Modified p-k Method for Flutter Solution with Damping Iteration

FLUTTER solution techniques have been well developed in aeronautical engineering and may continue to be an interesting topic for modern aeroelasticians. Many efforts are devoted to getting a "true damping" solution of the flutter equation. For example, the p-k method[1] is widely used in routine flutter analysis for giving approximate true damping results, which are useful in flight flutter test programs. The promising g method for reliable damping prediction proposed by Chen[2] includes a first order of damping term in the flutter equation that is rigorously derived from the Laplace-domain aerodynamics. Recently, the g method was improved by Qiu and Sun[3] with an additional second order of damping term included in the flutter equation. Borglund[4] applied approximated p-domain aerodynamics up to first order of damping term by Chen[2] to compute the nominal eigenvalues using a modified version of the p-k solver in[5].