Is this an ellipsoid?

  • #1

Main Question or Discussion Point

Hi, everybody.

Is this tank an ellipsoid? fueltank.jpg If not, what shape is it?
 

Answers and Replies

  • #2
The question is kinda of important and isn't a homework thing. I'm trying to determine the volume of the remaining fuel in a tank like this by the height of the fuel remaining. I need to find out for work.
 
  • #3
DaveC426913
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The image hasn't been approved yet. You can see it but no one else can.
 
  • #4
Silly me
 
  • #5
DaveC426913
Gold Member
18,561
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That is not an ellipsoid, that is a cylinder with semispherical ends.

It breaks down to the volume of a semi-filled cylinder of length L and radius R plus the volume of a semi-filled sphere of radius R.

Uh ... I went looking for the relevant formulae but ended up finding a calculator that does precisely what you want:

http://www.onlineconversion.com/object_volume_partial_out_cylinder.htm

Be careful with your numbers:
- you're asked for the radius which is only half the diameter of the tank
- you're asked for the length of only the straight part
 
Last edited:
  • #6
thanks...
 

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