intercontinental ballistic missile

...On the other hand, the possibility of developing a large long-range missile based on the V2 that could deliver an atomic bomb was not realized because it would require a large investment in new technology and industry while the guidance accuracy was not improved. For this reason, the missile development plan was discontinued in 1947, and the Army continued to research small rockets. However, in 1952, the hydrogen bomb was developed, the surface-to-air missile Nike was tested and proved effective against strategic bombers, and in light of information that the Soviet Union was working on a large-scale development of an intercontinental ballistic missile (abbreviated ICBM), the focus on ICBM development was considered, and as a result, the design and production of the Atlas began in 1954. After the Soviet Union successfully tested an atomic bomb in 1949, they steadily researched and developed missiles based on the V2 as a means of delivery, and announced the completion of an ICBM in August 1957.

*Some of the terminology used to refer to "intercontinental ballistic missile" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…一方，V2を基礎とする，原爆を運べる大型長距離ミサイルの開発の可能性は，新しい技術や工業に多額の投資を要するわりに誘導精度が上がらず，このため1947年ミサイル開発計画を中止し，陸軍で小型ロケットの研究を続けるにとどまった。しかし，52年水爆が開発され，地対空ミサイル〈ナイキ〉がテストで戦略爆撃機に対する有効性を実証し，またソ連が大陸間弾道ミサイルintercontinental ballistic missile(略号ICBM)開発に大規模に取り組んでいるらしいとの情報等にかんがみ，ICBMの重点開発が検討され，その結果54年から〈アトラス〉の設計･製造を開始した。　ソ連は1949年原爆の実験に成功すると，その運搬手段としてV2を基礎にミサイルの研究･開発を着々と進め，57年8月ICBM完成を発表した。…

※「intercontinental ballistic missile」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報