An environmental control system for a space vehicle includes an oxygen supply, a nitrogen supply, a first pressure control panel having a first oxygen control board configured to receive an oxygen gas from the oxygen supply and a first nitrogen control board configured to receive a nitrogen gas from the nitrogen supply, and a supervisory controller configured to control the first pressure control panel and thereby to adjust a partial pressure of oxygen and an ambient pressure of an oxygen/nitrogen gas mixture within a first module.

An environmental control system for a space vehicle includes an oxygen supply, a nitrogen supply, a first pressure control panel having a first oxygen control board configured to receive an oxygen gas from the oxygen supply and a first nitrogen control board configured to receive a nitrogen gas from the nitrogen supply, and a supervisory controller configured to control the first pressure control panel and thereby to adjust a partial pressure of oxygen and an ambient pressure of an oxygen/nitrogen gas mixture within a first module.

An environmental control system includes an air conditioning subsystem and a contaminant removal subsystem downstream of the environment to be conditioned. The contaminant removal subsystem includes: a first gas-liquid contactor-separator; a second gas-liquid contactor-separator; and a dehumidifier disposed either upstream of the first gas-liquid contactor-separator or downstream of the second gas-liquid contactor-separator.

An environmental control system includes an air conditioning subsystem and a contaminant removal subsystem downstream of the environment to be conditioned. The contaminant removal subsystem includes: a first gas-liquid contactor-separator; a second gas-liquid contactor-separator; and a dehumidifier disposed either upstream of the first gas-liquid contactor-separator or downstream of the second gas-liquid contactor-separator.

A passenger cabin air distribution system includes a ventilation system and an ejector-diffuser. The ventilation system is operable to provide a conditioned air. The ejector-diffuser is positioned to receive a flow of the conditioned air from the ventilation system. The ejector-diffuser includes an induction unit and a diffuser section. The induction unit includes a secondary inlet in communication with a cabin air from a passenger cabin and is configured to mix the flow of the conditioned air with an induced flow of the cabin air into a mixed air. The diffuser section includes a discharge to eject the mixed air to the passenger cabin. The diffuser section is shaped to provide for efficient mixing with low backpressure in order to maintain the low motive pressure in the nozzle.

A passenger cabin air distribution system includes a ventilation system and an ejector-diffuser. The ventilation system is operable to provide a conditioned air. The ejector-diffuser is positioned to receive a flow of the conditioned air from the ventilation system. The ejector-diffuser includes an induction unit and a diffuser section. The induction unit includes a secondary inlet in communication with a cabin air from a passenger cabin and is configured to mix the flow of the conditioned air with an induced flow of the cabin air into a mixed air. The diffuser section includes a discharge to eject the mixed air to the passenger cabin. The diffuser section is shaped to provide for efficient mixing with low backpressure in order to maintain the low motive pressure in the nozzle.

A phase separator includes an inlet of an inlet duct to receive two-phase flow from a two-phase flow source that is in line with the inlet duct. The two-phase flow includes gas and liquid. The phase separator also includes a liquid permeable membrane arranged at an outlet of the inlet duct to pass the liquid for capture while diverting the gas to result in an annular flow of the gas around the liquid permeable membrane. An outlet of an outlet duct outputs the gas that is separated from the liquid and that results in the annular flow of the gas.

A phase separator includes an inlet of an inlet duct to receive two-phase flow from a two-phase flow source that is in line with the inlet duct. The two-phase flow includes gas and liquid. The phase separator also includes a liquid permeable membrane arranged at an outlet of the inlet duct to pass the liquid for capture while diverting the gas to result in an annular flow of the gas around the liquid permeable membrane. An outlet of an outlet duct outputs the gas that is separated from the liquid and that results in the annular flow of the gas.

Methods, devices, and systems are described for a core of a space habitat. The core includes a plurality of internal beams extending a length of the core. The core also includes a plurality of end rings at a first end of the core and a second end of the core, the plurality of end rings spaced the length of the core. The core also includes an internal ring coupled to the internal beams between the first end and the second end.

Methods, devices, and systems are described for a core of a space habitat. The core includes a plurality of internal beams extending a length of the core. The core also includes a plurality of end rings at a first end of the core and a second end of the core, the plurality of end rings spaced the length of the core. The core also includes an internal ring coupled to the internal beams between the first end and the second end.