Difference between revisions of "AirFish"

From Noah.org
Jump to: navigation, search
(Lift of balloon)
Line 7: Line 7:
 
=== Lift of balloon ===
 
=== Lift of balloon ===
  
# The volume of a sphere is 4/3 * pi * r3, where r is the radius of the 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.
 
# 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 06:41, 25 January 2008


Basecamp

The project management is through AirFish Basecamp

Lift of balloon

  1. The volume of a sphere is 4/3 * pi * r^3, where r is the radius of the balloon.
  2. One cubic foot of helium will lift about 28.2 grams, so multiply the volume of the balloon by 28.2.
  3. 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