Computational Modal Analysis of the LASTA Aircraft

 

Jelena Dimitrijević

Predrag Kovačević

 

This paper presents the results of the Computational Modal Analysis of a complete finite element model of the LASTA aircraft. The results of calculation, normal frequencies and normal mode shapes, shown here, will be used for the further aeroelastic analysis to confirm that this aircraft is free from flutter in the range of the designed speed. A short theoretical review of the Computational Modal Analysis and Lanczos Method is presented in this paper.

Key words: aircraft, propeller aircraft, trainer aircraft, eigen oscillations, modal analysis, numerical analysis, Finite Element Method.