The Boeing Company

Daniel D Gilbertson

William David Kelsey

Ian Alexander Willson

John G Wilson

Liessman E Sturlaugson

Shahriar Alam

James Schimert

Christopher Michael Mutschler

A system and method includes a data sensor providing sensor data. A database is configured to store the sensor data over time in rows of a table. A processor is configured to convert the table into a temporal format and collapse the rows in a temporal table. The temporal data can be normalized, and the normalized temporal data can be natively analyzed over normalized time periods, e.g., to improve an efficiency and/or accuracy of the analysis. The systems and methods can also be used to efficiently inter-operate with non-temporal data as needed.

System and method for storage and analysis of time-based data

The disclosed examples relate to arranging graph data for display on a display device. One example provides, on a computing device, a method comprising determining one or more connected groups of nodes in directed acyclic graph data, for each connected group of nodes, determining a reachability from each node with no inputs to each of one or more nodes with no outputs to determine a plurality of initial node/terminal node pairs, and for each initial node/terminal node pair, determining a path from the initial node to the terminal node. The method further comprises initializing a grid based upon the determined paths, placing each node at a corresponding initial grid location, and placing edges between nodes based upon the determined paths to form an initial grid representation, modifying the initial grid representation via a cost function to form a modified grid representation, and outputting the modified grid representation for display.

Arranging directed acyclic graph data for display

An on-board recording system for a vehicle is disclosed. The on-board recording system is configured to monitor data for errors. The on-board recording system includes one or more processors and a memory coupled to the one or more processors. The memory stores data comprising a database and program code that, when executed by the processors, causes the on-board recording system to receive as input a data sequence including a plurality of frames. The frames are received and recorded by the on-board recorder at a corresponding assigned time offset and include a corresponding assigned message. The on-board recording system is further caused to determine a missing assigned message that has not been received at the corresponding assigned time offset. In response to determining the missing assigned message, the on-board recording system calculates a total length of time based on a number of missing assigned messages stored in the memory.

On-board vehicle recorder system monitor

Systems and methods for indicating the health of brakes on an aircraft or a ground vehicle. One method for monitoring brake health calculates the ratio of input energy to output energy during braking. The input energy is a function of commanded brake force and speed. The output energy may be measured by measuring the increase in temperature or the actual brake force over time during brake application. When using brake temperatures, the temperatures in a pair of brakes may optionally be compared. If the respective measured temperatures of the two brakes differ by an amount that exceeds a specified threshold, the system produces an indication that one brake may require repair or replacement. Variability due to operational and environmental factors that affect measured temperature can be reduced by comparing the measured brake temperatures for one brake with selected brake temperature data collected from the same brake during other landings under similar conditions.

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Hazelwood, MO, United States of America

Daniel D Gilbertson