An insert for an air intake of a suction duct, the insert including an inner portion configured to extend within the suction duct, a mating portion configured for sealingly engaging the air intake, and an outer portion configured for extending outside of the suction duct. The inner portion includes a conduit having a central axis extending along an inlet direction at the inlet end and along an outlet direction at the outlet end, the inlet and outlet directions being non-parallel. The outlet end has a smaller cross-sectional area than that of the suction duct. The insert includes an inlet in fluid communication with the inlet end of the conduit. The outer portion includes a curved lip surrounding at least part of an inlet opening of the inlet, the lip configured to direct a flow into the inlet opening and toward the inlet end of the conduit.

An aspirator assembly for inflating an emergency slide is disclosed. The aspirator assembly includes a bell housing, a mixing chamber, and a nozzle assembly. The bell housing includes a ring defining an inlet port at which a check valve is located and into which ambient air can flow. The mixing chamber has an outlet port, The nozzle assembly is located in the mixing chamber and includes plural passageway sections defining concentric rings and cross bars. The passageway sections include internal passageways in communication with plural nozzle jets through which a compressed air is introduced into the mixing chamber to mix with the ambient air. The passageway sections are of an airfoil shape cross-section having a rounded leading end directed towards the inlet port and a trailing end is directed toward the outlet port to reduce air turbulence within the mixing chamber.

An aspirator may comprise an aspirator body defining an air channel. An aspirator barrel may have a first aspirator barrel segment coupled to the aspirator body and may have a second aspirator barrel segment. The second aspirator barrel segment configured to fit at least partially within the first aspirator barrel segment when the aspirator barrel is in a stowed state and configured to interlock with the first aspirator barrel segment in an extended position when the aspirator barrel is in a deployed state.

An aspirator assembly for inflating an emergency slide. The aspirator assembly includes a bell housing, a mixing chamber, and a nozzle assembly. The bell housing includes a ring defining an inlet port at which a check valve is located and into which ambient air can flow. The mixing chamber has an outlet port, The nozzle assembly is located in the mixing chamber and includes plural passageway sections defining concentric rings and cross bars. The passageway sections include internal passageways in communication with plural nozzle jets through which a compressed air is introduced into the mixing chamber to mix with the ambient air. The passageway sections are of an airfoil shape cross-section having a rounded leading end directed towards the inlet port and a trailing end is directed toward the outlet port to reduce air turbulence within the mixing chamber.

The present invention relates to a nozzle appliance for a jet pump, comprising a driving nozzle and a first suction nozzle, wherein the first suction nozzle is arranged radially outward of the driving nozzle and wherein the nozzle appliance is designed such that a fluid flow through the driving nozzle drives a fluid flow through the first suction nozzle. The invention also relates to a jet pump comprising a corresponding nozzle appliance.

A jet pump for a system for supplying fluid to a turbomachine. The jet pump includes an active fluid inlet pipe including a tube delimiting the inlet pipe, and a passive fluid inlet pipe that is fluidically separated from the active fluid inlet pipe by the tube. The active fluid inlet pipe includes at least one twisted blade that is positioned within the tube and is configured to make the active fluid rotate with respect to the axis of the tube.

The invention relates to an ejector nozzle having a liquid-carrying duct and a gas-carrying duct. The gas-carrying duct opens into the liquid-carrying duct upstream of an outlet opening. The insert acting as a flame arrester is positioned in the gas-carrying duct. The insert is configured in such a way that no gas can flow around the insert. The invention furthermore relates to use of the ejector nozzle in a jet loop reactor.

An eductor for an auxiliary power unit with a gas turbine engine and a load compressor incorporates an eductor housing having an cooling airflow inlet and a turbine exhaust inlet opening fluidly connected through a primary plenum to an outlet opening. A splitter plate is positioned in the primary plenum fixing a flow stagnation point with respect to a wall of the primary plenum.

An example injector includes a first conduit defining a first flow path including a first choke for a first fluid and a second conduit defining a second flow path including a second choke for a second fluid. The second choke is defined by a converging region upstream and a diverging region downstream of the second choke. The example injector further includes a mixing region after both the diverging region of the second flow path and the first choke and configured to receive the first fluid the second fluid, and an outlet configured to allow the first fluid and the second fluid to exit the mixing region. The first and second chokes are configured to allow a constant mass flow of the first and second fluids, respectively, to flow into the mixing region independent of a pressure at the outlet.

An ejector device (1), e.g., for pumping a gas using a liquid motive fluid, has an injector portion (100), and a diffuser portion (50), the injector portion (100) being arranged for injecting a flow of motive fluid from a motive fluid inlet (10) into an inlet section (52) of the diffuser portion (50) thereby to draw a suction fluid from a suction fluid inlet (20) into the inlet section (52) of the diffuser portion (50). The injector portion (100) includes a flow-modifying arrangement with at least one rotational deflector element (104), e.g., three vanes (104V1, 104V2, 104V3) each at a desired twist angle, constructed and arranged to deflect motive fluid into a helical path as it moves over or through the rotational deflector element (104), and at least one baffle element (103), e.g., a baffle plate (103), downstream of the rotational deflector element (104).