Obviously the number is meant to be taken 99.99…% literally, which is the same as 100% by the way. And is not just another way of writing much much harder. That would be lame!
But to be fair, I rounded the 100 up from 99.7, which I found by adding 99 and 0.7.
So as you can see the math is solid.
But the problem with Hydrogen is not just that it is a gas, which is already inherently more difficult than liquids.
The real problem is that it is a gas basically consisting of only a proton with an electron. So the smallest possible atom, so small it can permeate any material that exist. The only difference is in how fast. When you then also at the same time want to make the container light weight, because if it’s to heavy it completely defeats the purpose, then you have a recipe for problems.
There’s a reason that despite the advantages, there has never been found a practical use for airships. It’s not that we can’t make them, they are just not any good for practical purposes.
Helium is actually worse in many ways, it is expensive, and it is twice as heavy, so it requires more volume to carry the same weight.
Meaning it is more expensive, slower and more vulnerable to the winds.
Atmospheric air is 1.29 g/L. Helium is 0.18 g/L and Hydrogen 0.09 g/L.
So hydrogen can lift 0.09 g more per liter or 7% more than helium.
Not as bad as I thought, but still Helium is less efficient.
How to you get to that number?
Obviously the number is meant to be taken 99.99…% literally, which is the same as 100% by the way. And is not just another way of writing much much harder. That would be lame!
But to be fair, I rounded the 100 up from 99.7, which I found by adding 99 and 0.7.
So as you can see the math is solid.
But the problem with Hydrogen is not just that it is a gas, which is already inherently more difficult than liquids.
The real problem is that it is a gas basically consisting of only a proton with an electron. So the smallest possible atom, so small it can permeate any material that exist. The only difference is in how fast. When you then also at the same time want to make the container light weight, because if it’s to heavy it completely defeats the purpose, then you have a recipe for problems.
There’s a reason that despite the advantages, there has never been found a practical use for airships. It’s not that we can’t make them, they are just not any good for practical purposes.
Let’s just… uhhh… go back to helium.
Helium is actually worse in many ways, it is expensive, and it is twice as heavy, so it requires more volume to carry the same weight.
Meaning it is more expensive, slower and more vulnerable to the winds.
Atmospheric air is 1.29 g/L. Helium is 0.18 g/L and Hydrogen 0.09 g/L.
So hydrogen can lift 0.09 g more per liter or 7% more than helium.
Not as bad as I thought, but still Helium is less efficient.