Morphing Aerospace Vehicles and Structures

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John Valasek
John Wiley & Sons, Apr 9, 2012 - Technology & Engineering - 306 pages
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4.4.3 Model Grid 67 4.4.4 Dynamical Modeling 68 4.4.5 Reference Trajectory 71 4.4.6 Shape Memory Alloy Actuator Dynamics 71 4.4.7 Control Effectors on Morphing Wing 73 4.5 Morphing Control Law 73 4.5.1 Structured Adaptive Model Inversion (SAMI) Control for Attitude Control 73 4.5.2 Update Laws 76 4.5.3 Stability Analysis 77 4.6 Numerical Examples 77 4.6.1 Purpose and Scope 77 4.6.2 Example 1: Learning New Major Goals 77 4.6.3 Example 2: Learning New Intermediate Goals 80 4.7 Conclusions 84 Acknowledgments 84 References 84 5 Modeling and Simulation of Morphing Wing Aircraft 87 Borna Obradovic and Kamesh Subbarao 5.1 Introduction 87 5.1.1 Gull-Wing Aircraft 87 5.2 Modeling of Aerodynamics with Morphing 88 5.2.1 Vortex-Lattice Aerodynamics for Morphing 90 5.2.2 Calculation of Forces and Moments 92 5.2.3 Effect of Gull-Wing Morphing on Aerodynamics 92 5.3 Modeling of Flight Dynamics with Morphing 93 5.3.1 Overview of Standard Approaches 93 5.3.2 Extended Rigid-Body Dynamics 97 5.3.3 Modeling of Morphing 100 5.4 Actuator Moments and Power 105 5.5 Open-Loop Maneuvers and Effects of Morphing 109 5.5.1 Longitudinal Maneuvers 109 5.5.2 Turn Maneuvers 114 5.6 Control of Gull-Wing Aircraft using Morphing 118 5.6.1 Power-Optimal Stability Augmentation System using Morphing 119 5.7 Conclusion 123 Appendix 123 References 124 6 Flight Dynamics Modeling of Avian-Inspired Aircraft 127 Jared Grauer and James Hubbard Jr 6.1 Introduction 127 6.2 Unique Characteristics of Flapping Flight 129 6.2.1 Experimental Research Flight Platform 129 6.2.2 Unsteady Aerodynamics 130 6.2.3 Configuration-Dependent Mass Distribution 131 6.2.4 Nonlinear Flight Motions 131 6.3 Vehicle Equations of Motion 134 6.3.1 Conventional Models for Aerospace Vehicles 134 6.3.2 Multibody Model Configuration.

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About the author (2012)

John Valasek, Texas A&M University, USA
John Valasek is Associate Professor and Director of the Vehicle Systems & Control Laboratory within the Aerospace Engineering Department at Texas A&M University. He has been actively conducting flight mechanics and controls research of Manned and Unmanned Air Vehicles in both Industry and Academia for 25 years. He was previously a Flight Control Engineer for the Northrop Corporation, Aircraft Division. He has published over 100 peer reviewed articles, and is co-inventor on a patent for autonomous air refueling of unmanned air vehicles. His research is currently focused on bridging the gap between traditional computer science topics and aerospace engineering topics, encompassing machine learning and multi-agent systems, intelligent autonomous control, vision based navigation systems, fault tolerant adaptive control, and cockpit systems and displays.?He teaches courses in Atmospheric Flight Mechanics, Digital Flight Control Systems, Vehicle Management Systems, Cockpit Systems & Displays, and Aircraft Design.

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