Abstract: A precooler for an aircraft engine system includes a precooler core and a precooler inlet to direct a compressor bleed flow into the precooler core to cool the compressor bleed flow. The precooler further includes a precooler outlet to direct the compressor bleed flow from the precooler to a selected component of the aircraft engine system and a precooler bleed port through which a portion of the compressor bleed flow is diverted to a secondary component of the aircraft engine system. The precooler bleed port is oriented such that flow entering the precooler bleed port must substantially reverse direction from a direction of the compressor bleed flow through the precooler.

Abstract: A three stream aspirator includes an upstream passage for receiving and discharging a motivator stream, a low pressure passage for receiving and discharging a low pressure stream, and a Venturi for receiving and discharging the motivator stream and for drawing the low pressure stream through the low pressure passage. The aspirator body also includes a mixing passage for receiving and mixing the motivator stream and the low pressure stream, and a first aspirator outlet, located at the end of the mixing passage, configured to discharge the mixed stream from the aspirator. The aspirator body further includes an isolated passage for receiving a high pressure stream, wherein the high pressure stream is isolated from any other stream while within the aspirator; and a second aspirator outlet, adjacent to the first aspirator outlet, from which the high pressure stream is discharged.

Abstract: A three stream aspirator includes an upstream passage for receiving and discharging a motivator stream, a low pressure passage for receiving and discharging a low pressure stream, and a Venturi for receiving and discharging the motivator stream and for drawing the low pressure stream through the low pressure passage. The aspirator body also includes a mixing passage for receiving and mixing the motivator stream and the low pressure stream, and a first aspirator outlet, located at the end of the mixing passage, configured to discharge the mixed stream from the aspirator. The aspirator body further includes an isolated passage for receiving a high pressure stream, wherein the high pressure stream is isolated from any other stream while within the aspirator; and a second aspirator outlet, adjacent to the first aspirator outlet, from which the high pressure stream is discharged.

Abstract: A particle separator comprises a vessel, a fluid inlet, a fluid swirl passage, a scupper cavity, a first fluid outlet, and a second fluid outlet. The vessel includes a vessel sidewall extending between a vessel top side and a vessel bottom side. The fluid swirl passage includes a first passage end in communication with a fluid inlet disposed on the vessel top side. A second passage end is in communication with a vessel swirl cavity defined at least in part by an inner surface of the vessel sidewall. The scupper cavity includes a scupper entrance disposed along the inner surface of the vessel sidewall, and is spaced circumferentially apart from the second passage end. The first fluid outlet is in communication with the scupper cavity and disposed on the vessel bottom side. The second fluid outlet is disposed above the first fluid outlet in communication with the vessel swirl cavity.

Abstract: A particle separator comprises a vessel, a fluid inlet, a fluid swirl passage, a scupper cavity, a first fluid outlet, and a second fluid outlet. The vessel includes a vessel sidewall extending between a vessel top side and a vessel bottom side. The fluid swirl passage includes a first passage end in communication with a fluid inlet disposed on the vessel top side. A second passage end is in communication with a vessel swirl cavity defined at least in part by an inner surface of the vessel sidewall. The scupper cavity includes a scupper entrance disposed along the inner surface of the vessel sidewall, and is spaced circumferentially apart from the second passage end. The first fluid outlet is in communication with the scupper cavity and disposed on the vessel bottom side. The second fluid outlet is disposed above the first fluid outlet in communication with the vessel swirl cavity.

Abstract: A precooler for an aircraft engine system includes a precooler core and a precooler inlet to direct a compressor bleed flow into the precooler core to cool the compressor bleed flow. The precooler further includes a precooler outlet to direct the compressor bleed flow from the precooler to a selected component of the aircraft engine system and a precooler bleed port through which a portion of the compressor bleed flow is diverted to a secondary component of the aircraft engine system. The precooler bleed port is oriented such that flow entering the precooler bleed port must substantially reverse direction from a direction of the compressor bleed flow through the precooler.

Abstract: A valve comprises an inlet portion configured to couple to a source of a fluid, and a body portion in fluidic communication with the inlet portion. The body portion defines a modulated flow path and a constant flow path adjacent to the modulated flow path.

Abstract: A valve comprises an inlet portion configured to couple to a source of a fluid, and a body portion in fluidic communication with the inlet portion. The body portion defines a modulated flow path and a constant flow path adjacent to the modulated flow path.

Abstract: A valve comprises an inlet portion configured to couple to a source of a fluid, and a body portion in fluidic communication with the inlet portion. The body portion defines a modulated flow path and a constant flow path adjacent to the modulated flow path.

Abstract: A valve comprises an inlet portion configured to couple to a source of a fluid, and a body portion in fluidic communication with the inlet portion. The body portion defines a modulated flow path and a constant flow path adjacent to the modulated flow path.

Abstract: A heat exchanger assembly includes a plurality of fluid flow pathways including fins. Closure bars associated with each of the layers have a core reinforcing portion. Each core reinforcing portion includes first and second reinforcing members with a modified flow passage between them. The example embodiments include modified flow passages with generally C-shaped cross sections. The reinforcing portions preferably extend toward a center of the heat exchanger core varying distances along the body of the core so that reinforcing material is concentrated near the ends of the core where deformation caused by heat stress is most likely to occur.

Abstract: In a heat exchanger of the plate-fin type through which two fluid streams of different temperatures are passed through alternate layers in a cross-flow arrangement whereby heat transfer occurs between the two fluid streams, solid closure bars attached to the heat exchanger core are shaped and arranged in a manner such that the closure bars form a continuous protruding flange at the corners or along the length of the heat exchanger core. The headers, which previously were welded directly to the heat exchanger core, are now welded to the flange, thereby preventing damage to the brazed heat exchanger core components and adding flexibility between core and headers during thermal cycling. In a preferred embodiment the closure bars on one face of the heat exchanger have an "L" shape with the "L" extending away from the core, and the closure bars on the adjacent face are straight and extend beyond the edge of the core the same distance as the extended "L" and in the same plane to form a straight flange.

Abstract: A water separator consisting of a baffle and scupper is inserted inside the outlet header of a regenerative heat exchanger for removing water from the air discharged therefrom. The cooled air which contains water droplets leaving the core of the heat exchanger is passed through a baffle constructed to provide a gradual restriction in area in order to increase flow velocity. Heavy droplets of water are separated by the sudden change in airflow direction through the baffle and header. The flow including the heavier centrifuged water droplets then impinge on the inside surface of the header to which the accumulated particles of water adhere and are accelerated by the airflow and the contour of the header toward a scupper located downstream of the baffle opening. The water is collected in the scupper cavity, collected in a drain well, and drained with the assistance of gravity and the resulting pressure differential across the drain port.