Fabrication method for a component having magnetic and non-magnetic dual phases
Granted: March 12, 2024
Patent Number:
11926880
Methods for forming a dual-phase magnetic component from an initial component comprising a non-magnetic austenite composition are provided. The method may include: forming a coating on a portion of the surface of the initial component to form a masked area while leaving an unmasked area thereon. Thereafter the initial component may be heated to a treatment temperature such that nitrogen diffuses out of the unmasked area of the initial component to transform the non-magnetic austenite…
Apparatus for monitoring a condition of an electrical power transmission medium
Granted: March 12, 2024
Patent Number:
11927617
There is provided an apparatus (20) for monitoring a condition of an electrical power transmission medium (22), the apparatus (20) comprising: a signal source (24) for transmitting a signal (30) to travel along the electrical power transmission medium (22); and a monitoring device (26) configured to detect one or more reflected signals (34) in the electrical power transmission medium (22), wherein the monitoring device (24) is configured to use the or each detected reflected signal (34)…
Heat exchange system
Granted: March 12, 2024
Patent Number:
11927401
A heat exchange system for a gas turbine engine includes a first heat exchanger that defines a first heat source flowpath, a second heat exchanger that defines a second heat source flowpath, and a coolant fluid circuit. The coolant fluid circuit defines a first coolant flowpath that extends through the first heat exchanger and is in thermal communication with the first heat source flowpath, and a second coolant flowpath that extends through the second heat exchanger and is in thermal…
Combustor deflector assembly
Granted: March 12, 2024
Patent Number:
11927349
A deflector assembly for a combustor defining an operational fluid flow. The deflector assembly includes an upstream surface and a downstream surface opposite the upstream surface. One or more fastening mechanisms each extends through the deflector assembly. One or more cooling holes extend through the deflector assembly from the upstream surface to the downstream surface. The one or more cooling holes are located about the one or more fastening mechanisms to operably direct cooling air…
System and method for warmkeeping sub-critical steam generator
Granted: March 12, 2024
Patent Number:
11927344
A system and method for warmkeeping a steam generator such as a sub-critical steam generator is disclosed. Water extraction piping extracts water from a component of one of the water fill circuits of the sub-critical steam generator. A deaerator heating system having an inventory tank of water mixes the extracted water with the water in the tank, and heats the mix of water to a predetermined temperature level to generate heated deaerated feedwater. Feedwater piping forwards the heated…
Systems and methods for controlling fuel coke formation
Granted: March 12, 2024
Patent Number:
11927142
Systems and methods are disclosed for estimating or determining a rate or an amount of fuel coke formation in a fuel system, such as of a gas turbine engine. The system is operable to control a rate of fuel coke formation. The system may include a sensor that measures an operating parameter associated with fuel coke formation in the fuel system. A controller is in communication with the sensor to receive the signal therefrom for determining an amount or a rate of fuel coking in the fuel…
Gas turbine engine having a heat exchanger located in an annular duct
Granted: March 12, 2024
Patent Number:
11927134
A gas turbine engine is provided, having a turbomachine and a rotor assembly driven by the turbomachine and operable at a first blade passing frequency (f1) greater than or equal to 2,500 hertz and less than or equal to 5,000 hertz during a high power operating condition; a heat exchanger positioned within an annular duct and extending substantially continuously along the circumferential direction, wherein an effective transmission loss (ETL) for the heat exchanger positioned within the…
Turbine engine with a blade
Granted: March 12, 2024
Patent Number:
11927111
A blade for a turbine engine with a wall separating a cooling fluid flow and a hot gas fluid flow and having a heated surface along which the hot gas fluid flow flows and a cooled surface facing the cooling fluid flow. A plurality of cooling holes each having a passage extending between an inlet at the cooled surface and an outlet at the heated surface. The outlet extending between an upstream end and a downstream end with respect to the hot gas fluid flow to define a distance, the…
Component for a turbine engine with a cooling hole
Granted: March 12, 2024
Patent Number:
11927110
An apparatus and method relating to a cooling hole of a component of a turbine engine. The cooling hole can extend from an inlet to an outlet to define a connecting passage. The cooling hole can contain a diffusing section. The diffusing section can be defined by an interior surface having variable geometries.
