F-7

The Chengdu J-7 is a Chinese fighter aircraft. It is a license-built derivative of the Soviet Mikoyan-Gurevich MiG-21, and thus shares many similarities with that aircraft. The J-7 is armed with infrared homing air-to-air missiles and is mainly designed for short range air-to-air combat. The aircraft is also used for close air support. On 30 March 1962, the Soviet Union and China signed a technology transference arrangement on the MiG-21. Allegedly, while various kits, components, completed aircraft and associated documents were delivered to the Shenyang Aircraft Factory, the design documentation was incomplete, and Chinese designers made efforts to reverse engineer the aircraft. While the two aircraft are greatly similar, areas of difference include the hydraulic systems and internal fuel arrangements.