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|family = Delta |status = Retired |sites = LA-N, Tanegashima |launches = 7 |success = 6 |partial = 1 |first = 9 September 1975 |last = 3 September 1982 |stagedata = }} The N-I or N-1 was a derivative of the American Delta rocket, produced under licence in Japan. It used a Thor-ELT first stage, a Mitsubishi Heavy Industries-designed LE-3 engine was used as a second stage,〔(【引用サイトリンク】title=N-Iロケット開発の歩み )〕〔(【引用サイトリンク】title=三菱重工 名古屋誘導推進システム製作所 事業所紹介 沿革 )〕〔(【引用サイトリンク】title=第1部 創造性豊かな科学技術を求めて 第2章 自主技術開発への展開 第3節 先導的・基盤的科学技術分野における自主技術開発の展開 2.宇宙開発 )〕 and three Castor SRMs.〔(【引用サイトリンク】title=JAXA Digital Archives )〕 Seven were launched between 1975 and 1982, before it was replaced by the N-II. Six of the seven launches were successful, however on the fifth flight, there was recontact between the satellite and the third stage, which caused the satellite to fail. On 29 February 1976, the second N-I conducted the only orbital launch to occur on a leap day (as of year 2008). ==Launch history== 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「N-I (rocket)」の詳細全文を読む スポンサード リンク
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