Safety markers for a hydrogen fuel system
Granted: July 16, 2024
Patent Number:
12037128
A hydrogen fuel including a safety marker and a method and apparatus for adding the safety marker to the hydrogen fuel. The hydrogen fuel may be stored in a tank in a liquid phase and then heated to at least one of a gaseous phase and a supercritical phase. The safety marker may be added to the hydrogen fuel when the hydrogen fuel is in the at least one of the gaseous phase and the supercritical phase after heating the hydrogen fuel. The hydrogen fuel may be delivered in the at least one…
Systems and method of operating a fuel cell assembly
Granted: July 16, 2024
Patent Number:
12037124
A method for operating a propulsion system for an aircraft, the propulsion system including a gas turbine engine and a fuel cell assembly, the fuel cell assembly comprising a fuel cell stack having a fuel cell defining an outlet positioned to remove output products from the fuel cell during operation, the method including: executing a startup sequence for the gas turbine engine, wherein executing the startup sequence comprises initiating the startup sequence for the gas turbine engine;…
Gas turbine engine cooling system control
Granted: July 9, 2024
Patent Number:
12031484
A method is provided for operating a gas turbine engine. The method includes: determining data indicative of an operation of a cooling system of the gas turbine engine during a shutdown of the gas turbine engine, following the shutdown of the gas turbine engine, or both; and modifying a startup schedule of the gas turbine engine in response to the determined data indicative of the operation of the cooling system of the gas turbine engine.
Power source for an aircraft
Granted: July 9, 2024
Patent Number:
12034298
An aircraft electrical system including: a first DC power bus and a fuel cell assembly including a first fuel cell group, wherein the first fuel cell group is electrically coupled directly to the first DC power bus without a voltage converter to provide a first power output to the first DC power bus.
Circuit breaker with simplified non-linear double motion
Granted: July 9, 2024
Patent Number:
12033817
The invention concerns a double-motion circuit breaker comprising primary and secondary movable contacts slidingly mounted within primary and secondary holders, wherein the primary movable contact comprises a tulip and a contact cylinder attached thereto, and the secondary movable contact comprises a pin for engaging the tulip but no counter-contact for engaging the contact cylinder. The circuit breaker also has a non-linear linkage mechanism with a pin and slot mechanism, and a fixed…
Turbine engine combustor having a combustion chamber heat shield
Granted: July 9, 2024
Patent Number:
12031724
A turbine engine that includes a compressor section, combustion section, and turbine section. The combustion section includes a combustor liner defining a combustion chamber. At least one fuel nozzle and at least one heat shield are located in the combustion chamber. The at least one heat shield includes an internal air flow passage and a pin bank.
Motorized apparatus for pipe inspection and repair
Granted: July 9, 2024
Patent Number:
12031660
A system for use in maintaining a pipe includes a motorized apparatus including a body assembly and at least one maintenance device. The at least one maintenance device includes a sprayer, a heater, and an infrared sensor. The system includes at least one controller configured to apply the at least one coating material to the interior surface of the pipe at a work location using the sprayer, heat the interior surface of the pipe at the work location using the heater to begin a cure of…
Gas turbine engine with third stream
Granted: July 9, 2024
Patent Number:
12031504
A gas turbine engine is provided. The gas turbine engine includes a turbomachine defining an engine inlet to an inlet duct, a fan duct inlet to a fan duct, and a core inlet to a core duct; a primary fan driven by the turbomachine; and a secondary fan located downstream of the primary fan within the inlet duct. The gas turbine engine defines a thrust to power airflow ratio between 3.5 and 100 and a core bypass ratio between 0.1 and 10, wherein the thrust to power airflow ratio is a ratio…
Cooling system for an engine assembly
Granted: July 9, 2024
Patent Number:
12031501
A cooling system includes a conduit extending from an upstream end to a downstream end and retains a gas. A heat exchanger is fluidly coupled with and disposed within a surface of the conduit. A portion of the gas is directed into the heat exchanger via one or more passages extending between the conduit and the heat exchanger, and a portion of the gas is directed out of the heat exchanger via the one or more passages. The heat exchanger directs cooling fluid in one or more directions…
Combustor with lean openings
Granted: July 9, 2024
Patent Number:
12031486
A turbine engine and method of operation with a combustor as shown and described. The turbine engine including a combustor comprising an annular array of rich cups and an annular array of lean cups. A method for controlling nitrogen oxides including injecting a fuel/air mixture from the lean cups and the rich cups.
