Abstract: A system for detecting a fault in electric power conversion equipment having an input stage and an output stage includes an output voltage sensor positioned within the output stage and configured to generate an output voltage signal; an input current sensor positioned at the input stage and configured to generate an input current signal; and a processor configured to analyze the output voltage signal and the input current signal to determine an occurrence of the fault in the electric power conversion equipment.

Abstract: A system for detecting a fault in electric power conversion equipment having an input stage and an output stage includes an output voltage sensor positioned within the output stage and configured to generate an output voltage signal; an input current sensor positioned at the input stage and configured to generate an input current signal; and a processor configured to analyze the output voltage signal and the input current signal to determine an occurrence of the fault in the electric power conversion equipment.

Abstract: A method may comprise: receiving, via a controller and through a camera, visual data corresponding to a row of latch assemblies in a cargo handling system; and determining, via the controller, whether each latch assembly in the row of latch assemblies is in a properly securing state.

Abstract: A latch assembly may comprise: a housing; a pawl assembly coupled to the housing, the pawl assembly configured to transition from an un-restrained state to an restrained state; and a latch state detection system comprising a transducer and a communications module, the transducer configured to convert mechanical energy from the pawl assembly reaching the restrained state to an electrical energy configured to power the communications module.

Abstract: A quick-connect fitting for a convertible cargo handling assembly may comprise a fixed portion and a coupling component. The fixed portion may be secured to an aircraft frame structure. The coupling component may be coupled to a removable cargo handling component. The coupling component may be configured to rotate relative to the fixed portion.

Abstract: A cargo handling system is disclosed. A method for storing and restraining cargo is disclosed. The method includes positioning a unit load device at a parked location on a conveyance surface and in contact with a drive roller, deploying a restraint to engage the unit load device, and verifying engagement of the restraint with the unit load device by activating the drive roller and detecting movement of the unit load device with respect to the conveyance surface.

Abstract: A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a power drive unit having a drive roller configured to impart movement to a unit load device; a first restraint; and a first sensor configured to detect movement of the unit load device with respect to a parked location following deployment of the first restraint and activation of the drive roller.

Abstract: A cargo handling system includes a conveyance surface; a first power drive unit having a first drive roller; a first restraint device; one or more sensors configured to provide positional data corresponding to a current location of a unit load device on the conveyance surface; and a first power drive unit agent configured for communication with the one or more sensors, the first power drive unit agent configured to selectively activate and deactivate the first drive roller and the first restraint device based on the positional data.

Abstract: A cargo handling system includes a conveyance surface; a first power drive unit having a first drive roller; a first restraint device; one or more sensors configured to provide positional data corresponding to a current location of a unit load device on the conveyance surface; a first power drive unit controller configured for communication with the one or more sensors, the first power drive unit configured to selectively activate and deactivate the first drive roller and the first restraint device based on the positional data and a second power drive unit and a second power drive unit controller configured for communication with the sensor, the second power drive unit controller configured to selectively activate and deactivate a second drive roller based on the positional data.

Abstract: A PDU for use in an aircraft includes a wheel configured to convey cargo through a portion of the aircraft. The PDU further includes an armature rotatably coupled to the wheel. The PDU further includes a brake pad. The PDU further includes a hold solenoid configured to compress the armature against the brake pad by a brake amount in order to apply a hold braking force to the wheel by resisting rotation of the armature. The PDU further includes a release solenoid configured to apply a force to separate the armature from the brake pad in order to allow the armature to rotate. The PDU further includes a magnet configured to compress the armature against the brake pad by a drag amount that is less than the brake amount in order to apply a drag braking force to the wheel by resisting rotation of the armature.

Abstract: A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a conveyance surface having a tray defining an interior section and a rail section; a power drive unit disposed within the interior section; and a power bus routed along a length of the rail section and configured to supply power to the power drive unit.

Abstract: A system for estimating mass of a ULD while on-board a vessel includes a system controller energizing one or more PDUs in communication with a conveyance surface of the vessel, the PDUs applying first and second forces to the ULD and transmitting first and second force parameters to a system integrator, one or more sensors measuring first and second accelerations of the ULD when the ULD moves into one or more sensing zones as a result of the forces and transmits first and second acceleration parameters to the system integrator, and the system integrator, which receives the first and second force parameters, and the first and second acceleration parameters, and calculates the mass of the ULD while the ULD is on-board the vessel by performing regression analysis on ordered pairs including the first force parameter and the first acceleration parameter, and the second force parameter and the second acceleration parameter.

Abstract: A quick-connect fitting for a convertible cargo handling assembly may comprise a fixed portion and a coupling component. The fixed portion may be secured to an aircraft frame structure. The coupling component may be coupled to a removable cargo handling component. The coupling component may be configured to rotate relative to the fixed portion.

Abstract: A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a conveyance surface; a first power drive unit having a first drive roller; a first restraint device; one or more sensors configured to provide positional data corresponding to a current location of a unit load device on the conveyance surface; and a first power drive unit agent configured for communication with the one or more sensors, the first power drive unit agent configured to selectively activate and deactivate the first drive roller and the first restraint device based on the positional data.

Abstract: A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a conveyance surface having a tray defining an interior section and a rail section; a power drive unit disposed within the interior section; and a power bus routed along a length of the rail section and configured to supply power to the power drive unit.

Abstract: A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a power drive unit having a drive roller configured to impart movement to a unit load device; a first restraint; and a first sensor configured to detect movement of the unit load device with respect to a parked location following deployment of the first restraint and activation of the drive roller.

Abstract: A system for estimating mass of a ULD while on-board a vessel includes a system controller energizing one or more PDUs in communication with a conveyance surface of the vessel, the PDUs applying first and second forces to the ULD and transmitting first and second force parameters to a system integrator, one or more sensors measuring first and second accelerations of the ULD when the ULD moves into one or more sensing zones as a result of the forces and transmits first and second acceleration parameters to the system integrator, and the system integrator, which receives the first and second force parameters, and the first and second acceleration parameters, and calculates the mass of the ULD while the ULD is on-board the vessel by performing regression analysis on ordered pairs including the first force parameter and the first acceleration parameter, and the second force parameter and the second acceleration parameter.

Abstract: A cargo handling system includes a power drive unit (PDU) configured to transport cargo within an aircraft. The cargo handling system further includes a cargo control unit (CCU) configured to output control data for controlling operation of the PDU. The cargo handling system further includes a power control unit (PCU) coupled to the PDU and the CCU. The PCU is designed to receive alternating current (AC) electrical power from a power source, convert the AC electrical power into direct current (DC) electrical power, receive the control data from the CCU, generate an output signal including the DC electrical power and the control data, and transmit the output signal to the PDU.

Abstract: Systems for exchanging information between a cargo handling system of an aircraft and a Power Drive Unit (PDU) are described herein. The systems include a power source provided within the aircraft and a first PDU provided within the aircraft. The power source is capable of providing DC power to the at least one PDU via an electrical power line. The power source further including a first Power Line Communication (PLC) node and the PDU further including a second Power Line Communication (PLC) node. The first PLC node being capable of communicating with the second PLC node via the electrical power line.

Abstract: A cargo handling system is disclosed. In various embodiments, the cargo handling system includes a direct current power bus; a motor connected to the direct current power bus and having a flux reference input; a unit controller connected to the motor and configured to detect a level of regenerative energy on the direct current power bus and to alter the flux reference input in response to the level of regenerative energy.