A propulsion system for an aircraft includes a battery, an electrical distribution system, a charger, and a battery management system. The battery includes a plurality of battery strings including a first battery string. Each of the plurality of battery strings includes a plurality of battery…

A method of operation is provided during which a pre-charge switch is closed to electrically couple a power supply to a motor controller through a pre-charge supply circuit, where a main switch is open. An electrical parameter of electricity directed through the pre-charge supply circuit is…

An electric assembly for an aircraft is provided that includes a battery string, a switch, a battery charging system, and a charge monitoring device. The battery string includes a plurality of battery modules and a contactor. The plurality of battery modules are electrically connected in series…

A propulsion system includes a battery, a plurality of temperature sensors, and a controller. The battery includes a plurality of battery cells. Each temperature sensor of the plurality of temperature sensors is disposed at a respective battery cell of the plurality of battery cells. The controller…

A propulsion system includes a battery, a plurality of temperature sensors, and a controller. The battery includes a plurality of battery cells. The plurality of temperature sensors includes a plurality of first temperature sensors and at least one second temperature sensor. Each temperature sensor…

An apparatus is provided for an engine. This apparatus includes a fuel nozzle extending axially along an axis to a distal end of the fuel nozzle. The fuel nozzle includes a plurality of fuel passages arranged circumferentially around the axis. The fuel passages includes a first fuel passage and a…

A multicore hybrid-electric powertrain controller includes an electric motor control unit and a thermal engine control unit. The electric motor control unit and the thermal engine control unit can be connected by one or more serial connections and an analog/discrete connection. Each of the electric…

A fluid system is provided for a powerplant. This fluid system includes a gear rotor and a deaerator impeller rotor. The gear rotor is rotatable about an axis. The gear rotor includes a web, a toothed rim and a plurality of liquid ports. The web projects radially inward towards the axis from the…

A hydrogen supply assembly for an aircraft propulsion system includes a storage housing, a hydrogen supply component, and a leak detection system. The storage housing surrounds and forms a storage plenum. The hydrogen supply component is disposed within the storage housing coincident with the…

A hybrid-electric propulsion system is provided that includes a thermal engine, an electric motor, a battery, a battery management unit (BMU), an electrical distribution bus, an artificial intelligence (AI) model, and a monitoring system (MS) controller. The electrical distribution bus electrically…

A propulsion system for an aircraft includes a propulsor, an engine, and an electrical distribution system. The engine includes a first rotor and a first shaft. The first shaft is connected to the first rotor. The electrical distribution system includes a low-voltage bus, a high-voltage bus, a…

An assembly for an aircraft includes an aircraft electrical distribution bus, a battery, and a control system. The battery includes a plurality of battery strings. Each battery string includes a string contactor. The control system is in signal communication with the string contactor of each…