DF-104 - Dong Feng / East Wind fighter
The first indigenous Dong Feng [East Wind] series fighter was the DF-104. The DF-104 seems to have been developed between the DF-103 MiG-19PF derivative and DF-105 MiG-19 derivates. Little is known of this project, which remained a "paper plane". It was designed by the Shenyang Aircraft Factory (not the Shenyang-based 601 Aircraft Design Institute) with Soviet help, though it was not as a copy of a Soviet design. The DF-104 was designed to be capable of Mach 1.4, using design elements of the latest fighters, and it is assumed that it was to be powered by two up-rated WP-6 turbojet engines, which was used on the J-6 and Q-5.
Development of the DF-104 started towards the end of 1957 or early 1958. This design was suggested when the Aviation Industry Control Section insisted early in 1958 on much higher performance especially for a top speed of Mach 1.8 at a service ceiling of 20.000 m. The design of the DF-104 started in 1958, and between May and June 1958, the design team started to inquire into improving the East Wind 104 design speeds. Some form of prototype construction had begun in May 1959, but only one month later the concept needed some significant modifications, and it was soon abandoned in favor of an enlarged version of the DF-104 called the DF-107.
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