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American Institute of Aeronautics and Astronautics

    Course Outline

    Course Outline

    Practical Methods for Aircraft and Rotorcraft Flight Control Design and Hands-on Training Using CONDUIT®


    • Section 1. Introduction: The Flight Control Problem and Our Approach
      • Roles of Flight Control System and the Development Process
      • Flight Control System Design Challenges and Reference Material–Seven Key Do’s
      • Flight Control System Design Using Multi-Objective Parametric Optimization: Why is this a Good Approach?
    • Section 2. Fundamentals of Control System Design Methodology Based on Multi-Objective Parametric Optimization 
      • Roadmap of Multi-Objective Parametric Optimization Design Methodology
      • Typical Results Based on XV-15 Hover Case Study
      • Typical Results Based on XV-15 Forward Flight Case Study
    • Section 3. Overview of CONDUIT® Software
      • The CONDUIT® Interface, Overview of CONDUIT® Workflow
      • Problem Setup, Modes of Operation, and Integration with Other Tools
    • Section 4. Description of XV-15 Design Case Studies
      • XV-15 Hover and Forward Flight Case Studies
    • Section 5. Quantitative Design Requirements for Flight Control
      • Importance and Sources of Design Requirements and the Cooper-Harper Scale
      • Specifications: Generic, Rotorcraft, Fixed-Wing, User Defined, and Performance Metrics
      • Criteria Sets for XV-15 Hover and Forward Flight Case Studies
    • Section 6. Simulation Requirements for Flight Control Design
      • Modeling Fidelity Requirements and Use of a Simplified Block Diagram
      • Linear Bare-Airframe Models, Additional Components, Nonlinearities and Analysis Validation
    • Section 7. Conceptual and Preliminary Design of Flight Control Systems
      • Partial- vs. Full-Authority Implementation and Control Law Architectures
      • Preliminary Design of Feedback Compensation
    • Section 8. Design Optimization
      • Need and Challenge of Numerical Optimization of Flight Control Design
      • Numerical Scores for the Specifications and Numerical Optimization of the Design
      • Guidelines for Flight Control Optimization Results for the XV-15 Hover and Forward Flight Case Studies
    • Section 9. Sensitivity and Robustness Analyses
      • Sensitivity Analysis of the Design Solution and results for XV-15 Hover and Forward Flight
      • Assessing Robustness to Modeling Uncertainty
    • Section 10. Design Trade-offs
      • Design Margin Optimization (DMO)
      • Nested-Loop Design Margin Optimization Strategy for the XV-15 Hover and Forward Flight
    • Section 11. Optimization and Flight Test Evaluation of Hover/Low-Speed Control Laws for a Conventional Helicopter: Comparison of Nested vs Simultaneous
      • Two Optimization Strategies: Nested-Loop and Simultaneous Multi-Loop
      • Inner-Loop and Outer Loop Design Margin Optimization for the Nested DMO Approach
      • Validation of Analysis Model and Qualitative and Quantitative Evaluations
    • Section 12. Optimization and Piloted Simulation Evaluation of Full-Flight Envelope Longitudinal Control Laws for a Business Jet
      • Aircraft Model, Control Laws, Specifications
      • Optimization Strategy and Results, Handling-Qualities Evaluation
    • Section 13. Alternative Design Methods using CONDUIT®
      • Overview of Design methods and results: Linear-Quadratic Design, Explicit Model Following Design, Dynamic Inversion Design, H∞ Mixed-Sensitivity Design
      • Design Comparison