Abstract:

To study the changes of nonlinear dynamics characteristics with different rudder, height and mass, the continuation algorithm is used to identify the equilibrium surfaces versus elevator, height and mass. According to the equilibrium, the global stability of hypersonic vehicles is studied based on bifurcation theory. Compared to conventional linear method, the analysis results show that bifurcation theory can describe the dynamic characteristics more accurately, which can provide a powerful tool for the design of aerodynamic layout and control laws of hypersonic vehicle.

Key words: hypersonic vehicles, global stability, nonlinear dynamic characteristics, bifurcation theory