Abstract:
A system, which includes a plurality of heat exchangers and a compressing device, is configured to prepare in parallel a medium bled from a low-pressure location of an engine and flowing through a plurality of heat exchangers into a chamber. The compressing device is in communication with the plurality of heat exchangers and regulates a pressure of the medium flowing through the plurality of heat exchangers.
Abstract:
An aircraft environmental conditioning system is disclosed having an air cycle machine for conditioning an airflow comprising hot compressed air by reducing its temperature and pressure. The air cycle machine is disposed in a housing in an unpressurized area of the aircraft, and produces conditioned pressurized air for delivery to a pressurized area of the aircraft. The system also includes a vibration sensor disposed within the housing, and a controller in communication with the vibration sensor that is configured to respond to vibration detected by the vibration sensor.
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 environmental control system of an aircraft includes a ram air circuit including a ram air shell having a heat exchanger positioned therein and a dehumidification system arranged in fluid communication with the ram air circuit. A plurality of expansion devices is arranged in fluid communication with the ram air circuit and the dehumidification system. At least one of the expansion devices is a simple cycle expansion device.
Abstract:
An aircraft inert gas generating system includes a fuel source configured to supply fuel, a stream of reaction air having a first temperature, an air-fuel mixing unit configured to receive an amount of the fuel and an amount of the reaction air stream to create an air-fuel mixture, and a catalytic oxidation unit configured to receive and react the air-fuel mixture. The stream of reaction air includes an amount of mixing air from a mixing air source, and the mixing air source includes a primary heat exchanger of an aircraft ram circuit and a cooling air extraction element proximate the heat exchanger. The mixing air can alternatively include cool air from a heat sink air source.
Abstract:
A hierarchical fault detection and isolation system, method, and/or computer program product that facilitates fault detection and isolation in a complex networked system while reducing the computational complexity and false alarms is provided. The system, method, and/or computer program product utilizes a system level isolation and detection algorithm and a diagnostic tree to systematically isolate faulty sub-systems, components, etc. of the complex networked system.
Abstract:
A system, which includes a plurality of heat exchangers and a compressing device, is configured to prepare in parallel a medium bled from a low-pressure location of an engine and flowing through a plurality of heat exchangers into a chamber. The compressing device is in communication with the plurality of heat exchangers and regulates a pressure of the medium flowing through the plurality of heat exchangers. The compressing device is bypassed based on the preparing in parallel the medium for the chamber, which in turn enables the compressing device to windmill. Therefore, the system employs at least one mechanism to prevent components of the compressing device from windmilling.
Abstract:
A fuel tank inerting system is provided including an air flow comprising air from a first source having a first temperature and air from a second source having a second temperature. The second temperature is cooler than the first temperature. At least one separating module is configured to separate an inert gas from the air flow.
Abstract:
Aircraft air separation systems having a compressed air source arranged to supply compressed air, an air separation module arranged to receive air from the compressed air source, the air separation module arranged to separate air into nitrogen enriched air and oxygen enriched air, wherein the nitrogen enriched air is supplied to a fuel tank of the aircraft, and a source of mixing air arranged to fluidly supply the mixing air at a location between the compressed air source and the air separation module such that the mixing air is selectively mixed with the compressed air to generate treated air that is supplied to the air separation module.
Abstract:
A hierarchical fault detection and isolation system, method, and/or computer program product that facilitates fault detection and isolation in a complex networked system while reducing the computational complexity and false alarms is provided. The system, method, and/or computer program product utilizes a system level isolation and detection algorithm and a diagnostic tree to systematically isolate faulty sub-systems, components, etc. of the complex networked system.