Abstract: A heat exchanger assembly for an aircraft includes a first heat exchanger with a first hot air circuit, a second heat exchanger with a second hot air circuit, a third heat exchanger with a third hot air circuit, and a cold circuit. The first heat exchanger is in fluid communication with a source of bleed air from the engine. The second heat exchanger is disposed adjacent to and in fluid communication with the first heat exchanger. The third heat exchanger is disposed adjacent to and in fluid communication with the second heat exchanger. The first, second, and third heat exchangers are fluidly connected in series. The cold air circuit passes through each of the first, second, and third heat exchangers. The first, second, and third heat exchangers are in cross-flow communication with the cold air circuit.

Abstract: An isolation valve comprising: a housing having an internal surface within the housing, the internal surface having a first outlet and second outlet; an air gate having an outward face opposite the internal surface, the air gate located within the housing and configured to move to at least one of a first position blocking flow to the first outlet, a neutral position blocking flow to neither the first outlet nor second outlet, and a second position blocking flow to the second outlet; a seal groove located on the outward face of the air gate; a seal located within seal groove, the seal configured to form a sealed connection with the internal surface around at least one of the first outlet when in the first position and the second outlet when in the second position; and a retainer configured to secure the seal within the seal groove using a fastening mechanism.

Abstract: A ram air fan and fan bypass shutoff check valve assembly includes a ram air fan configured to draw an airflow through a fan inlet, and a ram fan bypass duct positioned downstream of the ram air fan. The ram fan bypass duct includes a valve assembly configured to selectably direct the airflow through the ram air fan when the valve assembly is in an open position, and direct the airflow through a bypass duct thereby bypassing the ram air fan when the valve assembly is in a closed position.

Abstract: An ozone converter includes a toroidal shaped inlet housing and an outlet housing that is removably coupled to the inlet housing. The converter also includes a ring shaped ozone removable core disposed at least partially within the inlet housing.

Abstract: An air supply manifold includes an outer duct, a first inner duct, and a second inner duct. The outer duct is configured to transfer a fluid from the outer duct inlet to the outer duct outlet and includes an outer duct inlet and an outer duct outlet. The first inner duct is disposed within and passes through the outer duct and includes a first inner duct inlet and a first inner duct outlet. The first inner duct inlet and outlet are disposed outside of the outer duct. The second inner duct includes a second inner duct outlet and inlet fluidly connected to the first inner duct. The second inner duct is disposed within the outer duct and branches off from the first inner duct. The second inner duct outlet is disposed outside of the outer duct.

Abstract: An isolation valve comprising: a housing having an internal surface within the housing, the internal surface having a first outlet and second outlet; an air gate having an outward face opposite the internal surface, the air gate located within the housing and configured to move to at least one of a first position blocking flow to the first outlet, a neutral position blocking flow to neither the first outlet nor second outlet, and a second position blocking flow to the second outlet; a seal groove located on the outward face of the air gate; a seal located within seal groove, the seal configured to form a sealed connection with the internal surface around at least one of the first outlet when in the first position and the second outlet when in the second position; and a retainer configured to secure the seal within the seal groove using a fastening mechanism.

Abstract: A heat exchanger is having: a housing having a first housing inlet, a second housing inlet, a first housing outlet, and a second housing outlet; and a core assembly disposed within the housing and removably connected to the housing, the core assembly comprises: a first fluid passage fluidly connecting the first housing inlet to the first housing outlet and a second fluid passage fluidly connecting the second housing inlet to the second housing outlet. The first fluid passage is thermally connected to the second fluid passage.

Abstract: An ozone converter includes a toroidal shaped inlet housing and an outlet housing that is removably coupled to the inlet housing. The converter also includes a ring shaped ozone removable core disposed at least partially within the inlet housing.

Abstract: An air separation module including a canister defining an interior chamber and having a first port at a first end and a second port at a second end, the canister configured to permit fluid to pass from the first port to the second port through the interior chamber, a first end cap located proximal to the first end of the canister and configured to releasably retain the first end of the canister, a second end cap located proximal to the second end of the canister and configured to releasably retain the second end of the canister, and a collar movably configured on the second end of the canister and configured to move from a first position to a second position, wherein the first position defines an engagement between the collar and the second end cap, and the second position defines a disengagement between the collar and the second end cap.

Abstract: Tandem air cycle machine modules include a first air cycle machine having a first compressor and a first turbine, a second air cycle machine having a second compressor and a second turbine, and a structural manifold operably connected to both the first air cycle machine and the second air cycle machine.

