A Robust ASE Correlation and Analysis Method

摘要

A robust method for Structural Coupling Test (SCT) correlation and subsequent Aeroservoelastic (ASE) analysis is presented. The method provides a means with a limited set of SCT test conditions to develop a correlation model that can be applied to the analysis of many other configuration/condition variations such as fuel states, flight conditions, internal store and external store carriage, and for modernization. The method makes use of a set of normal modes and other generalized coordinates; all used as 'primitive' modes during both correlation and analysis. This uses a set of correlation variables or coefficients whose values are established during the correlation process and then used throughout all the subsequent analysis. Several correlation solution techniques are discussed but the application presented uses an optimization process. As is evidenced by the data presented, the method resulted in very good correlation. The method also resulted in a significant reduction in correlation and post-correlation analysis times. The development of this method was driven by a SCT being conducted on a high-serial-number F-22 to determine the effect of changes that had occurred in the aircraft since EMD.