Metodologia e aplicação de um modelo integrado de mecânica do voo e aeroelasticidade

Abstract

Due to the growing demand for more fuel-efficient aircraft, major manufacturers are designing lighter and more flexible structures. Consequently, isolated flight dynamics and aeroelasticity evaluations are no longer sufficient. This work shows a methodology for developing an integrated flight dynamics and aeroelasticity model. First, an introduction to aeroelasticity model is carried out, followed by an axes transformation from principal axes to body axes. The state-space model is formulated through an intermediate step where the frequency domain aerodynamic forces are transformed into the Laplace domain (RFA). Later, a flight dynamics model is presented applying small-disturbance theory. Then, both models are integrated into a state-space system that has the flight dynamics' rigid motion and the aeroelasticity's flexible modes. Finally, the methodology is applied to a generic aircraft model and both frequency and time domain analyzes are performed to compare the response of the integrated model to the isolated models.