3 ms·
In some cases the helium cost is comparable to that of the propellants! Both are negligible compared to the total cost of space launch currently, but once reus
by Gravityloss 6y ago
In some cases the helium cost is comparable to that of the propellants!
Both are negligible compared to the total cost of space launch currently, but once reusability and operations become more streamlined, they start mattering more.