AAE 450 Spring 2008 Dynamics and Control Alfred Lynam January 24, 2008 Dynamics and Control Main D&C Simulation Code and Required Inputs 1

AAE 450 Spring 2008 Simulink Code Dynamics and Control 2

AAE 450 Spring 2008 Features Dynamics and Control  Highly accurate and precise dynamics model includes:  Custom Variable Mass 6 DOF, Earth-Centered, Earth-Fixed Equation of Motion Integrator (uses quaternions to avoid singularities)  COESA 1976 Atmosphere Model  WGS84 Exact gravity model (can include mass of atmosphere and centrifugal forces)  Instantaneous center of gravity and inertia tensor estimators  Required Inputs  Nominal Trajectory/Initial Conditions  Pointing/Attitude requirements  Full and empty masses, centers of mass, and inertia tensors for stages  Center of pressure, aerodynamic coefficients, thrust, and wind  Future Work  Design a Controller 3

AAE 450 Spring 2008 Backup Slides  References –U.S. Standard Atmosphere, 1976, U.S. Government Printing Office, Washington, D.C. –NIMA TR8350.2, “Department of Defense World Geodetic System 1984, Its Definition and Relationship with Local Geodetic Systems.” –Stevens, B. L., and F. L. Lewis, Aircraft Control and Simulation, Second Edition, John Wiley & Sons, New York, –McFarland, Richard E., A Standard Kinematic Model for Flight simulation at NASA-Ames, NASA CR –"Supplement to Department of Defense World Geodetic System 1984 Technical Report: Part I - Methods, Techniques and Data Used in WGS84 Development,"DMA TR A. Dynamics and Control 4

AAE 450 Spring 2008 Dynamics and Control Backup Slides(EOMs) 5

AAE 450 Spring 2008 Backup Slides (Subsystems Within EOMs) Dynamics and Control 6

Backup Slides(6 DOF EOMs) AAE 450 Spring 2008 Dynamics and Control 7

Backup Slides(coordinates) AAE 450 Spring 2008 Figure by: Amanda Briden 8