NAS111 - Aeroelasticity using MSC Nastran

Length:
3 days
Pre-requisites :
NAS101A (Linear Static and Normal Modes Analysis using MSC Nastran), NAS101B (Advanced Linear Analysis using MSC Nastran), and NAS102A (Dynamic Analysis using MSC Nastran)
Topics:
Day One
- Overview of MSC Nastran aeroelastic capabilities
- Historical development
- Solution sequences
- Set definitions
- Matrix notation
- Coordinate systems
- Aerodynamic theories
- Subsonic doublet-lattice method (DLM)
- DLM with body interference
- ZONA51
- Strip theory
- Mach box method
- Piston theory
- Surface and linear splines
- Static aeroelastic analysis
- Theoretical background
- Trim
- Stability derivatives
- Element loads and stresses
- Divergence analysis
- Preparation of input/sample problems
- Stiffness and mass data
- Aerodynamic data
- Extra points for control surfaces
- Spline data
- Direct matrix input
- Solution control
Day Two
- Flutter analysis
- Methods of flutter analysis
- Structural damping
- Estimation of dynamic stability derivatives
- Inclusion of flight control systems
- Transfer functions
- Preparation of input/sample problems
- Calculation of modes
- Complex eigenvalues
- Aeroelastic divergence
- Solution control
- Guidelines for flutter analysis
- Selection of flutter method
- Convergence of modal solution
- Aerodynamic modeling
Day Three
- Dynamic aeroelasticity
- Preparation of input/sample problems
- Dynamic loads data
- Transient response calculation
- Gust response calculation
- Guidelines for effective response analysis
- Periodic loading
- Frequency distribution
- Spectral inputs
- Aeroelastic design sensitivities and optimization
- Miscellaneous topics