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CLASS
MATERIAL


http://www.clarkson.edu/~pmarzocc/AE430/
Syllabus (pdf)
Class Notes:
AE4301
Stability and Control
Introduction

AE4302
Atmospheric
Flight Mechanics

AE4303
Static/Dynamic Stability/ Longitudinal Static
Stability (part I)

AE4304
Longitudinal Static Stability
(part II)

AE4305
Aircraft Control
Overview

AE4306
Longitudinal Control

AE4307
Directional Stability

AE4308
Aircraft Equations of Motion

AE4309
Longitudinal Motion (Stick Fix)

AE43010
Lateral Motion (Stick Fix)

AE43011

AE43012

AE43013

AE43014

AE43015

Reports folder
Homework Assignments
(TBD)
Math:


PREREQUISITES


AE 455/ME 455, MA 231 (Calculus III), MA 232 (Differential
Equations) or equivalent


BRIEF COURSE
OUTLINE


An introduction to atmosphere flight vehicle dynamics.
Static stability and control. Equations of motion. Dynamic stability and
control. Classical control theory. Transfer functions and block diagrams. Routh's criterion, Root locus techniques, Bode plots.
Modern control theory. State space techniques. Observability,
and controllability. Flying qualities, ratings and regulations. Application
to aircraft autopilot design


TEXTBOOK


Nelson, R. C., Flight Stability and Automatic Control, 2nd
Ed., McGrawHill Co., 1998


REFERENCES


Etkin,
B., and Reid, L. D., Dynamics of Flight: Stability and Control, 3rd Ed., John
Wiley & Sons, 1996
Pamadi, B. N., Performance, Stability, Dynamics,
and Control of Airplanes, AIAA Education Series, 1998


LEARNING
OBJECTIVES


 Introduce
students to the fundamental concepts of atmospheric flight
dynamics
 Enable
students to analytically estimate static and dynamic stability
derivatives
 Enable
students to study the stability of longitudinal and lateral motions
using the linearized equations
 Enable
students to obtain responses to actuation of openloop and closedloop
controls
 Enhance
the students’ written, oral, and graphical communication skills


COURSE
GOALS


 Overview
principles of flight and the classical/modern theory of stability and
control
 Present
conventional and unified notation for flight mechanics variables,
forces, and moments
 Derive
classical, uncoupled rigid body equations of motion used for S&C
analysis of aircraft
 Define
and physically explain the static and dynamic stability and control
derivatives
 Understand
the concepts of equilibrium, neutral point, trim, etc.
 Introduce
transfer function representation, dynamic stability, and modes of
motion
 Present
examples of flight models used in analysis and design


GRADES


All tests will be closed book, closed notes, and held
during the class period (1 hr 15 min).
[1] Homework 15%
[2] Test 1 20% (~ Sep 25)
[3] Test 2 20% (~ Oct 28)
[4] Test 3 20% (~ Nov 25)
[5] Project 25% (~ Project report and oral presentation  Dec 10)


PROJECT


Select one of the two projects illustrated next:
1) To enhance learning, the students are required to evaluate the stability
and control characteristics of actual airplanes. Each team (of two
students) selects an airplane, obtains its geometric and mass data, computes
stability and control derivatives, and studies the longitudinal and
lateraldirectional motions. Students submit workinprogress reports
at midsemester and final reports at the end and make oral presentations.
2) To enhance learning, the students are required to find one or more
literature article (from a journal, book, etc.) where the problem of
stability and control of airplanes has been treated. Each team (of two
students) should choose any of the topics under the general category of
stability and control of airplane. However, aside from this constraint, the
primary driving force in the selection of the paper topic should be your
interest. You should review the literature in order to become familiar with
your topic and the issues surrounding it. Students submit workinprogress
reports at midsemester and final reports at the end and make oral
presentations.
Note: Start this assignment early! ALL topics must be approved by the
instructor, due date: first week of October.


DETAILED
OUTLINE


Flight Mechanics (Chapter 1)
 Atmospheric flight
mechanics, aerodynamic nomenclature, reference
frames
Static Stability and Control (Chapter 2)
 Longitudinal static
stability
 Pitch control
 Lateral /
directional static stability
 Roll & yaw
control
 Stick forces
Aircraft Equations of Motion (Chapter 3)
 Linearized equations
of motion
 Dynamic
stability
Longitudinal Motion (Chapter 4)
 Pure pitching
motion
 Longitudinal EOM
 Phugoid and shortperiod
modes
 Longitudinal flying
qualities

Lateral Motion (Chapter 5)
 Pure rolling motion
 Pure yawing motion
 Lateral EOM
 Spiral, roll, and
Dutch roll approximations
 Lateral flying
qualities
 Aeroelastic effects
Introduction to Modern Control Theory
(Chapter 9)
 Statespace
modeling, Solution of state equations
 Controllability and
observability
 State feedback
design
Aircraft Autopilot Design Using Modern
Control Theory (Chapter 10)
 Longitudinal
stability augmentation
 Lateral stability
augmentation


