Methane¶
Methane (CH4) is the main constituent of Liquefied natural gas (LNG). Methane provides longer and easier storage and higher density than hydrogen for long-duration space missions. Typically used as LOX/CH4
LOX/CH4 is currently under development for the SpaceX Raptor
Reference Points¶
Methane == CH4
Hover over column headers to see definitions, values to see alternate units
| Tref | Pref | SG | Cp | dHvap | Visc | Cond | Surf | |
|---|---|---|---|---|---|---|---|---|
| Source | R | psia | g/ml | BTU/lbm-R | BTU/lbm | poise | BTU/hr-ft-R | lbf/in |
| RocketProps | 201.0 | 14.7 | 0.4224 | 0.832 | 219.8 | 1.168e-03 | 0.1062 | 7.592e-05 |
| RefProp | 201.0 | 14.7 | 0.4224 | 0.832 | 219.8 | 1.168e-03 | 0.1062 | 7.592e-05 |
Fluid Properties¶
Methane == CH4
Hover over column headers to see definitions, values to see alternate units
| MolWt | Tc | Pc | SGc | Zc | Tnbp | Tmelt | omega | |
|---|---|---|---|---|---|---|---|---|
| Source | g/gmole | R | psia | g/ml | (-) | R | R | (-) |
| RocketProps | 16.043 | 343.0 | 667.1 | 0.1627 | 0.2864 | 201.0 | 163.3 | 0.01142 |
| RefProp | 16.043 | 343.0 | 667.1 | 0.1627 | 0.2864 | 201.0 | 163.3 | 0.01142 |
| Gas&Liq 5th Ed | 16.043 | 343.0 | 667.0 | 0.1627 | 0.2863 | 201.0 | 163.2 | 0.01100 |
