His latest project is a 250lbf regeneratively cooled engine. It uses kerosene as the fuel, and liquid oxygen as the oxidizer. The neat thing is he utilizes the temperature change of the liquid ...

The density of liquid oxygen = 1.1 g/cm 3 The density of gaseous oxygen = 0.0014 g/cm 3 State Distance between particles Density Density in g/cm 3 Solid Very close together High Solid iron = 7.8 ...