Difference between revisions of "AirFish"
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=== Lift of balloon === | === Lift of balloon === | ||
− | # The volume of a sphere is 4/3 * pi * | + | # The volume of a sphere is 4/3 * pi * r^3, where r is the radius of the balloon. |
# One cubic foot of helium will lift about 28.2 grams, so multiply the volume of the balloon by 28.2. | # One cubic foot of helium will lift about 28.2 grams, so multiply the volume of the balloon by 28.2. | ||
# Divide by 448 -- the number of grams in a pound -- to determine the number of pounds it can lift. | # Divide by 448 -- the number of grams in a pound -- to determine the number of pounds it can lift. | ||
+ | |||
+ | (4/3) * pi * (r^3) * 28.2 = lift in grams | ||
+ | ((4/3) * pi * (r^3) * 28.2) / 448 = lift in pounds |
Revision as of 07:41, 25 January 2008
Basecamp
The project management is through AirFish Basecamp
Lift of balloon
- The volume of a sphere is 4/3 * pi * r^3, where r is the radius of the balloon.
- One cubic foot of helium will lift about 28.2 grams, so multiply the volume of the balloon by 28.2.
- Divide by 448 -- the number of grams in a pound -- to determine the number of pounds it can lift.
(4/3) * pi * (r^3) * 28.2 = lift in grams ((4/3) * pi * (r^3) * 28.2) / 448 = lift in pounds