Using Computer Modeling to Optimize Cost and Maintain Performance Constraints for the Production of Aircraft Turbine Engines
Karl E. Sheldon, Christine M. Anderson‐Cook, W. F. O’Brien · Quality and Reliability Engineering International · 2004
Abstract The use of computer models and simulation can be an effective way of gaining valuable information about a variety of engineering systems. In this paper, quadratic polynomial models are used to estimate gas turbine engine performance models in an extensive simulation. The goal of the simulation is maximize the tolerances on a number of engine design features, while still producing an engine that will have an overall 3‐sigma (99.74%) pass rate on a number of geometric and performance constraints. The tolerances are maximized by using an optimization routine to determine the greatest allowable standard deviations (all with equal weights) and thus help to reduce engine‐manufacturing cost. Details are provided about how the models and simulation were constructed, as well as how information about the system was extracted from simulation results. A comparison of current production guidelines is made with those suggested by the study to show how system improvements can be achieved. Copyright © 2004 John Wiley & Sons, Ltd.