Collins Engine Nozzles, Inc.

A system includes a wall panel with an exterior wall. An interior wall is separated from the interior wall by a variable insulation gap occupied by an insulation medium. A flow driver is connected in fluid communication with the insulation medium. The flow driver is configured to selectively switch properties of the insulation medium in the variable insulation gap between a conduction mode and in an insulation mode. The insulation medium has a first effective thermal conductivity in the insulation mode, and a second effective thermal conductivity in the conduction mode. The first effective thermal conductively is lower than the second effective thermal conductivity.

A valve system includes a spin chamber having an outlet drain configured to allow flow out of the spin chamber. A main spin surface of the spin chamber is defined around the outlet drain. A directional jet system is in fluid communication with the spin chamber. The directional jet system includes a member that is configured to move between a first position for directing a tangential flow around the drain, and a second position for directing a radial flow toward the drain.

An airblast fuel injector assembly for a gas turbine engine is disclosed, which includes an annular air swirler and a fuel injector, wherein the annular air swirler includes a main body, an inner air cooler, an inner air swirler and a prefilmer, and wherein the fuel injector includes a feed tube, which has at least one fuel tip projecting through a respective reception hole formed in the annular wall of the main body radially outboard from the inner air swirler.

A pressure swirl atomizer for a gas turbine engine includes atomizer passage walls that define an atomizer passage, a monolithic atomizer tip body abutting the atomizer passage which further includes a first end of the atomizer tip body with a plurality of swirl passages with a plurality of swirl entrances spaced circumferentially around the first end of the atomizer tip body, a central swirl chamber, wherein the plurality of swirl passages extend from the first end of the atomizer tip body to a first end of the central swirl chamber, and a second end of the atomizer tip body with an exit orifice, wherein inner walls of the central swirl chamber taper radially inward from the first end of the central swirl chamber to a second end of the central swirl chamber.

A tube joint comprising a first member having a bore defining an inner diameter; a second member having an outer surface configured to be received within the bore; a plurality of protrusions extending from at least one of the bore and the outer surface, wherein the plurality of protrusions being configured to center and retain the second member within the bore of the first member; and a braze joint proximate the plurality of protrusions.

A filter assembly a manifold having a fluid inlet and a fluid outlet and a filter housing having a filter medium provided therein. The filter medium defining an inner filter chamber and defining an outer filter chamber between the filter medium and the filter housing, the filter housing being removably attached to the manifold so as to provide a fluid flow path from the inlet into the inner filter chamber.

A fuel pre-heating component in a gas turbine engine includes a component housing extending around a central axis from a first end to a second end, wherein the component housing includes walls that define an inner chamber, a heating element positioned inside the inner chamber, and a plurality of internal fuel channels disposed within the component housing and configured to be heated by the heating element.

A filter assembly includes a manifold having a fluid inlet and a fluid outlet, a filter housing having a filter medium provided therein, the filter medium defining an inner filter chamber and defining an outer filter chamber between the filter medium and the filter housing, the filter housing being removably attached to the manifold so as to provide a fluid flow path from the inlet into the inner filter chamber, through the filter medium into the outer chamber and out of the outlet. The filter assembly further includes a valve assembly mounted inside the manifold that includes a valve piston and a valve spring arranged in engagement with the valve piston to bias the valve piston into a first position and to compress, in response to a pressure differential across the valve piston exceeding the spring force, to move the valve piston to a second position.

A valve system includes at least one spin chamber having an outlet drain configured to allow flow out of the spin chamber. A main spin surface of the at least one spin chamber is defined around the outlet drain. A directional jet system is in fluid communication with the at least one spin chamber. The directional jet system includes a plurality of members each is configured to move between a first position for directing a tangential flow around the drain of the at least one spin chamber and a second position for directing a radial flow toward the drain of the at least one spin chamber.

A combustor dome system includes an annular combustor dome defining a main axis therethrough. The combustor dome includes opposed upstream and downstream faces, wherein the upstream face is configured to face upstream toward a compressor discharge space, wherein the downstream face is configured to face downstream toward a combustor space. The downstream face has a curved cross-sectional profile. A plurality of nozzles extends at least partially through the combustor dome from the upstream face to the downstream face for injection of fuel into the combustor space. A fuel manifold is in fluid communication with the plurality of nozzles.