Abstract: A computer-readable medium includes recorded instructions for performing a method of improving evacuation gas flow performance of an additive manufacturing build chamber. Instruction execution by a processor of a host computer device causes the processor to receive an input data set inclusive of flow field data of an inert gas through the build chamber, and an improvement metric operable to characterize flow improvements therein. The processor generates a flow field data set in response to the input data set, and extracts evacuation streamline data from the flow field data set. The streamline data describes expected flow paths of the inert gas through the modified build chamber. Instruction execution also causes the processor to generate an output data set using the streamline data, with the output data set including the flow improvements as characterized by the metric.

Abstract: A method for computer analysis of a quality of an as-programmed surface of a composite laminate. A first data set representing an as-programmed top surface is generated based on as-programmed ply definitions and a tool surface definition. Thereafter, a second data set representing coordinates of points of a first mesh on the as-programmed top surface is generated, which points form a first mesh. Then a third data set representing coordinates of points of a second mesh on a defined tool surface is generated. A respective angle of each mesh element of the first mesh relative to a corresponding mesh element of the second mesh is then calculated. Each angle is compared to a threshold of acceptable angle. In response to an acceptable number of angles exceeding a threshold of acceptable angle, a tow placement machine may be programmed to fabricate a composite structure using the as-programmed ply definitions.

Abstract: A method and apparatus are disclosed for controlling a genset having an engine and an alternator in order to prevent an excessive change in a speed of the engine because of a sudden change in a load on the alternator. The method includes obtaining a first measured value of an actual AC output power of the alternator at a genset controller during a first time period, and obtaining a second measured value of the actual AC output power of the alternator at the genset controller during a second time period. The method further includes determining at the genset controller a first output power based upon at least the first measured value, and a second output power based upon at least the second measured value.