Abstract: An air conditioning pack management system for controlling distribution of a predetermined amount of conditioned air from a system comprising two or more air conditioning packs, the pack management system comprising a management unit arranged to proportion the predetermined amount of conditioned air to be provided by one or more of the two or more packs based on the respective operating efficiencies of the packs or other pre-selected metrics.

Abstract: An air quality sensor includes a detector element array, a processor operatively connected to the detector element array, and a memory. The memory is disposed in communication with the processor and has instructions recorded on the memory that, when read by the processor, cause the processor to execute certain operations including measuring electrical resistance of one of more detector element of the detector element array. A difference is calculated between the measured resistance and a reference resistance, and a determination is made of presence or absence of a contaminant in air communicated to the detector element array from an atmosphere of an aircraft cabin based on the difference between the measured resistance and the reference resistance. Aircraft and methods of monitoring air quality also described.

Abstract: An environmental control system that includes a first environmental control system pack, a first recirculation fan assembly, and a cabin air sensor unit. The first environmental control system pack is arranged to provide conditioned air to an aircraft cabin. The first recirculation fan assembly is arranged to recirculate a first cabin air fluid flow back to the aircraft cabin. The cabin air sensor unit is arranged to provide a first air quality signal indicative of an air quality of the first cabin air fluid flow to a controller.

Abstract: A thermal management system for one or more aircraft components includes a bleed airflow source at a gas turbine engine of the aircraft, one or more turbines configured to expand the bleed airflow, thus lowering a temperature of the bleed airflow, the bleed airflow driving rotation of the one or more turbines. One or more heat exchangers are in fluid communication with the one or more turbines. The one or more heat exchangers are configured to exchange thermal energy between the bleed airflow and a thermal load. One or more electrical generators are operably connected to the one or more turbines. The one or more electrical generators are configured to convert rotational energy of the one or more turbines to electrical energy.

Abstract: An ultraviolet light surface protection system for a duct may comprise an interior surface of the duct; a light source operable to emit a germicidal ultraviolet light into a flow path of the duct defined by the interior surface of the duct to sterilize an air to be provided to a conditioned area; and a coating disposed on the interior surface, the coating configured to be ultraviolet resistive, reflective, and anti-microbial.

Abstract: An air management system of a vehicle having a conditioned area includes at least one duct defining a flow path for delivering air to the conditioned area and a filter arranged within the at least one duct upstream from the conditioned area. The filter includes a filter media having at least one filter media layer including a plurality of fibers. A coating is applied to at least a portion of the plurality of fibers and the coating is operable to deactivate a microbe arranged in contact with the coating.

Abstract: A system including a passenger area of a vehicle, an air distribution system arranged in fluid communication with the passenger area, and a fluid movable through the air distribution system to the passenger area, the fluid having a cleaning agent entrained therein.

Abstract: An air management system of a vehicle having a conditioned area includes at least one duct defining a flow path for delivering air to the conditioned area and a sterilization system associated with the at least one duct. The sterilization system including at least one light source operable to emit a germicidal ultraviolet light into the flow path defined by the at least one duct to sterilize the air to be provided to the conditioned area.

Abstract: An air conditioning pack management system for controlling distribution of a predetermined amount of conditioned air from a system comprising two or more air conditioning packs, the pack management system comprising a management unit arranged to proportion the predetermined amount of conditioned air to be provided by one or more of the two or more packs based on the respective operating efficiencies of the packs or other pre-selected metrics.

Abstract: A system for processing recirculation air recovered from an aircraft cabin includes a mixing chamber and a carbon dioxide removal system. The carbon dioxide removal system has an inlet for recovered recirculation air from the aircraft cabin, an outlet to the mixing chamber; at least two assemblies of carbon dioxide sorbent that are thermally linked, a CO2 outlet valve; and a controller for managing desorption of carbon dioxide from the sorbent depending on aircraft status. The mixing chamber has an inlet from the carbon dioxide removal system, an inlet from an environmental control system, and an outlet connected to the aircraft cabin.

