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The Musudan (chosongul 무수단 hancha 舞水端 ) missile 무수단 미사일 , officially Rodong-B chosongul 노동B , Hwasong-10 화성10호 , also known under the names BM-25, Taepodong X, Nodong / Rodong-B and Mirim, is a mobile intermediate-range ballistic missile developed by North Korea. The Musudan was first revealed to the international community in a military parade on 10 October 2010 celebrating the Korean Worker's Party's 65th anniversary, although experts believe these were mock-ups of the missile.〔 The Musudan resembles the shape of the Soviet Union's R-27 Zyb submarine-launched missile, but is slightly longer.〔 As of 2015, there was no indication that the missile system had been launch tested, or was operational. ==Development== In the mid-1990s, after the collapse of the Soviet Union, North Korea invited the Makeyev Design Bureau's ballistic missile designers and engineers to develop this missile, based on the R-27 Zyb. It was decided that, as the Korean People's Army's MAZ-547A/MAZ-7916 Transporter erector launcher could carry 20 tonnes, and the R-27 Zyb was only 14.2 tonnes, the R-27 Zyb's fuel/oxidizer tank could be extended by approximately 2 metres.〔 Additionally, the warhead was reduced from a three-warhead MIRV to a single warhead. The actual rocket design is a liquid fuel rocket, generally believed to use a hypergolic combination of unsymmetrical dimethylhydrazine (UDMH) as fuel, and nitrogen tetroxide (NTO) as oxidizer.〔 Once the fuel/oxidizer combination are fed into the missile, it could maintain a 'ready to launch' condition for several days, or even weeks, like the R-27 SLBM, in moderate ambient temperatures. A fueled Musudan would not have the structural strength to be land transported, so would have to be fueled at the launch site.〔 It was originally believed that Musudan's rocket motors made up the second stage of the Taepodong-2, which North Korea unsuccessfully test fired in 2006.〔(2nd 3rd Right Side )〕 However analysis of the Unha-3 launch, believed to be based on the Taepodong-2, showed that the second stage did not use the same fuel as the R-27, and is probably based on Nodong rocket technology.〔 There is a possibility that the Musudan likewise is using the Nodong's kerosene and corrosion inhibited red fuming nitric acid (IRFNA) propellants, reducing the missile's range by about half.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「BM25 Musudan」の詳細全文を読む スポンサード リンク
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