3 ms·

Shouldn't it scale linearly with length? It's basically a cylinder, who's volume is heightPiradius^2. Unless you're also making it wider and taller, it's not

• h0l0cube 5y ago
  The way I read it, is that drag increases ^2 for length, but because volume increases lift for airships (as opposed to other aircraft) you get this ^3 increase in lift by increasing length. So airship economy increases with size, as opposed to an airplane. For the square-cube law, a cursory wiki search yields: > The square–cube law can be stated as follows: > When an object undergoes a proportional increase in size, its new surface area is proportional to the square of the multiplier and its new volume is proportional to the cube of the multiplier. https://en.wikipedia.org/wiki/Square%E2%80%93cube_law https://en.wikipedia.org/wiki/Square%E2%80%93cube_law