Timeline for When a Saturn V reaches max Q, what fraction of the lengthwise structural load is due to drag rather than acceleration?
Current License: CC BY-SA 4.0
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| Sep 26, 2018 at 13:38 | comment | added | Uwe | The diameter of the third stage is 21.7 feet, the diameter of the first and second stage is 33 feet. Area is 2.3 times bigger, so drag to the third stage and payload may be smaller than the drag to the first and second stage together. Length of first and second stage is 60 % of the total length of a Saturn V with payload. So drag to first and second stage may be bigger than 50 % of total drag. Not to forget the drag of the engine nozzles of the first stage protuding the tanks diameter. | |
| Sep 26, 2018 at 13:06 | history | edited | GremlinWranger | CC BY-SA 4.0 |
Wrong three maybe four different ways.
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| Sep 26, 2018 at 11:18 | comment | added | Russell Borogove | Thrust of the Saturn V first stage is about 8 million pounds, not forty thousand. It is most decidedly still accelerating at max Q; it’s just balanced by air density falling off very rapidly with altitude. | |
| Sep 26, 2018 at 11:14 | history | answered | GremlinWranger | CC BY-SA 4.0 |