Abstract: An annular water removal system (AWRS) for an air cycle environmental control system (ECS) includes a line replaceable unit (LRU) configured to output air flow, and a water collector coupled to the LRU. The water collector includes an upper portion and a lower portion. The upper portion includes a coalescing unit having a collector inlet to receive the air flow and configured to coalesce moisture from the air flow output from the LRU. The lower portion includes a collection unit in fluid communication with the coalescing unit. The collection unit is configured to collect the moisture coalesced by the coalescing unit.

Abstract: An annular water removal system (AWRS) for an air cycle environmental control system (ECS) includes a line replaceable unit (LRU) configured to output air flow, and a water collector coupled to the LRU. The water collector includes an upper portion and a lower portion. The upper portion includes a coalescing unit having a collector inlet to receive the air flow and configured to coalesce moisture from the air flow output from the LRU. The lower portion includes a collection unit in fluid communication with the coalescing unit. The collection unit is configured to collect the moisture coalesced by the coalescing unit.

Abstract: A heat exchanger includes a header and an annular core fluidly connected to the header. The annular core includes an inner diameter, an outer diameter, first flow channels arranged in a first set of layers, and second flow channels arranged in a second set of layers and interleaved with the first flow channels. Each of the first flow channels includes a first inlet, a first outlet, and a first axial region extending between the first inlet and the first outlet. Each of the second flow channels includes a second inlet, a second outlet, and a second axial region extending between the second inlet and the second outlet.

Abstract: An annular water removal system (AWRS) for an air cycle environmental control system (ECS) includes a line replaceable unit (LRU) configured to output air flow, and a water collector coupled to the LRU. The water collector includes an upper portion and a lower portion. The upper portion includes a coalescing unit having a collector inlet to receive the air flow and configured to coalesce moisture from the air flow output from the LRU. The lower portion includes a collection unit in fluid communication with the coalescing unit. The collection unit is configured to collect the moisture coalesced by the coalescing unit.

Abstract: A heat exchanger includes a header and an annular core fluidly connected to the header. The annular core includes an inner diameter, an outer diameter, first flow channels arranged in a first set of layers, and second flow channels arranged in a second set of layers and interleaved with the first flow channels. Each of the first flow channels includes a first inlet, a first outlet, and a first axial region extending between the first inlet and the first outlet. Each of the second flow channels includes a second inlet, a second outlet, and a second axial region extending between the second inlet and the second outlet.

Abstract: An outlet header of a heat exchanger is provided. The outlet header defines a flow-tap-off duct and includes an L-tube. The L-tube defines first and second legs. The first leg is fasteningly installed in the flow-tap-off duct such that the second leg is directed toward a cold-cold corner of the heat exchanger. The second leg is configured to capture cool air from the cold-cold corner for providing the cool air to and through the flow-tap-off duct and exterior the heat exchanger.

Abstract: A core arrangement for a heat exchanger includes a first core layer. The first core layer includes first upstream and downstream ends, first and second parting sheets parallel to one another, and a plurality of adjacent fins disposed between the first and second parting sheets. Each of the plurality of fins extends from a surface of the first parting sheet to a surface of the second parting sheet, and longitudinally between the first upstream end and the first downstream end. The plurality of fins are further laterally arranged to define a plurality of first fluid passages. Each of a subset of the plurality of fins includes an internal slot positioned away from the first upstream end and the first downstream end.

Abstract: A method of affixing a gasket to a flange of a heat exchanger core includes aligning the gasket with the flange of the heat exchanger core. The gasket includes a tab extending outward from the gasket. The flange of the heat exchanger core is contacted with the gasket. The gasket is secured to the flange by bending the tab of the gasket around an outer edge of the flange and such that relative motion between the gasket and the flange is prevented by the tab.

Abstract: A core arrangement for a heat exchanger includes a first core layer. The first core layer includes first upstream and downstream ends, first and second parting sheets parallel to one another, and a plurality of adjacent fins disposed between the first and second parting sheets. Each of the plurality of fins extends from a surface of the first parting sheet to a surface of the second parting sheet, and longitudinally between the first upstream end and the first downstream end. The plurality of fins are further laterally arranged to define a plurality of first fluid passages. Each of a subset of the plurality of fins includes an internal slot positioned away from the first upstream end and the first downstream end.

Abstract: A heat exchanger core includes a first sheet having a first side and a second side opposite to the first side, a second sheet opposing the first side of the first sheet, and a first fin extending between the first side of the first sheet and the second sheet. The first fin defines first channels that extend in a first direction, the first fin including a first slot that extends at a first angle between thirty degrees and sixty degrees from the first direction and fluidly connects at least two of the first channels together.

