Pressure Mode options.
| Member | Value | Description |
|---|---|---|
| eVAPressureModeBlowDown | 0 | Blow-Down - pressure decreases as propellant is consumed and the volume occupied by the pressurant gas consequently increases. This is based on the ideal gas law. |
| eVAPressureModePressureRegulated | 1 | Pressure-Regulated - constant pressure is maintained in the fuel tank through some pressurization mechanism as the propellant mass decreases. |