Helium is by no means a scarce element, it’s after Hidrogen the second most abundant in the universe, 24% of the total element mass. It is not as abundant on Earth and has to be obtained from natural gas
Scarce for us terrestrians that don’t live in a futuristic sci-fi world where we go around harvesting resources from planets.
Rare does not mean that it is difficult to obtain, or that there is little on Earth. It is not a fuel that is spent when you use it, like oil or coal.
It is an inert, clean element, it is not toxic or polluting, it can be stored well and it is only used to give buoyancy to balloons and airships.
For this use there is more than enough, without having to enter the Sci Fi.
Is it more expensive and difficult to obtain than Hydrogen? Yes, but this with the savings in energy and fuel using it for airships instead of Keosene for so many airplanes and private jets, this is irrelevant. The energy expenditure of a blimp does not even reach 10% of that of a small plane, despite the high price of Helium.
Compared to the big ships, which can also be replaced by airships for transport, the difference is even greater, in these cases the airships are even faster
Scarce for us terrestrians that don’t live in a futuristic sci-fi world where we go around harvesting resources from planets.
Rare does not mean that it is difficult to obtain, or that there is little on Earth. It is not a fuel that is spent when you use it, like oil or coal. It is an inert, clean element, it is not toxic or polluting, it can be stored well and it is only used to give buoyancy to balloons and airships. For this use there is more than enough, without having to enter the Sci Fi. Is it more expensive and difficult to obtain than Hydrogen? Yes, but this with the savings in energy and fuel using it for airships instead of Keosene for so many airplanes and private jets, this is irrelevant. The energy expenditure of a blimp does not even reach 10% of that of a small plane, despite the high price of Helium. Compared to the big ships, which can also be replaced by airships for transport, the difference is even greater, in these cases the airships are even faster