Gordon Dreyer went off to the pilot's locker room to get ready while the cryogenic tanks were being chilled down, then filled with liquid hydrogen.
Its relatively high cost of production and the need to store it in more expensive cryogenic tanks have hindered widespread commercial use.
Better insulation is needed, particularly on cryogenic tanks, to prevent too much propellant boiloff during coast.
The Stirling engine is heated by burning diesel fuel with liquid oxygen from cryogenic tanks.
We passed through a smaller room filled with shiny steel cryogenic tanks.
The second hand of the clock hanging above the cryogenic tanks had stopped, and that made her think maybe time had died.
I doubt I could even fill the cryogenic tanks by then.
The Mount's Delta was powered down, and its cryogenic tanks emptied.
Developments have also been made in the process of re-liquefying 'boil off' gas, letting it be returned to the cryogenic tanks.
The equipment includes cryogenic tanks, associated control panels, and avionics equipment.