摘要:
An outflow valve (22) is provided. The outflow valve includes a frame (34) and a first door (30) rotatably coupled to the frame. The first door has a first side (50) opposite a second side (52) and a bellmouth (56). The bellmouth is defined by a super-ellipse (70), with a major axis (72) of the super-ellipse substantially parallel to the second side and a minor axis (74) of the super-ellipse substantially perpendicular to the second side (52). The outflow valve also includes a second door (32) rotatably coupled to the frame. The first door and the second door are substantially simultaneously movable between at least a first position and a second position.
摘要:
Disclosed herein is a hybrid mechanical/reactive pressure prevention system that includes a passive pressure control device (202) operably coupled to a door that allows air within a pressurized vehicle to flow out of the pressurized vehicle. An event module detects a door event in the pressurized vehicle. The door event indicates that a door is not secure and air within the pressurized vehicle is being released through the passive pressure control device. An altitude module (208) determines an altitude of the pressurized vehicle in response to detecting the door event. An electronic pressure control device (204) one or more of reduces air inflow into the pressurized vehicle and increases air outflow out of an active pressure control device of the pressurized vehicle in response to the altitude of the pressurized vehicle being below a cutoff altitude.
摘要:
A matched venturi assembly is provided and includes a venturi component (20) configured to provide for fluid communication between an inlet (21) and an outlet (23), sensors (30) coupled to the venturi component and configured to generate readings of characteristics of fluid flows proceeding through the venturi component and a venturi controller (40), which is receptive of the readings from the sensors. The venturi controller is configured to interpret the readings and is trimmable in a test phase where fluid flows with known characteristics are flown through the venturi component and interpretations of the readings are calibrated in accordance with differences between the readings and the known characteristics.
摘要:
A decompression arrangement (10) for an aircraft comprises a first cabin lining element (12) with an edge region (14), a second cabin lining element (20) with an edge region (22), the edge region (22) of the second cabin lining element (20) being arranged at a smaller distance from an aircraft outer skin (26) than the edge region (14) of the first cabin lining element (12), an air discharge opening (28), which is arranged between the edge region (14) of the first cabin lining element (12) and the edge region (22) of the second cabin lining element (20) and which is adapted, in the normal operation of the aircraft, to discharge air from an inner region of the cabin (18) delimited by the cabin lining elements (12, 20) into a region (30) of the aircraft lying between the cabin lining elements (12, 20) and the aircraft outer skin (26), and a decompression element (32), which is integrated in the second cabin lining element (20) and has a flap (34) which is pivotable about an axis (A) from a closed position, in which it closes a pressure equalising opening (35) formed in the decompression element (32), into a first open position, in which it opens the pressure equalising opening (35) formed in the decompression element (32) if a first predetermined differential pressure acts on the decompression element (32). The flap (34) of the decompression element (32) furthermore is pivotable about the axis (A) in a second direction opposite the first direction into a second open position, in which it opens the pressure equalising opening (35) formed in the decompression element (32) if a second predetermined differential pressure acts on the decompression element (32), the decompression element (32) being positioned relative to the first and the second cabin lining element (12, 20) in such a manner that the flap (34) in its second open position keeps clear a through-flow cross-section of the air discharge opening (28).
摘要:
In a method for controlling the pressure in an aircraft cabin (11), during flight operation of the aircraft, an effective flow cross-sectional area of at least one outflow valve (12) is controlled so as to adjust an air flow exiting the aircraft cabin (11) through the outflow valve (12) such that the pressure within the aircraft cabin (11) is controlled in accordance with a predetermined cabin pressure control strategy. Further, during flight operation of the aircraft, an effective flow cross-sectional area of at least one negative relief valve (14) is controlled so as to adjust an air flow entering the aircraft cabin (11) through the negative relief valve (14) such that a negative differential pressure between the pressure within the aircraft cabin (11) and an ambient pressure prevailing outside of the aircraft cabin (11) is prevented from exceeding a predetermined threshold value. During ground operation of the aircraft, the effective flow cross-sectional area of the at least one negative relief valve (14) is controlled so as to allow an equalization between the pressure within the aircraft cabin (11) and the ambient pressure prevailing outside of the aircraft.
摘要:
Die Erfindung betrifft ein Ventil (10) zur Steuerung des Innendrucks p i in einer Kabine eines Luftfahrzeugs, mit einer ersten Klappe (11) und einer zweiten Klappe (12), wobei die Klappen (11, 12) einen den Druck verändernden Fluidstrom (L) zwischen der Umgebung und der Kabine durch eine Öffnung (15) eines Begrenzungselements (14) der Kabine steuern. Um in der Einströmstellung der Klappen ein Ausströmen der Luft zu verhindern, ist eine Verschlusseinrichtung vorgesehen, die in der Einströmstellung der Klappen (11,12) einen Bereich (18) zwischen der ersten Klappe (11) und der zweiten Klappe (12) verschließt, der durch die Klappen (11,12) begrenzt wird.
摘要:
A compressing device (220) is added to a cabin air conditioning system to increase a pressure of air in the cabin air conditioning system itself and, thus, allow for lower pressure air to be bled from the engine. For instance, the compressing device allows air to be bled from a low, rather than a high, pressure locations of the engine.
摘要:
A refrigeration system (10) for providing cooled air to a plurality of galley compartments. The refrigeration system (10) includes a plurality of galley compartments configured to receive therein at least one galley cart (102), a refrigeration unit (20) configured to supply cooled air to the plurality of galley compartments, and an airflow supply and return system (30) coupling the refrigeration unit (20) to the plurality of compartments. The refrigeration system (10) also includes a plurality of valves (50, 52) coupled in the airflow supply and return system (30) for controlling flows of the cooled air through airflow supply and return system (30), each valve of the plurality of valves (50, 52) associated with a compartment of the plurality of compartments and a controller (60) in control communication with the plurality of valves (50, 52), the controller (60) configured to control the plurality of valves (50, 52) to achieve a first temperature in a first galley compartment of the plurality of galley compartments and a second temperature in a second galley compartment of the plurality of galley compartments, the first temperature being different than the second temperature.
摘要:
An active airflow control system 100, for an aircraft includes an air conditioning system 102, an air conditioning controller 110, configured to control operation of the air conditioning system, a plurality of flow control devices 104, in fluid communication with the air conditioning system and in signal communication with the air conditioning controller, wherein the plurality of flow control devices 104, are configured to increase and decrease an amount of air flowing therethrough in response to receiving a controlling signal from the air conditioning controller 110, and a plurality of zones in fluid communication with the air conditioning system, wherein each zone of the plurality of zones 105, is a pressurized zone of the aircraft, and wherein each zone of the plurality of zones is in fluid communication with at least one flow control device of the plurality of flow control devices.