In accordance with at least one aspect of this disclosure, a controller for an aircraft electrical system includes, a software safe module. In embodiments, the software safe module can be configured to determine whether there was a sudden power failure upon controller initialization, and cause operation of the controller in a software safe mode if there was a sudden power failure such that manual intervention is required to leave the software safe mode to prevent repetitive power failure of the controller.

An emulator configured to emulate an automated aircraft assembly jig supporting an aircraft assembly is disclosed. The emulator connectable to an automated equipment module and configured to: send a first signal to an automated equipment module, wherein the first signal is representative of a communication to the automated equipment module; and receive a second signal from the automated equipment module representative of a communication from the automated equipment module, wherein the automated equipment module is arranged to operate autonomously on an aircraft assembly.

An advisory system of a vessel that monitors variables of a vessel system inclusive of systems and subsystems that are used to operate the vessel. The advisory system may use machine-learning to learn from an operator (i) whether or not two variables are related to one another, and (ii) likelihood that a variable will reach a threshold, and, optionally, time until reaching the threshold. The system may receive operator feedback (i) to indicate whether the two variables are related to one another, and (ii) whether a behavior of the variable is normal or not normal. Thereafter, if a determination that the same two variables are related to one another and behaving in a similar manner, provide notification to the operator of the behavior. In response to determining that the variable is behaving (e.g., trending) in a similar manner that is not normal, providing a notification to the operator.

A predictive maintenance system is disclosed. The system includes a network of analog and digital sensors, each sensor configured for measuring telemetry data associated with temperature levels, voltage levels, current levels, and other analog or digital parameters. The system includes microprocessors for receiving the (digitized) analog and digital telemetry data, tabulating and timestamping the raw telemetry datasets. The microprocessors compress the raw data and reduce its dimensionality by generating principal component sets from the raw data based on scalar parameters corresponding to machine learning algorithms stored to memory, the principal component sets capturing a majority of variances within the raw data. The principal component sets are organized into data packets including identifiers for the relevant algorithms. The data packets are transmitted via real time networks for either onboard storage or ground-based analysis.

A method of configuring an aircraft electrical system. The aircraft electrical system comprises a wiring harness and a plurality of electronic modules. The wiring harness comprises a plurality of connection points. The method comprises: connecting a first electronic module in the plurality to the wiring harness via a first connection point in the plurality; transmitting by the first electronic module, a connection point identification request; in response to the transmitting, receiving at the first electronic module from the wiring harness, an identifier of the first connection point; on the basis of the received identifier, determining configuration data for the first electronic module, the configuration data being associated with the first connection point; and configuring the first electronic module to operate in accordance with the determined configuration data.

A monitoring method, the purpose of which is, when a loss of power is detected in an aircraft engine, to generate an alarm in the form of a single message displayed on a display screen in the cockpit, in order to indicate if the level of damage suffered by the engine is critical or not. The steps implemented are based on alarm signals transmitted by a central processing unit of the engine and also on alarm signals transmitted by a diagnostic device for the onboard systems of the aircraft, in order to take account of both the situation of the engine and also the situation of the systems surrounding the engine which can be affected by damage to an engine.

In accordance with at least one aspect of this disclosure, a controller for an aircraft electrical system includes, a software safe module. In embodiments, the software safe module can be configured to determine whether there was a sudden power failure upon controller initialization, and cause operation of the controller in a software safe mode if there was a sudden power failure such that manual intervention is required to leave the software safe mode to prevent repetitive power failure of the controller.

A platform assembly includes a work platform including a platform floor and a safety rail extending from the platform floor to a rail height, and a primary sensor unit secured to the work platform and positioned adjacent one of the platform floor and the safety rail. The primary sensor unit is configured to monitor an area from the platform floor or from the safety rail to a space above the rail height and forward and aft of the work platform. The platform assembly enhances protection for an operator from sustained involuntary operation resulting in an impact with an obstruction or structure.

Systems and methods for manufacturing aircraft are disclosed. For example, a method for repetitively manufacturing aircraft comprises fractionally pulsing a constituent part down an assembly line by periodically advancing the constituent part down the assembly line by less than a length of the constituent part. The periodic advancing may include advancing the aircraft component by a pulse length that is less than the length of the aircraft component, stopping movement of the aircraft component for a duration and performing work on the aircraft component, and then advancing the aircraft component by the pulse length again. In another example, a method comprises determining a fractional pulse length to fractionally pulse one or more constituent parts of an aircraft based on one or more of a minimum workstation length of one or more assembly line workstations and a minimum section length of one or more work processes to be performed.

An advisory system of a vessel that monitors variables of a vessel system inclusive of systems and subsystems that are used to operate the vessel. The advisory system may use machine-learning to learn from an operator (i) whether or not two variables are related to one another, and (ii) likelihood that a variable will reach a threshold, and, optionally, time until reaching the threshold. The system may receive operator feedback (i) to indicate whether the two variables are related to one another, and (ii) whether a behavior of the variable is normal or not normal. Thereafter, if a determination that the same two variables are related to one another and behaving in a similar manner, provide notification to the operator of the behavior. In response to determining that the variable is behaving (e.g., trending) in a similar manner that is not normal, providing a notification to the operator.