Wing Flutter Analysis of Model with Experimental and Theory Method

In this paper, firstly FEM model of the wing like plate is created by MSC NASTRAN software. This clamped plate is considered as swept and tapered. Moreover, the material is chosen as steel. Natural frequencies and their corresponding mode shapes are investigated via modal analysis by MSC NASTRAN. The results are compared with experimental modal analysis on a similar real model. Afterwards the aerodynamic FE model is created in MSC PATRAN, and then spliced to the structural model. The aeroelastic model is analysed by MSC NASTRAN in order to extract the flutter speed and corresponding frequency. Finally the real model installed in the wind tunnel and tested as a flutter experiment. The experimental result showed that the FEM flutter analysis results in MSC NASTRAN are close to experimental results.