Development of the Aerodynamic/Aeroelastic Modules in Astros. Volume I - Aeroservoelasticity Discipline in Astros User's Manual

摘要

The behavior of the structural and control systems of flight vehicles are highly coupled through aeroelastic effects. An aeroservoelastic (ASE) interaction module was developed to facilitate ASE analysis and the application of ASE stability and response constraints within ASTROS. The aeroelastic plant state-space equations are based on minimum-state rational function approximation of the unsteady force coefficient matrices. The control system is defined in a way that allows incorporation of most general linear control laws in the aeroservoelastic loop, and yet allows efficient control margin and sensitivity computations by separating between changeable gains to other control elements and parameters. The new analysis and sensitivity items include open- and closed- loop flutter, control 5150 gain and phase margins, singular values, aeroelastic system gains, and continuous gust response. This report is part of the documentation which describe the complete development of an STIR Phase II effort entitled 'Development of the Aerodynamics/Aeroservoelasticity Modules in ASTROS'. Additional aeroservoelasticity (ASE) reports are the Theoretical Manual, the Programmer's Manual, and the Application Manual.