Abstract: A nozzle for use in an air cycle machine has a plate. A plurality of vanes extend away from the plate. The plurality of vanes extend for a height away from the plate. A width is defined as the closest distance between two adjacent vanes. A ratio of the height to the width is between 3.253 and 3.800. An air cycle machine and a method of repair are also disclosed.

Abstract: A self-acting pressure activated drain valve includes at least one inlet configured to receive a fluid. A drainage passage delivers the fluid to at least one outlet where the fluid is expelled. The self-acting pressure activated drain valve further includes a flexible diaphragm configured to operate in an open position and a closed position based on a pressure. The flexible diaphragm is normally biased in the open position such that fluid is delivered from the at least one inlet to the at least one outlet via the drainage passage. The pressure, however, initiates the closed position such that air is prevented from flowing through the drainage passage.

Abstract: A bearing monitoring system for an air cycle machine includes a housing. Also included is a compressor disposed within the housing. Further included is a turbine disposed within the housing. Yet further included is an axial shaft operatively coupled to the compressor and the turbine, the axial shaft disposed within the housing and between a first plurality of bearings. Also included is a radial shaft extending from the axial shaft, the radial shaft disposed within the housing and between a second plurality of bearings. Further included is at least one sensor mounted to the housing and oriented to monitor deflection of the radial shaft.

Abstract: A water extractor includes an inlet, an outlet a body, outer wall, inner wall, helical wall, plurality of catchment areas, and scuppers. The body extends between the inlet and the outlet. The inner wall is disposed radially inward from the outer wall and forms a main flow channel through a portion of the body. The helical wall extends between and is connected to the outer wall and the inner wall and forms a helical passageway fluidly connected to the inlet and the outlet. The helical passageway includes a plurality of turns along a bottom of the body. One of the catchment areas is disposed in each turn of the helical passageway. The scuppers are disposed in the catchment areas and are connected to and extend radially inward from the outer wall.

Abstract: An air separation module includes a plurality of fibers located within a casing. A fiber membrane defines an exterior of each of the plurality of fibers. The fiber membrane also forms an interior passage along a length of each of the plurality of fibers. The fiber membrane is configured to permeate a gas through the fiber membrane. At least one perforated canister is placed between the plurality of fibers. The at least one perforated canister is configured to collect a permeated gas from the plurality of fibers.

Abstract: An air cycle machine is provided. The machine includes a housing configured to enable airflow therethrough, a fan disposed within the housing and configured to rotate within the housing, and at least one aperture formed in the housing and configured to allow airflow through the at least one aperture from a cooling airflow path of an air cycle machine and into the housing. The at least one aperture is configured to optimally direct airflow passing therethrough toward the fan.

Abstract: A self-acting pressure activated drain valve includes at least one inlet configured to receive a fluid. A drainage passage delivers the fluid to at least one outlet where the fluid is expelled. The self-acting pressure activated drain valve further includes a flexible diaphragm configured to operate in an open position and a closed position based on a pressure. The flexible diaphragm is normally biased in the open position such that fluid is delivered from the at least one inlet to the at least one outlet via the drainage passage. The pressure, however, initiates the closed position such that air is prevented from flowing through the drainage passage.

Abstract: A bearing assembly includes a shaft and a thrust runner attached to the shaft. The shaft runner protrudes radially outward from the shaft. A thrust bearing is positioned axially adjacent to the thrust runner. A first flow passage is between the thrust runner and a first face of the thrust bearing. A second flow passage is between a second face of the thrust bearing and a housing. A restriction feature restricts a flow of fluid through the second flow passage.

Abstract: A piston assembly includes a piston with a first cap disposed on a first end of the piston and a second cap disposed on a second end of the piston. A piston cross-member is in between the first cap and the second cap. A first cover is affixed to a first side of the piston cross-member. A second cover is affixed to a second side of the piston cross-member. The second side of the piston cross-member is opposite the first side of the piston cross-member.

Abstract: A turbine thrust shaft providing a thrust disk having a surface P and a surface Q, and a shaft body formed through the thrust disk, the shaft body including a first plurality of holes, wherein the first plurality of holes are spaced apart and each hole of the first plurality of holes has a first diameter between 0.0600 inches to 0.0680 inches and has a first center disposed a first distance between 0.1400 inches to 0.1600 inches from surface P, and a second plurality of holes wherein the second plurality of holes are spaced apart and each hole of the second plurality of holes has a second diameter between 0.0960 inches to 0.1040 inches and has a second center disposed a second distance between 2.1350 inches to 2.1550 inches from surface Q.

