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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク W9 (nuclear warhead) ： ウィキペディア英語版 W9 (nuclear warhead) The W9 was an American nuclear artillery shell fired from a special 11 inch howitzer. It was produced starting in 1952 and all were retired by 1957. ==Description== The W9 was 11 inches (280 mm) in diameter, 55 inches (138 cm) long, and weighed 850 pounds (364 kg). It had an explosive yield of 15 kilotons. The W9 was a gun-type nuclear weapon, using around 50 kilograms of highly enriched uranium in one large rings assembly and one smaller "bullet", which was fired down a tube by conventional explosives into the rings assembly to achieve critical mass and detonate the weapon. The W9 units which were retired in 1957 were recycled into lower yield T-4 Atomic Demolition Munitions. These were the first (semi) man-portable nuclear weapons. 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「W9 (nuclear warhead)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.