Abstract: An electronic module assembly includes a circuit card assembly (CCA) with heat generating electronic components. A connector is electrically connected to the heat generating electronic components, wherein the connector is positioned at a connection end of the CCA. A heatsink is mounted to the CCA, connected in thermal communication with the electronic components. An undulating channel feature is defined along a lateral edge of the heatsink relative to the connector. One or more channels of the undulating channel feature are aligned with an insertion axis defined by the connector.

Abstract: An assembly includes a circuit card assembly (CCA) module including a CCA with heat generating electronic components and a connector electrically connected to the heat generating electronic components. A chassis including an electrical interface is included. The connector of the CCA module is electrically connected to the electrical interface. The chassis includes a removable cover. A heat transfer element is included between the cover of the chassis and an edge of the CCA module for heat sinking heat from the heat generating electronic components through the heat transfer element to the cover of the chassis.

Abstract: An electronic module assembly includes a circuit card assembly (CCA) with heat generating electronic components. A connector is electrically connected to the heat generating electronic components, wherein the connector is positioned at a connection end of the CCA. A heatsink is mounted to the CCA, connected in thermal communication with the electronic components. An undulating channel feature is defined along a lateral edge of the heatsink relative to the connector. One or more channels of the undulating channel feature are aligned with an insertion axis defined by the connector.

Abstract: An electronic module assembly includes a circuit card assembly (CCA) including heat generating electronic components. A connector is electrically connected to the heat generating electronic components. The connector is positioned at a connection end of the CCA. A heatsink is mounted to the CCA and is connected in thermal communication with the electronic components. A wedge feature is defined along a lateral edge of the heatsink relative to the connector.

Abstract: An assembly includes a circuit card assembly (CCA) module including a CCA with heat generating electronic components and a connector electrically connected to the heat generating electronic components. A chassis including an electrical interface is included. The connector of the CCA module is electrically connected to the electrical interface. The chassis includes a removable cover. A heat transfer element is included between the cover of the chassis and an edge of the CCA module for heat sinking heat from the heat generating electronic components through the heat transfer element to the cover of the chassis.

Abstract: A bleed valve includes a housing with an inlet coupled to an outlet by a duct, a guide tube with an orifice fixed in the housing between the inlet and the outlet, a piston, and baffle. The piston is slideably supported on the guide tube and is movable between an open and a closed position, the duct fluidly coupling the inlet and outlet in the open position, the duct fluidly separating the inlet and outlet in the closed position. The orifice fluidly couples the inlet and outlet in the open and closed positions to move piston between the open and closed positions according to differential pressure between the bleed valve inlet and outlet. The baffle is slideably supported by the guide tube to set the differential pressure at which the piston moves between the open and closed positions. Gas turbines and differential pressure adjustment methods are also described.

Abstract: A bleed valve includes a housing with an inlet coupled to an outlet by a duct, a guide tube with an orifice fixed in the housing between the inlet and the outlet, a piston, and baffle. The piston is slideably supported on the guide tube and is movable between an open and a closed position, the duct fluidly coupling the inlet and outlet in the open position, the duct fluidly separating the inlet and outlet in the closed position. The orifice fluidly couples the inlet and outlet in the open and closed positions to move piston between the open and closed positions according to differential pressure between the bleed valve inlet and outlet. The baffle is slideably supported by the guide tube to set the differential pressure at which the piston moves between the open and closed positions. Gas turbines and differential pressure adjustment methods are also described.

Abstract: A piston assembly includes a piston with a first cap disposed on a first end of the piston and a second cap disposed on a second end of the piston. A piston cross-member is in between the first cap and the second cap. A cover is formed with the piston cross-member and extends between the first cap and second cap.

Abstract: A bleed valve includes a housing with an inlet coupled to an outlet by a duct, a guide tube with an orifice fixed in the housing between the inlet and the outlet, a piston, and baffle. The piston is slideably supported on the guide tube and is movable between an open and a closed position, the duct fluidly coupling the inlet and outlet in the open position, the duct fluidly separating the inlet and outlet in the closed position. The orifice fluidly couples the inlet and outlet in the open and closed positions to move piston between the open and closed positions according to differential pressure between the bleed valve inlet and outlet. The baffle is slideably supported by the guide tube to set the differential pressure at which the piston moves between the open and closed positions. Gas turbines and differential pressure adjustment methods are also described.

Abstract: A valve system includes a heat exchanger disposed within a heat exchanger manifold. The heat exchanger manifold has a first face defining a first flow inlet and an exhaust outlet, a second face disposed opposite the first face and defining a second flow inlet, a third face extending between the first face and the second face, and a first side and a second side disposed opposite the first side. The first side and the second side each extend between the first face, the second face, and the third face. A first torque motor assembly is mounted to the first side. A second torque motor assembly is mounted to the second side.

