OrderCut Analysis Utility
• OrderCut Analysis utility generates and post-processes engine order related data from an OptiStruct or Nastran frequency response analysis that contains either RPM-based loading subcases or order-based loading subcases.
• Background, engine related noise, and vibration problems are typically linked to engine orders that are harmonic multiples of the engine’s fundamental firing frequency.
• Understanding the order content of the problem signal is a way to identify the physical phenomenon that is causing the problem.
• To solve the problem, you can adjust the design parameters to modify the engine operation, which in turn reduces the problem orders.