| Popis: |
This paper presents the preliminary study results of dynamic modeling and flight control simulation of large flexible launch vehicles such as the Ares-I Crew Launch Vehicle. A complete set of six-degrees-of-freedom dynamic models of the Ares-I, incorporating its propulsion, aerodynamics, guidance and control, and structural flexibility, is developed. NASA’s Ares-I reference model and the SAVANT Simulink-based program are utilized to develop a Matlab-based simulation and linearization tool for an independent validation of the performance and stability of the ascent flight control system of the Ares-I. A linearized state-space model as well as a non-minimum-phase transfer function model (which is of typical for flexible vehicles with non-collocated actuators and sensors) is validated for the ascent flight control design and analysis of the Ares-I. |