Abstract: A bleed valve includes a housing with an inlet coupled to an outlet by a duct, a guide tube with an orifice fixed in the housing between the inlet and the outlet, a piston, and baffle. The piston is slideably supported on the guide tube and is movable between an open and a closed position, the duct fluidly coupling the inlet and outlet in the open position, the duct fluidly separating the inlet and outlet in the closed position. The orifice fluidly couples the inlet and outlet in the open and closed positions to move piston between the open and closed positions according to differential pressure between the bleed valve inlet and outlet. The baffle is slideably supported by the guide tube to set the differential pressure at which the piston moves between the open and closed positions. Gas turbines and differential pressure adjustment methods are also described.

Abstract: An air filter assembly includes an air filter element with a pleated filter and seals incorporated at either end to prevent contaminants from bypassing the filter. The air filter assembly includes a filter cover, first, second and third seals, and an air filter element with a large diameter and low micron rating.

Abstract: A valve assembly includes a piston housing inside a flow duct between an inlet and an outlet so as to form an annular flow passage between the flow duct and the piston housing. The piston housing is axially aligned with a center axis of the flow duct. A piston is inside the piston housing and is configured to extend downstream of the piston housing in a closed position. A spring biases the piston to the open position. A fluid chamber is between the piston and an upstream end of the piston housing. A control opening extends through the upstream end of the piston housing and fluidically communicates with the flow duct and the fluid chamber. A control piston and a control spring are inside the piston housing. The control spring biases the control piston toward a first position that obstructs the control opening.

Abstract: A valve system includes a heat exchanger disposed within a heat exchanger manifold. The heat exchanger manifold has a first face defining a first flow inlet and an exhaust outlet, a second face disposed opposite the first face and defining a second flow inlet, a third face extending between the first face and the second face, and a first side and a second side disposed opposite the first side. The first side and the second side each extend between the first face, the second face, and the third face. A first torque motor assembly is mounted to the first side. A second torque motor assembly is mounted to the second side.

Abstract: A valve assembly includes a piston housing inside a flow duct between an inlet and an outlet so as to form an annular flow passage between the flow duct and the piston housing. The piston housing is axially aligned with a center axis of the flow duct. A piston is inside the piston housing and is configured to extend downstream of the piston housing in a closed position. A spring biases the piston to the open position. A fluid chamber is between the piston and an upstream end of the piston housing. A control opening extends through the upstream end of the piston housing and fluidically communicates with the flow duct and the fluid chamber. A control piston and a control spring are inside the piston housing. The control spring biases the control piston toward a first position that obstructs the control opening.

Abstract: A seal assembly for a creating a seal between a shaft and a valve housing of a bleed valve that impedes contaminants from reaching bearings includes first and second seal pieces. The first seal piece circumferentially surrounds the shaft and is disposed between the shaft and the valve housing. The second seal piece is in contact with and is disposed axially adjacent to the first seal piece relative to the shaft. The second seal piece is biased against the first seal piece.

Abstract: A seal assembly for a creating a seal between a shaft and a valve housing of a bleed valve that impedes contaminants from reaching bearings includes first and second seal pieces. The first seal piece circumferentially surrounds the shaft and is disposed between the shaft and the valve housing. The second seal piece is in contact with and is disposed axially adjacent to the first seal piece relative to the shaft. The second seal piece is biased against the first seal piece.

Abstract: An air filter assembly includes an air filter element with a pleated filter and seals incorporated at either end to prevent contaminants from bypassing the filter. The air filter assembly includes a filter cover, first, second and third seals, and an air filter element with a large diameter and low micron rating.

Abstract: A connector link for use in an actuation system for a butterfly valve has a central web extending between two generally cylindrical ends. There are bores formed in each of two generally cylindrical ends and bushings extend axially upwardly from a nominal face at each of the ends. One of the ends has a bore formed at a radius defined as a first distance. A distance between center points of the bores in the first and second ends is defined as a second distance. The ratio of the second distance to the first distance is greater than or equal to 19.2772 and less than or equal to 19.4125. A valve and method are also disclosed.

Abstract: A piston assembly includes a piston cross-member having a first end disposed opposite a second end. The piston assembly also includes a first cap disposed on the first end of the piston cross-member, and a second cap disposed on the second end of the piston cross-member. A slot is formed in the piston cross-member transverse to a length of the piston cross-member. An insert is disposed in the slot, wherein the insert is a wear article configured to contact a crank.