Apollo Discussions > The Hoax Theory

Saturn V Third Stage - Not enough room

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benparry:
Morning / Afternoon All.

Another Facebook group argument / debate. Below is a comment from somebody. Is there a website which literally adds up the bits within the Third stage that shows it does all fit





Phase 3 of the Saturn 5 rocket is 61.6 feet tall and 21.7 feet in diameter. If it was a cylinder (which it's not the top has a lander attached to it and it's much smaller and the diameter slowly decreases at the top)
I used a cylinder calculator and came up with 22,781 cubic feet.
Now we look at the list. There were 2 fuel tanks the larger held almost 80,000 gallons the other just over 6,000. The fuel alone takes up 11,417.52 Cubic feet of space. That's not counting the tanks to hold the fuel or the lines and pumps to move it.
Remember it's already more than ½ full even if you just literally poured the fuel in the rocket.

And that's if the entire rocket was shaped like a cylinder, again it's not

We still need room for Insulation so now your available space is even smaller.

Next subtract the cubic feet needed for the rocket's engines.

Don't forget the Lander itself.
We still need an oxygen supply, batteries, computers, and room for 3 Astronauts. It literally doesn't all fit.




cheers guys

Ben

Peter B:

--- Quote ---I used a cylinder calculator and came up with 22,781 cubic feet.
--- End quote ---

Correct.


--- Quote ---Now we look at the list. There were 2 fuel tanks the larger held almost 80,000 gallons the other just over 6,000. The fuel alone takes up 11,417.52 Cubic feet of space.
--- End quote ---

His figures are fairly off, but his volume is similar to what I calculated.


--- Quote ---That's not counting the tanks to hold the fuel or the lines and pumps to move it.
--- End quote ---

Er, what? Once you put the fuel in, there's no room left for the fuel?


--- Quote ---Remember it's already more than ½ full even if you just literally poured the fuel in the rocket.
--- End quote ---

Um, yes, that's how it works. A bit over half the volume of the stage is taken up by fuel. That leaves a bit less than half the volume for lines and pumps and engines and stuff.

Allan F:
Are your numbers for the third stage or for the third stage AND the SLA?

Allan F:
https://en.wikipedia.org/wiki/Apollo_(spacecraft)#Spacecraft%E2%80%93lunar_module_adapter_(SLA)

The confusion stems from your inclusion of the SLA into the 3rd stage. It was a separate entity.

Allan F:
Also, he thinks the CSM is also inside the 3rd stage.

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