Abstract: A heat exchanger assembly includes an outlet header having a first side panel, a second side panel, and a front panel. The first side panel has a first side panel first portion, a first side panel second portion, and a first side panel arcuate portion. The second side panel has a second side panel first portion, a second side panel second portion, and a second side panel arcuate portion. The front panel extends between the first side panel first end and the second side panel first end. The front panel includes a front panel first end that abuts the first side panel first end and a front panel second end that abuts the second side panel first end.

Abstract: A heat exchanger core includes a first standard sheet having a first face and a second face opposite of the first face, a second standard sheet opposing the first face of the first standard sheet, a first fin extending between the first standard sheet and the second standard sheet, the first fin defining multiple channels, and a first partial sheet connected to the first face. The first partial sheet is smaller in width and/or height than the first face of the first standard sheet.

Abstract: A heat exchanger core includes a first sheet having a first side and a second side opposite to the first side, a second sheet opposing the first side of the first sheet, and a first fin extending between the first side of the first sheet and the second sheet. The first fin defines first channels that extend in a first direction, the first fin including a first slot that extends at a first angle between thirty degrees and sixty degrees from the first direction and fluidly connects at least two of the first channels together.

Abstract: A heat exchanger core includes a first standard sheet having a first face and a second face opposite of the first face, a second standard sheet opposing the first face of the first standard sheet, a first fin extending between the first standard sheet and the second standard sheet, the first fin defining multiple channels, and a first partial sheet connected to the first face. The first partial sheet is smaller in width and/or height than the first face of the first standard sheet.

Abstract: A heat exchanger tube assembly includes a tube. The tube includes a first end, a second end disposed opposite from the first end, an outer surface, and an inner surface defining an interior space. A plurality of channels are formed within the interior space. A first sleeve is fixed to the outer surface of the tube near the first end and a second sleeve fixed to the outer surface of the tube near the second end.

Abstract: A heat exchanger assembly includes an outlet header having a first side panel, a second side panel, and a front panel. The first side panel has a first side panel first portion, a first side panel second portion, and a first side panel arcuate portion. The second side panel has a second side panel first portion, a second side panel second portion, and a second side panel arcuate portion. The front panel extends between the first side panel first end and the second side panel first end. The front panel includes a front panel first end that abuts the first side panel first end and a front panel second end that abuts the second side panel first end.

Abstract: A heat exchanger to exchange heat between a ram air flow and a liquid flow includes a plurality of ram air layers that direct air, wherein each ram air layer is a single pass layer including a plurality of ram air fins in fluid communication with the ram air flow, and a plurality of liquid pass layers, wherein each liquid pass layer is a five pass layer including a plurality of liquid pass fins in fluid communication with the liquid flow, and each of the plurality of liquid pass layers is disposed adjacent to at least one ram air layer of the plurality of ram air layers.

Abstract: A heat exchanger for an aircraft includes a hot fluid inlet, a hot fluid outlet, a cold fluid inlet, a cold fluid outlet, and a header connected to the hot fluid outlet. The header includes a housing defining a header volume and a baffle separating the header volume into a first volume and a second volume, wherein the first volume and the second volume are in fluid communication with each other.

Abstract: A heat exchange system includes a cold fluid circuit and a hot fluid circuit. The cold fluid circuit routes a cold fluid to a ram air inlet. From the ram air inlet, the cold fluid is routed to a cold fluid inlet of a heat exchanger. The cold fluid is then routed to a cold fluid outlet of the heat exchanger. The hot fluid circuit is configured to route a hot fluid. The hot fluid is routed through a bleed air valve. From the bleed air valve, the hot fluid is routed to a hot fluid inlet of the heat exchanger. The hot fluid is then routed to a hot fluid outlet of the heat exchanger. The hot fluid is then routed to a header having a first cavity and a second cavity defined within a housing and separated by a baffle.

Abstract: A manifold for a heat exchanger assembly includes a body with a first end disposed opposite a second end, and a top surface disposed opposite a bottom surface. A first side surface extends between the top and bottom surfaces, and a second side surface extends between the top and bottom surfaces opposite the first side surface. A first plurality of chambers is formed in the body with each chamber of the first plurality of chambers being spaced apart from one another between the first end and the second end of the body. A second plurality of chambers is formed in the body with each chamber of the second plurality of chambers being spaced apart from one another between the first end and the second end of the body.