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|status = Retired |sites = CCAFS LC-14 |success = 7 |fail = 2 |launches = 9 |first = 29 July 1960 |last = 15 May 1963 }} The Atlas LV-3B, Atlas D Mercury Launch Vehicle or Mercury-Atlas Launch Vehicle, was a man-rated expendable launch system used as part of the United States Project Mercury to send astronauts into low Earth orbit. It was derived from the SM-65D Atlas missile, and was a member of the Atlas family of rockets. The Atlas D missile was the natural choice for Project Mercury since it was the only launch vehicle in the US arsenal that could put the spacecraft into orbit. But its reliability was far from perfect and Atlas launches ending in explosions were an all-too common sight at Cape Canaveral. Thus, significant steps had to be taken to man-rate the missile and make it safe and reliable. ==Systems modified== 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「Atlas LV-3B」の詳細全文を読む スポンサード リンク
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