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DF-21
The Dong-Feng 21 (DF-21; NATO reporting name CSS-5 - Dong-Feng () is a two-stage, solid-fuel rocket, single-warhead medium-range ballistic missile (MRBM) in the Dong Feng series developed by China Changfeng Mechanics and Electronics Technology Academy. Development started in the late 1960s and was completed around 1985-86, but it was not deployed until 1991. It was developed from the submarine-launched JL-1 missile, and is China's first solid-fuel land-based missile. The U.S. Department of Defense in 2008 estimated that China had 60-80 missiles and 60 launchers.
Originally developed as a strategic weapon, the DF-21's later variants were designed for both nuclear and conventional missions. As well as a nuclear warhead of around 300 kt, it is thought that high explosive and submunition warheads are available. The latest DF-21D was said to be the world's first anti-ship ballistic missile (ASBM). The DF-21 has also been developed into a space-capable anti-satellite weapon/anti-missile weapon carrier.
Though the launcher itself is road mobile, an actual launch requires support vehicles and a specially prepared launch platform to prevent backblast damage due to the hard launch.
== DF-21 (CSS-5 Mod-1) ==
The basic variant DF 21 has a range of 1,770+ km,〔 and a payload of 600 kg. The missile can carry a single 500 kt nuclear warhead, with an estimated CEP of 300~400 m. This version did not enter operational service.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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