MMH¶
MMH or Monomethylhydrazine (CH3NHNH2) is a storable liquid fuel that found favor in the United States for use in orbital spacecraft engines. Its advantages in comparison to UDMH are higher density and slightly higher performance.
Reference Points¶
MMH == MonoMethylHydrazine
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 | 527.7 | 14.7 | 0.8798 | 0.700 | 377.0 | 8.449e-03 | 0.1442 | 1.959e-04 |
| AFRPL-TR-69-149 | 536.4 | 14.7 | 0.8702 | 0.700 | 376.9 | 7.750e-03 | 0.1431 | 1.932e-04 |
| RefProp | 527.7 | 0.7 | 0.8756 | 0.689 | 384.1 | 5.235e-03 | 0.1437 | 1.942e-04 |
| Aerojet | 527.7 | 14.7 | 0.8798 | 0.700 | 377.0 | 8.454e-03 | 0.1442 | --- |
| Vandenberg | 527.7 | 14.7 | 0.8749 | --- | 391.1 | --- | 0.1438 | --- |
Fluid Properties¶
MMH == MonoMethylHydrazine
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 | 46.072 | 1053.7 | 1195.0 | 0.2962 | 0.2634 | 649.5 | 397.4 | 0.28680 |
| AFRPL-TR-69-149 | 46.072 | 1053.0 | 1195.0 | 0.2900 | 0.2692 | 649.4 | 397.4 | --- |
| RefProp | 46.072 | 1036.8 | 1046.2 | 0.2847 | 0.2438 | 649.0 | 397.5 | 0.30081 |
| Aerojet | 46.072 | 1053.7 | 1195.0 | 0.2962 | 0.2634 | 649.5 | 397.4 | 0.28423 |
| Vandenberg | 46.072 | 1020.6 | 1210.9 | 0.1700 | 0.4801 | 649.2 | 397.4 | 0.42500 |
Vapor Pressure¶
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Density¶
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Heat Capacity¶
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Viscosity¶
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Heat of Vaporization¶
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Thermal Conductivity¶
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Surface Tension¶
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