Hybrid electric propulsion system load share
Granted: July 9, 2024
Patent Number:
12031479
A method is provided for operating a hybrid-electric propulsion system having a first engine, a second engine, a first electric machine coupled to the first engine, and a second electric machine coupled to one of the first engine or the second engine. The method includes: receiving data indicative of a first engine operating parameter, a second engine operating parameter, or both; determining a first engine operating parameter margin, a second parameter operating margin, or both;…
Component with spar assembly for a turbine engine
Granted: July 9, 2024
Patent Number:
12031453
A component and blade assembly for a turbine engine, the component having a wall bounding an interior and defining an exterior surface extending radially between a leading edge and a trailing edge to define a chordwise direction, and between a hub and a tip to define a spanwise direction. A metallic spar extending from the hub in the spanwise direction into the interior, the metallic spar defining a socket. A composite spar extending in the spanwise direction between a spar root and a…
Turbine engine servicing tool and method for using thereof
Granted: July 9, 2024
Patent Number:
12031446
A servicing tool for a turbine engine and a method for using thereof are provided. A method includes inserting the tool into an access opening of the turbine engine, contacting a blade of the turbine engine, and removing material from the blade. The tool may comprise a wiper mount and a wiper, including a wiper surface, configured to contact and remove material from the blades. The tool may further comprise a body, an actuator, and fluid flowpaths for deploying the wiper and providing…
Turbine engine with a floating interstage seal
Granted: July 9, 2024
Patent Number:
12031442
A turbine engine comprising an engine core, a plurality of circumferentially arranged vanes, and a floating seal. The plurality of circumferentially arranged vanes forming an upper band and a lower band. The floating seal being carried by at least one respective vane of the plurality of circumferentially arranged vanes. The floating seal having a ring and at least one dynamic seal.
Aircraft with a fuselage accommodating an unducted turbine engine
Granted: July 9, 2024
Patent Number:
12030652
An aircraft comprising a fuselage and an unducted turbine engine. The fuselage having a divot with an upstream edge and a downstream edge. The divot is defined by a straight reference line having a length (L) and a maximum depth (h) relative to the straight reference line. The unducted turbine engine having an engine core, a nacelle, and a set of blades. A first flow ratio (FR1) is equal to: h L .
Irradiation devices with optical modulators for additively manufacturing three-dimensional objects
Granted: July 9, 2024
Patent Number:
12030251
An irradiation device for additively manufacturing three-dimensional objects may include a beam generation device configured to generate an energy beam, an optical modulator including a micromirror array disposed downstream from the beam generation device, and a focusing lens assembly disposed downstream from the optical modulator. The micromirror array may include a plurality of micromirror elements configured to reflect a corresponding plurality of beam segment of the energy beam along…
Methods and systems for vacuum powder placement in additive manufacturing systems
Granted: July 2, 2024
Patent Number:
12023859
A method for fabricating a component of with an additive manufacturing system include entraining a first portion of first material particles in an airflow generated by a vacuum source and engaging the first portion of the first material particles against an air permeable screen. The first portion of the first material particles is deposited onto a build platform. The method also includes entraining a second portion of second material particles in the airflow and engaging the second…
Actuation assembly for a fan of a gas turbine engine
Granted: July 2, 2024
Patent Number:
12025031
A fan assembly is provided for a gas turbine engine including: a plurality of fan blades, the plurality of fan blades including a first fan blade; and an actuation assembly including: a first linkage connected to the first fan blade; a first pivot point rotatable with the first fan blade, the first linkage further connected to the first pivot point; a control point moveable relative to the first pivot point and connected to the first linkage for changing a relative position of the first…
Blade tip clearance control using material with negative thermal expansion coefficients
Granted: July 2, 2024
Patent Number:
12025011
Clearance control systems with thermal actuators are disclosed. An example thermally-actuated clearance control system for a gas turbine engine includes a compliant material; a high-conductive material coupled to a first surface of the compliant material, the high-conductive material thermally coupling the compliant material to a heated substance, the compliant material to expand radially-inward toward a fan blade when the high-conductive material provides heat; and an abradable material…
Adhesion of a substrate onto a CMC component
Granted: July 2, 2024
Patent Number:
12023904
Methods for adhering a substrate onto a surface of a ceramic component are provided. The method may include applying a first bond coating onto an attachment surface of the substrate, applying a first alumina coating onto the first bond coating on the attachment surface of the substrate, applying a second bond coating onto an outer surface of the ceramic component, applying a second alumina coating onto the second bond coating on the attachment surface of the substrate, applying a cement…
