Abstract: There are provided techniques and apparatuses for fan blade pitch setting. For example, there is provided an impeller including a ring disposed in a hub of the impeller. The ring can include a recess shaped and positioned to impart a specified pitch angle to a blade extending outwardly from the ring through the hub.

Abstract: A fan with a housing defining an interior and a flow path therein and a valve assembly including a valve element disposed in the flow path and configured to rotate between an opened position and a closed position, wherein the valve element closes the flow path and a linkage assembly and a method of operating.

Abstract: A fan with a housing defining an interior and a flow path therein and a valve assembly including a valve element disposed in the flow path and configured to rotate between an opened position and a closed position, wherein the valve element closes the flow path and a linkage assembly and a method of operating.

Abstract: An impeller fan assembly that includes a housing, a stator, a rotor having a hub and an annular array of non-stationary blades extending from the hub, at least two spaced apart bearings mounted to the stator, and a pump in fluid communication with the bearings to provide fluid to the bearings. A screw pump is provided within the hollow portion of the shaft. Inlet of the screw pump is fluidly coupled to the sump and outlet is in fluid communication with the bearings. Rotation of the screw pump pumps fluid from the sump to the bearings. A de-swirler is provided within the sump to reduce rotational movement of the fluid within the sump. The de-swirler has a hub with fixed curved vanes extending from the centerline of the hub. The curved vanes have curvature in a direction opposite from a rotational direction of the screw pump.

Abstract: A fan with a housing defining an interior and a flow path therein and a valve assembly including a valve element disposed in the flow path and configured to rotate between an opened position and a closed position, wherein the valve element closes the flow path and a linkage assembly and a method of operating.

Abstract: There are provided techniques and apparatuses for fan blade pitch setting. For example, there is provided an impeller including a ring disposed in a hub of the impeller. The ring can include a recess shaped and positioned to impart a specified pitch angle to a blade extending outwardly from the ring through the hub.

Abstract: A turbine engine system includes an inlet particle separator receiving an inlet fluid flow and having a clean outlet for a first flow of substantially clean fluid, and a scavenge outlet for a second flow of scavenge fluid. A fluid pump communicates with the scavenge outlet. The flow of scavenge fluid through the fluid pump is selectively regulated.

Abstract: An impeller fan assembly that includes a housing, a stator, a rotor having a hub and an annular array of non-stationary blades extending from the hub, at least two spaced apart bearings mounted to the stator, and a pump in fluid communication with the bearings to provide fluid to the bearings.

Abstract: An apparatus for a fan having an impeller with a hub and a plurality of blades extending from the hub includes a hub cap configured to mount to the hub of the impeller. The hub cap can include a plurality of slots corresponding to the blades of the impeller. The slots are sized to receive the blades when the hub cap is mounted to the hub, which shortens the working length of the blades.

Abstract: A fan assembly that includes a housing having an inner peripheral wall defining a flow through opening, a stator located within the through opening and comprising an annular array of stationary blades provided along the inner peripheral wall, a rotor comprising a hub having a front wall supporting an outer peripheral wall having a forward balancing ring and an aft balancing ring, and an annular array of non-stationary blades extending from the outer peripheral wall, and strengthening ribs.

Abstract: An impeller fan assembly that includes a housing, a stator, a rotor having a hub and an annular array of non-stationary blades extending from the hub, at least two spaced apart bearings mounted to the stator, and a pump in fluid communication with the bearings to provide fluid to the bearings.

Abstract: A method and system for a fan assembly that includes a fan casing having a longitudinal centerline axis extending from an upstream inlet opening to a downstream outlet opening is provided. The fan assembly also includes a first substantially cylindrical casing segment extending circumferentially about and substantially axially aligned with tips of a plurality of blades extending from a rotor hub, the first casing segment including a first inner diameter that is greater than the rotor diameter, a second casing segment configured to extend axially in a direction opposite a flow of fluid through the fan casing, the second casing segment including a second inner diameter, the second inner diameter less than the first inner diameter and the rotor diameter, and a third casing segment including the first inner diameter along a first circumferential edge, the second inner diameter along a second circumferential edge, and a surface extending therebetween.

Abstract: A method and system for a fan assembly that includes a fan casing having a longitudinal centerline axis extending from an upstream inlet opening to a downstream outlet opening is provided. The fan assembly also includes a first substantially cylindrical casing segment extending circumferentially about and substantially axially aligned with tips of a plurality of blades extending from a rotor hub, the first casing segment including a first inner diameter that is greater than the rotor diameter, a second casing segment configured to extend axially in a direction opposite a flow of fluid through the fan casing, the second casing segment including a second inner diameter, the second inner diameter less than the first inner diameter and the rotor diameter, and a third casing segment including the first inner diameter along a first circumferential edge, the second inner diameter along a second circumferential edge, and a surface extending therebetween.

Abstract: An engine cooling fan motor has a water baffle positioned in a water line of sight passage through structures surrounding the motor to prevent water from impacting on the air vents at the front end of the motor. The baffle blocks the water line of sight passage. In one aspect, a rear cover is spaced from the rear endwall of the motor and has one or more baffled inlets to create an airflow passage to air inlet vents on the rear endwall of the motor.