The
            MiG-17 is a refined version of the  Mig-15
            with a redesigned wing with 45 degree sweep and a lengthened
            fuselage to reduce drag.  The prototype first flew in 1950 with
            production deliveries beginning in 1952.  NATO gave the MiG-17
            the code name Fresco.
            An afterburning engine was added for the MiG-17F
            and all-weather capability to the MiG-17PF.  The MiG-17PFU
            was the first Soviet missile armed interceptor.
            Chengdu in China built a license version, the J-5
            and a two-seat trainer, the JJ-5.
            
Although considered obsolete by the mid-1960s, the
            MiG-17 saw extensive use by North Vietnam against the U.S. Air
            Force.