What is the approximate density relationship between liquid methane fuel and RP-1 fuel?

Answer

Liquid methane is about half the density of kerosene (RP-1).

The provided table shows that the approximate density of LCH4 is around 420 kg/m^3, while RP-1 is around 810 kg/m^3, meaning methane is about half as dense.

What is the approximate density relationship between liquid methane fuel and RP-1 fuel?

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