RF-101 was used widely for low-altitude photo coverage of
                missile sites during the 1962 Cuban Missile Crisis and during
                the late 1960s in Southeast Asia.
 The
                F-101A and F-101C are single place supersonic fighters built by
                McDonnell Aircraft. The RF-101G and RF-101H are single place,
                supersonic, long range photo-reconnaissance airplanes modified
                from F-101A and F-101C airplanes by Lockheed Aircraft Service
                Company. Their appearance is characterized by thin, short, swept
                wings with triangular intake ducts in the wing roots, and swept
                back empennage. The horizontal stabilizer is a one-piece unit
                mounted high on the vertical stabilizer. The ailerons, mounted
                on the outer trailing edge of the wings, and the empennage
                control surfaces, operate through irreversible hydraulic systems
                which produce required control surface deflections. Aerodynamic
                feel is simulated by an artificial feel system.  When production ended in March 1961, nearly 800 Voodoos had
                been built.
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