Air-to-air heat exchanger potential in gas turbine engines
Granted: August 27, 2024
Patent Number:
12071896
A gas turbine engine is provided. The gas turbine engine includes a compressor section, a combustion section, and a turbine section in a serial flow arrangement; and an air-to-air heat exchanger having an air-to-air heat exchanger potential defined by a product raised to a half power, the product being an effectiveness associated with the air-to-air heat exchanger multiplied by an airflow conductance factor associated with the gas turbine engine, and wherein the air-to-air heat exchanger…
Systems and methods for controlling wind converters
Granted: August 27, 2024
Patent Number:
12074530
A method of operating a wind converter is provided. The method includes receiving a plurality of forecasted datasets. The forecasted datasets include event signals for the wind converter during fast transient operating conditions (OCs) and operational data for the wind converter having a low sampling rate. The method further includes estimating a converter life consumption during normal OCs and a converter life consumption during the fast transient OCs. Further, the method includes…
Electrical machines and methods to mitigate bearing currents
Granted: August 27, 2024
Patent Number:
12074482
The present disclosure relates to electrical machines (100, 200) configured to be fed by pulse width modulation from a power converter (170) and comprising a stator (110), a rotor (120), a rotor shaft (130) and one or more bearings (140, 141) arranged between the rotor (120) and the stator (110). The electrical machine (100, 200) further comprising an electrical shunt (160, 161) arranged between the rotor shaft (130) and the stator (110). The present disclosure also relates to methods…
Solid oxide fuel cell assembly
Granted: August 27, 2024
Patent Number:
12074350
A propulsion system for an aircraft, the aircraft including an aircraft fuel supply, the propulsion system including: a turbomachine including a compressor section, a combustion section, and a turbine section arranged in serial flow order, the combustion section configured to receive a flow of aviation fuel from the aircraft fuel supply; and a fuel cell assembly including a fuel cell stack having a solid oxide fuel cell, the solid oxide fuel cell defining an outlet positioned to remove…
Turbine engine fuel premixer
Granted: August 27, 2024
Patent Number:
12072103
A turbine engine can include a compressor section, a combustion section, and a turbine section in serial flow arrangement. The combustion section can include a combustor with a fuel premixer. The fuel premixer can include an annular shroud defining an interior, a center body located within the interior, and an annular swirler located within the interior.
Combustor for a gas turbine engine
Granted: August 27, 2024
Patent Number:
12072100
A combustor for an aircraft gas turbine engine includes a dome structure, a swirler assembly connected to the dome structure, and a cowl connected to the dome structure and defining a plenum between the dome structure and the cowl, and surrounding the swirler assembly. The cowl includes an airflow opening through an upstream wall portion of the cowl for providing a flow of compressed air into the plenum. In addition, the cowl includes a cowl steam channel therewithin and a plurality of…
Gas turbine fuel nozzle having a lip extending from the vanes of a swirler
Granted: August 27, 2024
Patent Number:
12072099
An engine can utilize a combustor to combust fuel to drive the engine. A fuel nozzle assembly can supply fuel to the combustor for combustion or ignition of the fuel. The fuel nozzle assembly can include a swirler and a fuel nozzle to supply a mixture of fuel and air for combustion. Increasing efficiency and meeting emission needs can be met with the use of alternative fuels, which combust at higher temperatures or higher speeds than traditional fuels, requiring improved fuel…
Midshaft rating for turbomachine engines
Granted: August 27, 2024
Patent Number:
12071978
A turbomachine engine including an engine core including a high-pressure compressor, which has an exit stage having an exit stage diameter (DCORE), a high-pressure turbine, and a combustion chamber in flow communication with the high-pressure compressor and the high-pressure turbine, a power turbine in flow communication with the high-pressure turbine, and a low-pressure shaft coupled to the power turbine and characterized by a midshaft rating (MSR) between two hundred (ft/sec)1/2 and…
Devices and methods for mitigating vibrations in wind turbines
Granted: August 27, 2024
Patent Number:
12071924
The present disclosure relates to devices (300) for wind turbine blades (22) and methods for reducing vibrations in wind turbines (10). More particularly, the present disclosure relates to devices (300) for mitigating vortex induced vibrations and stall induced vibrations, wind turbine blades (22) comprising such devices (300), and methods for reducing wind turbine vibrations when the wind turbine (10) is parked, especially during wind turbine installation and/or maintenance. A device…
Gas turbine fluid manifold assembly having an adjustable length bypass conduit to attenuate dynamics
Granted: August 27, 2024
Patent Number:
12071897
A structure for damping at a fluid manifold assembly for an engine is generally provided. The fluid manifold assembly includes a first walled conduit defining a first fluid passage therewithin. A flow of fluid defining a first frequency is permitted through the first fluid passage. A second walled conduit includes a pair of first portions each coupled to the first walled conduit. A second portion is coupled to the pair of first portions. A second fluid passage is defined through the…
Counter-rotating turbine
Granted: August 27, 2024
Patent Number:
12071889
A turbine section and an exhaust section for a gas turbine engine includes a low pressure (LP) turbine having first stage LP turbine blades that rotate in a first direction at a first speed, and final stage LP turbine blades downstream of the first stage LP turbine blades that rotate in a second direction opposite the first direction at a second speed. The second speed is lower than the first speed.
