Fact Checking
Well-Known Member
OT: SpaceX launch
They are bringing the RP-1 to pretty low temperatures too I think to increase its density: -7 °C IIRC?
Which is a dangerous game if we look at the viscosity of subcooled kerosene:
There's a sharp increase below 20 degrees Celsius, with kerosene turning into gel at lower temperatures before freezing at around -47 °C.
Technically 'subcooled' is any liquid that is below the boiling point, so both the fuel and the oxidizer used by SpaceX is subcooled.
Only oxidizer is subcooled![]()
They are bringing the RP-1 to pretty low temperatures too I think to increase its density: -7 °C IIRC?
Which is a dangerous game if we look at the viscosity of subcooled kerosene:
There's a sharp increase below 20 degrees Celsius, with kerosene turning into gel at lower temperatures before freezing at around -47 °C.
Technically 'subcooled' is any liquid that is below the boiling point, so both the fuel and the oxidizer used by SpaceX is subcooled.