About This File
The first type of J-7 is not manufactured by Chengdu Aircraft Manufacturing Factory, but by Shenyang Aircraft Manufacturing Factory.Approximately only 23-24 J-7 prototypes have been produced, and 12 have been donated to Albania
There is basically no difference between the J-7 prototype and the MIG21F-13 model, except that the original engine has been replaced by the WP-7 engine made in China. T's WP-7 engine is modeled after the Soviet Union's r11-300 engine (but historically, the quality and efficiency of the WP-7 have been a concern, with the first WP-7 engine having a lifespan of only 100 hours)
References:
https://www.bilibili.com/read/cv9813494/
https://www.doc88.com/p-377487159434.html?s=rel&id=3
Chinese Aircraft - China's Aviation Industry since 1951 by Yefim Gordon and Dmitriy Komissarov
