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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 Caseless ammunition ： ウィキペディア英語版 Caseless ammunition Caseless ammunition is a type of small arms ammunition that eliminates the cartridge case that typically holds the primer, propellant, and projectile together as a unit. Caseless ammunition is an attempt to reduce the weight and cost of ammunition by dispensing with the case, which is typically precision made of brass or steel, as well as to simplify the operation of repeating firearms by eliminating the need to extract and eject the empty case after firing. Its acceptance has been hampered by problems with heat sensitivity, sealing, and fragility. Its use to date has been limited to prototypes and low-powered firearms. ==History== During World War II, Germany began an intensive program to research and develop a practical caseless ammunition for military use, which was driven by the rising scarcity of metals, especially copper used to make cartridge cases. The Germans had some success, but not sufficient to produce a caseless cartridge system during the war. Japan successfully developed the Ho-301 40mm autocannon during the war for mounting on aircraft. It saw active, though relatively limited, use in the defence of the Japanese home islands during the waning months of the war. 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「Caseless ammunition」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.