Flutter Analysis of a 3D Aeroelastic Wing by Aerodynamic Strip Theory

The objective of this article is to devise an analytical technique to determine the flutter behavior of an aircraft's 3D wing structure, and then utilize numerical methods to resolve it. This technique relies on a consistent cantilever wing formation. The examination of a structure that experiences exclusively bending and twisting modes will be demonstrated through the 3D flutter approach using the assumed shape method. Afterward, this technique was utilized on a specimen from the written works, and the outcomes were contrasted with those published in the literature. The findings are consistent with what has been reported in existing research. The subsequent stage involved conducting flutter analysis on various aspect ratio and thickness ratio values and subsequently comparing the outcomes. The findings revealed that a reduction in aspect ratio leads to a decrease in flutter velocity, while an increase in thickness ratio results in an increase in flutter velocity.