Turbine engine and method of cooling
Granted: March 12, 2024
Patent Number:
11927103
A method of mitigating thermal rotor bow in a rotor assembly of a turbine engine may include performing a plurality of motoring cycles. The plurality of motoring cycles may include receiving feedback on a temperature within a turbine engine in a post-shutdown state, actuating a starter motor when the temperature is greater than a predetermined threshold, operating the starter motor for a motoring time to exhaust some residual heat from the turbine engine, and shutting down the starter…
Additively manufactured component having surface features for part identification
Granted: March 12, 2024
Patent Number:
11926106
An additively manufactured component and a method for manufacturing the same are provided. The additively manufactured component includes a cross sectional layer having a surface surrounding the cross sectional layer. The cross sectional layer is formed by moving a focal point of an energy source over a bed of additive material. A surface irregularity is formed on the surface by manipulating the energy level of the energy source. The surface may include a datum feature positioned at a…
System and method for machining a slot in an inner surface of a casing for a gas turbine engine
Granted: March 12, 2024
Patent Number:
11925991
A milling device for machining a slot into an inner surface of a casing for a gas turbine engine. The milling device includes a frame assembly including multiple structural guides configured to engage structural features on the inner surface of the casing to maintain an axial position of the milling device relative to a longitudinal axis of the casing. The milling device also includes a milling cutter coupled to the frame assembly. The milling device is configured to be displaced in a…
Method of edge printing for use in additive manufacturing processes
Granted: March 5, 2024
Patent Number:
11919233
Various embodiments provide a method of additively manufacturing a part including depositing a layer of a powder on a working surface, depositing a binder solution on the layer of the powder at first locations, and depositing a sintering aid solution on the layer of the powder at second locations. The sintering aid solution comprises a sintering aid in a solvent. In various embodiments, the sintering aid enables an increased brown strength as compared to parts containing unbound powder.…
Magnetizing permanent magnets
Granted: March 5, 2024
Patent Number:
11923117
A method for magnetizing a section of one or more permanent magnets arranged substantially in a V-shape, comprising: applying a first magnetic field such that magnetic flux lines are substantially perpendicular to a first leg of the V-shape, and removing the first magnetic field. Then the method comprises applying a second magnetic field such that magnetic flux lines are substantially perpendicular to a second leg of the V-shape, and removing the second magnetic field. Systems and…
Lubrication system for components in an engine starter
Granted: March 5, 2024
Patent Number:
11920672
An air turbine starter that includes a housing with a divider structure dividing the housing into a wet chamber and an air chamber. The air turbine starter further including a bearing assembly, a turbine member, a first drive shaft, and a second drive shaft connecting the turbine member with a rotating assembly. A lubricant supply portion having at least one supply inlet fluidly coupled to the wet chamber and at least one supply outlet fluidly coupled to the bearing assembly whereby…
Gas turbine exhaust nozzle noise abatement
Granted: March 5, 2024
Patent Number:
11920539
An exhaust nozzle for a gas turbine engine. The exhaust nozzle comprises a nozzle body having an upstream end axially spaced from a downstream end with respect to an axial centerline of the nozzle body, and a plurality of chevrons circumferentially spaced apart and extending downstream from the downstream end. Each chevron includes an inner wall radially spaced from an outer wall, a root and a tip axially spaced from the root. At least one chevron of the plurality of chevrons includes a…
Turboshaft load control using feedforward and feedback control
Granted: March 5, 2024
Patent Number:
11920521
Control schemes for controlling a gas turbine engine in response to disturbances associated with a load mechanically coupled with the gas turbine engine are provided. In one aspect, a gas turbine engine mechanically coupled with a load has a controller that includes executable control logic. The control logic includes a feedforward module, an aggressive control module, and a power turbine governor module. By executing the modules, the controller seeks to maintain a constant power turbine…
Passive flow modulation device
Granted: March 5, 2024
Patent Number:
11920500
A passive flow modulation device for a machine defining an axial direction and a radial direction, the passive flow modulation device including: a first ring with a first coefficient of thermal expansion; a second ring disposed coaxially with the first ring and positioned at least partially inward of the first ring along the radial direction, spaced from the first ring along the axial direction, or both, the first ring, the second ring, or both defining at least in part one or more…
Turbine circumferential dovetail leakage reduction
Granted: March 5, 2024
Patent Number:
11920498
Methods, apparatus, systems and articles of manufacture are disclosed. An example apparatus includes a compressor comprising a rotor defining a radial direction and a circumferential direction, the rotor including a slot; a first blade and a second blade disposed in the slot, the first blade including a first platform and a first dovetail, the second blade including a second platform and a second dovetail; and a hollow block disposed circumferentially between the first blade and the…
Processing of iron cobalt lamination material for hybrid turbo-electric components
Granted: March 5, 2024
Patent Number:
11920230
Methods for processing an iron cobalt alloy, along with components formed therefrom, are provided. The method may include: pre-annealing a sheet of an iron cobalt alloy at a pre-anneal temperature (e.g., about 770° C. to about 805° C.); thereafter, cutting a component from the sheet; thereafter, heat-treat annealing the component at a treatment temperature (e.g., about 845° C. to about 870° C.) for a treatment period (e.g., about 1 minute to about 10 minutes); and thereafter,…
