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Comment on Stages to Saturn: A Technological History of the Apollo/Saturn Launch Vehicles

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This is a pretty good book. It does fail to compare and contrast the different stages of the Saturn launch vehicle.

For example, the S-II, the 2nd stage, and the S-IVB, the 3rd stage, use a "common" dome between fuel and oxidizer tanks. The S-I, first stage, did not. Why? The S-II apparently used elliptical domes on both fuel and oxidizer tanks, but it appears that the S-IV and S-I used hemispherical domes. There's advantages and disadvantages to both, but why not set a standard? Titans all used "square-root of 2" elliptical domes, and I believe that the Centaur upper stage did as well.

Anyway, a compare-and-contrast on technical issues would have gone a long way with me.

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