Propellant tank

In rocket vehicles, propellant tanks are fairly sophisticated since weight is on a premium.

Rocket propellant tanks are pressure vessels where liquid fuels are stored prior to use.

Rocket propellant tanks are often constructed of materials such as aluminium alloys, steels, carbon fibre wound tanks and other heat resistant, strong metals.

Normally, propellant in the tank is stored at a pressure of about 1-4 bar, if the system uses turbopump to deliver high pressure to the combustion chamber.

This method reduces the wall thickness and hence the weight of the tank.