Abstract: A valve includes a valve housing having an interior chamber and an actuator housing in which an actuator is disposed. The actuator housing is secured with the valve housing. A shaft is coupled with a valve member and the actuator and extends within a bore between the interior chamber of the valve housing and the actuator. The valve includes at least one vent passage that has a first end that opens to the bore and a second end that opens to an exterior of the valve housing and actuator housing.

Abstract: An ozone converter includes an outer housing having an inlet and an outlet, a first channel disposed between the inlet and the outlet, and a bypass channel disposed between the inlet and the outlet and separated from first channel. The converter also includes a core disposed within the first channel and a bypass control mechanism that includes one more blocking elements that causes inlet air to pass through the first channel or the bypass channel based on an altitude of the ozone converter. The control mechanism includes a piston that moves between at least a first position and a second position and a bellows that controls a flow a pressurized air to the piston.

Abstract: A bearing monitoring system for an air cycle machine includes a housing. Also included is a compressor disposed within the housing. Further included is a turbine disposed within the housing. Yet further included is an axial shaft operatively coupled to the compressor and the turbine, the axial shaft disposed within the housing and between a first plurality of bearings. Also included is a radial shaft extending from the axial shaft, the radial shaft disposed within the housing and between a second plurality of bearings. Further included is at least one sensor mounted to the housing and oriented to monitor deflection of the radial shaft.

Abstract: A gas bearing within a cylinder includes an anti-rotation tab sitting within a key way of the cylinder and a first foil forming an inner loop and an intermediary loop. The inner loop extends in a first direction from a first end to an intermediary portion. The intermediary loop extends from the intermediary to the anti-rotation tab.

Abstract: A cooling air flow path through an air cycle machine can include an inlet, at least one bearing downstream from the inlet and in fluidic connection with the inlet, an outlet downstream from the at least one bearing and in fluidic connection with the at least one bearing, and an adjustment device downstream from the at least one bearing and in fluidic connection with the at least one bearing and the outlet with the adjustment device configured to vary a flow of cooling air through the flow path by adjusting the cross-sectional area of the flow path.

Abstract: An air separation module includes a plurality of fibers located within a casing. A fiber membrane defines an exterior of each of the plurality of fibers. The fiber membrane also forms an interior passage along a length of each of the plurality of fibers. The fiber membrane is configured to permeate a gas through the fiber membrane. At least one perforated canister is placed between the plurality of fibers. The at least one perforated canister is configured to collect a permeated gas from the plurality of fibers.

Abstract: A journal air bearing is provided. The bearing includes a top foil configured to receive the shaft, an intermediate foil disposed radially outboard the top foil, and a journal sleeve disposed radially outboard the intermediate foil. The intermediate foil defines a plurality of holes configured to act as a vent to communicate fluid to an increased supply area to an air film.

Abstract: A system for managing a temperature of at least one bearing in an air cycle machine includes an inlet for allowing cooling air to enter the air cycle machine, at least one bearing downstream from the inlet and in fluidic connection with the inlet, an outlet downstream from the at least one bearing and in fluidic connection with the at least one bearing, a temperature sensor at a point between the inlet and the outlet, and an electronic controller electrically connected to and receiving temperature data from the temperature sensor with the electronic controller configured to modify an operation of the air cycle machine depending on the temperature data.

Abstract: A cooling air flow path through an air cycle machine can include an inlet, at least one bearing downstream from the inlet and in fluidic connection with the inlet, an outlet downstream from the at least one bearing and in fluidic connection with the at least one bearing, and an adjustment device downstream from the at least one bearing and in fluidic connection with the at least one bearing and the outlet with the adjustment device configured to vary a flow of cooling air through the flow path by adjusting the cross-sectional area of the flow path.

Abstract: A bearing assembly includes a shaft and a thrust runner attached to the shaft. The shaft runner protrudes radially outward from the shaft. A thrust bearing is positioned axially adjacent to the thrust runner. A first flow passage is between the thrust runner and a first face of the thrust bearing. A second flow passage is between a second face of the thrust bearing and a housing. A restriction feature restricts a flow of fluid through the second flow passage.