Fire retardant engine casing apparatus
Granted: August 27, 2024
Patent Number:
12071858
Fire retardant engine casing apparatus are disclosed. An example engine casing includes an inner shell circumferentially surrounding blades of a fan, a compressor, or a turbine, an outer shell positioned around the inner shell, and a fire retardant material between the inner shell and the outer shell.
Clamping of components, particularly wind turbine blade tips
Granted: August 27, 2024
Patent Number:
12070840
The disclosure relates to methods and tools for handling a component, the tools (10) comprising a first clamp seat (12) for receiving a first surface of the component and a second clamp seat (14, 16) for receiving a second surface of the component, the second surface being opposite to the first surface. The tool further comprises an actuator (45) for moving the first clamp seat to clamp the component between the first clamp seat and the second clamp seat with a predetermined clamping…
Dip-coat binder solutions comprising a dip-coat metallic precursor for use in additive manufacturing
Granted: August 20, 2024
Patent Number:
12064810
A dip-coat binder solution comprises a dip-coat metallic precursor and a dip-coat binder. The dip-coat binder solution has a viscosity greater than or equal to 1 cP and less than or equal to 150 cP. A method of forming a part includes providing a green body part comprising a plurality of layers of print powder and a print binder, dipping the green body part in a dip-coat binder solution, and heating the dip-coated green body part. The dip-coated green body part is heated to form a coated…
Plank hanger structure for durable combustor liner
Granted: August 20, 2024
Patent Number:
12066187
A combustor includes a skeleton mesh structure having a plurality of structural elements configured to mesh together to form the skeleton mesh structure. The combustor also includes an inner liner and an outer liner mounted to the skeleton mesh structure to define a combustion chamber. The inner liner includes a plurality of inner planks mounted to an inner side of the inner liner and a plurality of outer planks mounted to an outer side of the inner liner. The outer liner includes a…
Gas turbine engine with third stream
Granted: August 20, 2024
Patent Number:
12065989
A gas turbine is provided, the gas turbine engine including a turbomachine having an inlet splitter defining in part an inlet to a working gas flowpath and a fan duct splitter defining in part an inlet to a fan duct flowpath. The gas turbine engine also includes a primary fan driven by the turbomachine defining a primary fan tip radius R1, a primary fan hub radius R2, and a primary fan specific thrust rating TP; and a secondary fan downstream of the primary fan and driven by the…
Inner shroud damper for vibration reduction
Granted: August 20, 2024
Patent Number:
12065947
Methods, apparatus, systems and articles of manufacture are disclosed. An inner shroud damper for a gas turbine engine includes: at least one carrier including a joint to couple to an inner shroud, the at least one carrier having a first side and a second side, and at least one mass damper coupled to the at least one carrier.
Morphable rotor blades and turbine engine systems including the same
Granted: August 20, 2024
Patent Number:
12065943
Morphable rotor blades for a turbine engine systems include a root portion and an airfoil portion having a morphable portion including a morphable material that changes shape in response to a stimulus.
Midshaft rating for turbomachine engines
Granted: August 20, 2024
Patent Number:
12065254
A turbomachine engine including a high-pressure compressor, a high-pressure turbine, a combustion chamber in flow communication with the high-pressure compressor and the high-pressure turbine, and a power turbine in flow communication with the high-pressure turbine. At least one of the high-pressure compressor, the high-pressure turbine, and the power turbine comprises a ceramic matrix composite (CMC) material. The turbomachine engine includes a low-pressure shaft coupled to the power…
Propeller control system for an aircraft
Granted: August 20, 2024
Patent Number:
12065234
Propeller control systems and methods for controlling the pitch of a plurality of propeller blades of a variable pitch propeller assembly operatively coupled with an engine is provided. In one exemplary aspect, the propeller control system includes features for combining overspeed and feathering protective functions in a protective control valve communicatively coupled with a controller. In such an event the controller controls the protective control valve to selectively allow a…
