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Apollo 4

美国国家航空航天局 (NASA) · Saturn V · 39A 号发射工位 (LC-39A)

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阿波罗4号是一次“全箭”测试,意味着所有火箭级和航天器在首次飞行中均完全功能正常,这对NASA来说是首次。这是S-IC第一级和S-II第二级首次飞行。它还展示了S-IVB第三级的首次空中重启。任务使用了改进的Block I指令服务舱(CSM),以测试若干关键的Block II改进,包括在模拟月球返回速度和角度下测试其隔热罩。

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Apollo 4 - Wikipedia

Apollo 4 was an "all-up" test, meaning all rocket stages and spacecraft were fully functional on the initial flight, a first for NASA. It was the first time the S-IC first stage and S-II second stage flew. It also demonstrated the S-IVB third stage's first in-flight restart. The mission used a Block I Command Service Module (CSM) modified to test several key Block II revisions, including its heat shield at simulated lunar-return velocity and angle.

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