Abstract: A thermal management system for one or more aircraft components includes a bleed airflow source at a gas turbine engine of the aircraft, one or more turbines configured to expand the bleed airflow, thus lowering a temperature of the bleed airflow, the bleed airflow driving rotation of the one or more turbines. One or more heat exchangers are in fluid communication with the one or more turbines. The one or more heat exchangers are configured to exchange thermal energy between the bleed airflow and a thermal load. One or more electrical generators are operably connected to the one or more turbines. The one or more electrical generators are configured to convert rotational energy of the one or more turbines to electrical energy.

Abstract: An air quality sensor includes a detector element array, a processor operatively connected to the detector element array, and a memory. The memory is disposed in communication with the processor and has instructions recorded on the memory that, when read by the processor, cause the processor to execute certain operations including measuring electrical resistance of one of more detector element of the detector element array. A difference is calculated between the measured resistance and a reference resistance, and a determination is made of presence or absence of a contaminant in air communicated to the detector element array from an atmosphere of an aircraft cabin based on the difference between the measured resistance and the reference resistance. Aircraft and methods of monitoring air quality also described.

Abstract: An environmental control system that includes a first environmental control system pack, a first recirculation fan assembly, and a cabin air sensor unit. The first environmental control system pack is arranged to provide conditioned air to an aircraft cabin. The first recirculation fan assembly is arranged to recirculate a first cabin air fluid flow back to the aircraft cabin. The cabin air sensor unit is arranged to provide a first air quality signal indicative of an air quality of the first cabin air fluid flow to a controller.

Abstract: A system includes a portable air sensing device and an electronic interface device. The portable air sensing device is configured to sense a concentration of component gas in surrounding air and wirelessly transmit the sensed concentration. The electronic interface device is positioned within a cockpit of an aircraft and is communicatively coupled with the portable air sensing device. The electronic interface device is configured to receive the wirelessly transmitted concentration from the portable air sensing device, and generate, for display, an indication of the received concentration in relation to a defined threshold maximum concentration of the component gas.

Abstract: An environmental control system that includes a first environmental control system pack, a first recirculation fan assembly, and a cabin air sensor unit. The first environmental control system pack is arranged to provide conditioned air to an aircraft cabin. The first recirculation fan assembly is arranged to recirculate a first cabin air fluid flow back to the aircraft cabin. The cabin air sensor unit is arranged to provide a first air quality signal indicative of an air quality of the first cabin air fluid flow to a controller.

Abstract: A water extractor includes an outer duct with an inlet and an outlet, and an inner duct with an inlet and an outlet. The inner duct is positioned in the outer duct. The water extractor further includes a gap between the inner duct and the outer duct. The gap is tapered between a first position and a second position.

Abstract: A system for processing recirculation air recovered from an aircraft cabin includes a mixing chamber and a carbon dioxide removal system. The carbon dioxide removal system has an inlet for recovered recirculation air from the aircraft cabin, an outlet to the mixing chamber; at least two assemblies of carbon dioxide sorbent that are thermally linked, a CO2 outlet valve; and a controller for managing desorption of carbon dioxide from the sorbent depending on aircraft status. The mixing chamber has an inlet from the carbon dioxide removal system, an inlet from an environmental control system, and an outlet connected to the aircraft cabin.

Abstract: A water extractor includes an outer duct with an inlet and an outlet, and an inner duct with an inlet and an outlet. The inner duct is positioned in the outer duct. The water extractor further includes a gap between the inner duct and the outer duct. The gap is tapered between a first position and a second position.

Abstract: A system includes a portable air sensing device and an electronic interface device. The portable air sensing device is configured to sense a concentration of component gas in surrounding air and wirelessly transmit the sensed concentration. The electronic interface device is positioned within a cockpit of an aircraft and is communicatively coupled with the portable air sensing device. The electronic interface device is configured to receive the wirelessly transmitted concentration from the portable air sensing device, and generate, for display, an indication of the received concentration in relation to a defined threshold maximum concentration of the component gas.

Abstract: An environmental control system that includes a first environmental control system pack, a first recirculation fan assembly, and a cabin air sensor unit. The first environmental control system pack is arranged to provide conditioned air to an aircraft cabin. The first recirculation fan assembly is arranged to recirculate a first cabin air fluid flow back to the aircraft cabin. The cabin air sensor unit is arranged to provide a first air quality signal indicative of an air quality of the first cabin air fluid flow to a controller.