Abstract: A liquid system for circulating a liquid through a circulation loop includes a liquid pump, a primary liquid reservoir and an auxiliary liquid reservoir. The liquid pump pressurizes liquid within the circulation loop. The primary liquid reservoir has a primary variable volume expandable to accommodate volumetric expansion of pressurized liquid up to a threshold volume. The auxiliary liquid reservoir has an auxiliary variable volume expandable only after the threshold volume is exceeded up to a maximum volume.

Abstract: A multi-chamber heat exchanger header includes a header housing and an insert. The header housing has a first wall and a second wall generally opposite the first wall where the first and second walls define a track. The insert is positioned to engage with the track such that the insert separates the header into first and second manifold chambers. A method for forming a multi-chamber heat exchanger header includes extruding a header housing having first and second manifold chambers and a track, positioning an insert in the header housing to engage with the track, and welding or brazing the insert to the header housing.

Abstract: An aircraft heat exchanger that exchanges heat between fluid, like air, to be warmed and a medium, like a liquid, to be cooled has a first path that encounters the fluid to be warmed and carries the medium at a first temperature. A second path carries the medium at a second temperature adjacent to the first path. An insulation gap is disposed between the first path and the second path so that heat exchange between the first and second path is minimized.

Abstract: A liquid system for circulating a liquid through a circulation loop includes a liquid pump, a primary liquid reservoir and an auxiliary liquid reservoir. The liquid pump pressurizes liquid within the circulation loop. The primary liquid reservoir has a primary variable volume expandable to accommodate volumetric expansion of pressurized liquid up to a threshold volume. The auxiliary liquid reservoir has an auxiliary variable volume expandable only after the threshold volume is exceeded up to a maximum volume.

Abstract: An aircraft heat exchanger that exchanges heat between fluid, like air, to be warmed and a medium, like a liquid, to be cooled has a first path that encounters the fluid to be warmed and carries the medium at a first temperature. A second path carries the medium at a second temperature adjacent to the first path. An insulation gap is disposed between the first path and the second path so that heat exchange between the first and second path is minimized.

Abstract: A compound heat exchanger includes a plurality of adjacent, continuous fins. Each fin defines a channel having an associated fin axis. A first portion of each channel extends along the axis, and a second portion of each channel is tortuous in opposing directions about the axis.

Abstract: A multi-chamber heat exchanger header includes a header housing and an insert. The header housing has a first wall and a second wall generally opposite the first wall where the first and second walls define a track. The insert is positioned to engage with the track such that the insert separates the header into first and second manifold chambers. A method for forming a multi-chamber heat exchanger header includes extruding a header housing having first and second manifold chambers and a track, positioning an insert in the header housing to engage with the track, and welding or brazing the insert to the header housing.

Abstract: A thermal management system avoids problems associated with the recirculation of fuel through a fuel tank on an aircraft in a system that includes a fuel reservoir (70), a pump (72) for pumping fuel from the reservoir (70) to a first heat load (74) and then to a check valve (76) to a junction (78). At least one second heat load (80), (82), (84) is connected to the junction (78) and a fuel/fan air heat exchanger (104) having a fan air flow path in heat exchange relation with a fuel flow path having a fuel discharge end (106) connected to the junction (78). The fan air flow path is adapted to be connected to receive compressed air from the fan (30) of an engine (10). A bleed air/fuel heat exchanger (92) receives fuel from the second heat load and bleed air from the engine (10) and is connected to deliver fuel to the engine (10).

Abstract: A moisture collector for collecting moisture from moisture containing air exiting from an air conditioning system in substantially a first flow direction is disclosed. The collector including a moisture collector housing defining a volume. An inlet extends into the volume for receiving the moisture containing air from the air conditioning system while substantially moving in the first flow direction. An outlet extends out of the volume for exhausting substantially moisture free air. A device for redirecting the moisture containing air is positioned within the volume and upstream of the outlet. At the device, moisture is removed from the moisture containing air for forming the substantially moisture free air. An air passageway is defined in the volume for directing the substantially moisture free air from the device for redirecting toward the outlet along with the moisture. A volume for collecting the moisture is provided.

Abstract: An air cycle air conditioning system comprises a first air source for supplying cooling air and a second air source for supplying high temperature system air. The system further includes a device for transferring heat from the high temperature air and producing conditioned air having a temperature substantially lower than the high temperature system air. A mechanism for directing the conditioned air to the high temperature air prior to the high temperature air entering a component of the system for decreasing the temperature of the high temperature system air, prior to it contacting the system component is also provided.

Abstract: An air mixer, with a water collector, is disclosed for supplying recirculated cabin air in aircraft. In the preferred embodiment: used cabin air flows over pipes of colder fresh air to cool the used air and condense out most of the moisture contained in it; the fresh air and used air are passed over opposite faces of a ring of stator vanes, thereby imparting swirls to both types of airstreams; and the streams meet at the trailing tips of the stator vanes, where they corkscrew together to throw remaining coalesced moisture against a collection trough, from where it is discharged. The airstreams can now be injected into the cabin without droplets raining down on the passengers, nor ice clogging any pipes for the fresh air, which is typically supplied at below-freezing temperature.