Silkworm (missile) - YJ-4

YJ-4

YJ-4 is a family of experimental land-attack cruise missiles developed by China in the 1970s and early 1980s. Due to the limitation of Chinese industrial and technological bottleneck at the time, the YJ-4 only entered the Chinese services in extremely limited numbers, mainly serving as a foundation for more successful Chinese cruise missiles developed later, such as Changfeng missile. Two versions of YJ-4 family were developed: YJ-4I, which is also frequently but erroneously referred as YJ-41, and YJ-4II, which is also frequently but erroneously referred as YJ-42. The two missiles only differed in their respective powerplant, YJ-4I was equipped with WP-11, the Chinese version of Turbomeca Marboré, while the longer ranged YJ-4II was equipped with an engine that was twice as powerful, FW-41, the Chinese version of Teledyne CAE J69, reversed engineered from downed American Ryan Firebee.