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GIANNINI CONTROLS CORP DUARTE CALIF
A practical and accurate method of converting conventionally computed flutter data into the roots of aeroelastic system dynamic response is presented. These latter are currently found almost exclusively by test and almost never analytically because of severe computational difficulties. The differences and similarities between these two sets of parameters are delineated and discussed. The computational procedure presented in this report related the flutter roots to the system dynamic response roots by establishing, in closed form, the rate of change of the latter with the former. As is shown, this rate of change is fortunately tolerant of aerodynamic complexity, and furthermore it can be calculated with little or no knowledge of the original system that it, purely from the conventional flutter data itself. Step-by-step rules to guide this transformation are given in the first section of this report, accompanied by appropriate suggestions and aids to practical use. These are then demonstrated in typical use. A second section proves the algebraic validity of the method. This section is presented separately so that the step-by-step procedure of the first section can be set forth with maximum clarity. Author
AF49 638 1015