Abstract: Environmental control systems for aircraft including a ram module having a primary heat exchanger and a secondary heat exchanger, a refrigeration module having an air cycle machine module and a condenser heat exchanger, and a first altitude diverter valve operable from a first position wherein the primary and secondary heat exchangers operate in series and a second position wherein the primary and secondary heat exchanger operate in parallel. Air from the primary and secondary heat exchangers is provided to (i) the condenser heat exchanger when the primary and secondary heat exchangers operate in series and (ii) an aircraft cabin when the primary and secondary heat exchangers operate in parallel.

Abstract: Heat exchangers include a heat exchanger core defining at least two separate heat exchanger flow streams, a first header configured on the heat exchanger core and fluidly connected to a first of the separate heat exchanger flow streams, a second header configured on the heat exchanger core and fluidly connected to a second of the separate heat exchanger flow streams, and an integrated bypass system configured to directly fluidly connect the first header to the second header with a bypass conduit, the integrated bypass system having a control valve within the bypass conduit and configured to control flow through the bypass conduit.

Abstract: Environmental control system for aircraft are provided having a ram module having a primary heat exchanger and a secondary heat exchanger, a refrigeration module having an air cycle machine module and a condenser heat exchanger module, and at least one conduit fluidly connecting the ram module to the refrigeration module such that the ram module and the refrigeration module can be installed in two separate volumes of the aircraft.

Abstract: A duct is provided and includes a tubular member having an inlet portion, an outlet portion and a central portion interposed between the inlet and outlet portions and a tributary tubular member fluidly coupled to the tubular member at the central portion. The tributary tubular member includes first and second torus sectors defining first and second apertures, respectively, through which an upstream end of the central portion extends. The second torus sector is disposed within the first torus sector to define a sectioned toroidal annulus about the first and second apertures and between an exterior surface of the second torus sector and an interior surface of the first torus sector.

Abstract: An air separation system is provided that includes at least one air separation module having a first end and a second end and at least one mounting assembly removably connected the at least one air separation module and configured to mount the at least one air separation module in an aircraft. The at least one mounting assembly includes a first end cap removably connected to the first end of the at least one air separation module, a second end cap removably connected to the second end of the at least one air separation module, and at least one bracket configured to removably connect one of the first end cap and the second end cap to an aircraft.

Abstract: An air separation system is provided that includes at least one air separation module having a first end and a second end and at least one mounting assembly removably connected the at least one air separation module and configured to mount the at least one air separation module in an aircraft. The at least one mounting assembly includes a first end cap removably connected to the first end of the at least one air separation module, a second end cap removably connected to the second end of the at least one air separation module, and at least one bracket configured to removably connect one of the first end cap and the second end cap to an aircraft.

Abstract: An air separation module including a canister defining an interior chamber and having a first port at a first end and a second port at a second end, the canister configured to permit fluid to pass from the first port to the second port through the interior chamber, a first end cap located proximal to the first end of the canister and configured to releasably retain the first end of the canister, a second end cap located proximal to the second end of the canister and configured to releasably retain the second end of the canister, and a collar movably configured on the second end of the canister and configured to move from a first position to a second position, wherein the first position defines an engagement between the collar and the second end cap, and the second position defines a disengagement between the collar and the second end cap.

Abstract: An ozone converter that includes an outer housing having an inlet and an outlet is disclosed. In this embodiment the ozone converter includes a core disposed within the outer housing and a bypass cylinder disposed between the inlet and the outlet and that passes through the core such that air within the bypass cylinder does not contact the core. The ozone converter of this embodiment also includes a blocking sleeve that surrounds a portion of the bypass cylinder and that is moveable from a first position to a second position. When the bypass sleeve is in the first position air that enters in the inlet is directed by the blocking sleeve into the bypass cylinder and when it is in the second position air that enters the inlet is allowed to enter an outer passage between the bypass cylinder and the outer housing.

Abstract: An assembly for an environmental control system includes a primary air-to-air heat exchanger and an aft manifold. The aft manifold is mounted to the primary heat exchanger and is adapted with a first duct to receive air flow from the primary heat exchanger. The aft manifold has a bypass duct and the bypass duct is configured to selectively allow air flow to bypass the primary heat exchanger.

Abstract: A water collector is telescoped into the interior of an aircraft condenser. The condenser has a header for collecting air from the condenser and the water collector is disposed at least partially within the header.