Advanced Flight Dynamics

AERO-45705

Fall 2023

Prerequisite:

Aircraft Stability and Control (Flight Dynamics II)

Instructor:

Hadi Nobahari, Room: The President Office, 66164040, nobahari(atsign)sharif.edu

Teaching Assistant:

Mohammad Hasan Tootian, mohammadhasan.tootian(atsign)ae.sharif.edu

Syllabus:

1. A Fast Review of Basic Flight Dynamics

• Rigid Body Equations of Motion

• Forces and Moments Acting on a Flying Vehicle

• Static Stability

• Controllability of Steady State Flights

• Dynamic Stability

• Sensitivity Analysis of Dynamic Modes

• Stability Augmentation

2. Coupled Longitudinal and Lateral Motions

• Rotating Machinery

• Asymmetric Inertial Properties

• Asymmetric Aerodynamic Properties

• Asymmetric Flight Condition

• Inertial Coupling

• Coupling Controls

• Constant Angular Rates

3. Flying and Handling Quality

• Definitions and Concepts

• Regulations

4. Nonlinear Stability Analysis of Flying Vehicles

• Sources of Nonlinearities

• Validation of Linear Equations of Motion

• Lyapunov Stability Analysis

• Generation of Lyapunov Functions

• Stability Analysis in Phase Space

• Energy Method

5. Analysis of an Elastic Flying Vehicle

• Aero-elastic Topics and Phenomena

• Modeling of Static and Dynamic Elastic Behaviors

• Motion Equations of an Elastic Airplane

• Transfer Functions of an Elastic Flying Vehicle

• Aerodynamic Coefficients of an Elastic Flying Vehicle

• Equivalent Elastic Model

• Stability and Control Derivatives of an Elastic Flying Vehicle

6. Analysis of a Flying Vehicle within Atmospheric Disturbances

• Different Types of Atmospheric Disturbances

• Modeling of Deterministic Atmospheric Disturbances

• Stochastic Variables

• Modeling of Stochastic Atmospheric Disturbances

• Response of a Flying Vehicle to Turbulence

• Monte Carlo Evaluation

7. Analysis of a Manned Flying Vehicle

• Description Model of a Human Pilot

• Optimal Pilot Model

• Pilot as a Controller

• Pilot Rating Based on Pilot Model

8. Flight Control Systems

• Classification

• Open-loop Analysis of Flying Vehicles

• Stability Augmentation Loops

• Autopilots

• Passive Flight Control Systems

Text Book

1. Jan Roskam, "Airplane Flight Dynamics and Automatic Flight Control", Part II, 1998.

2. Donald McLean, "Automatic Flight Control System", 1990.

3. Robert F. Stengel, "Flight Dynamics" 2004.

4.   David K. Schmidt, "Modern Flight Dynamics", 2012.

Grading

Homework                                  5+1 out of 20+3

Mid-term (1402/08/29)               4 out of 20+3

Final Exam                                  8 out of 20+3

Paper Presentation 3+1 out of 20+3

Class Presence                             +1 out of 20+3