Aerodynamics and Flight Mechanics for Autopilot and Guidance System Design

The purpose of this course is to study all necessary performances of the missile required for the autopilot and guidance system design. The different reference trajectories are described and the following quantities are determined: missile velocity, trim angle of attack and control deflection, maximum lateral acceleration (maneuver capability), dynamic coefficients of the linearized perturbed motion and aerodynamic transfer functions parameters (natural frequency, relative damping ratio, factors of control and maneuver capability, incidence time lag constant, time constant of roll motion, factor of roll control effectiveness etc. Basic requirements for the autopilot design are discussed. The design of the autopilot for both statically stable and statically unstable missile is presented. The method of the design of the roll autopilot is also shown.

Student is qualified for independent work on the preparation and analysis of data for the of autopilot synthesis and guidance law selection as well as a selection of system components.

Introduction: Guidance and control of missile along trajectory. The role of aerodynamics in autopilot design. Subsystem relationships. How aerodynamics constrain autopilot performances. Statically stable and unstable configurations. Autopilot design for configurations with high maneuver capability. Input data for the autopilot and guidance system design.Equations of motion.Programmed flight in vertical plane and reference trajectories. Linearization of the equations of motion and missile transfer functions. Missile instruments and actuator used by autopilot.Lateral autopilot requirements and objectives.Design of pitch autopilot with rate gyro and accelerometer. Design of the pitch autopilot for the statically unstable missile.Roll autopilot design. Autopilot Design using Feedback Linearization Method.

Guided missile project, which includes the use of all fields enrolled within the contents of theoretical classes.

None

Ćuk, D .: Lectures in course Missile guidance and control, Faculty of Mechanical Engineering, Belgrade, 2002 (handouts)

Total assigned hours: 65

New material: 30
Elaboration and examples (recapitulation): 20

Auditory exercises: 0
Laboratory exercises: 0
Calculation tasks: 0
Seminar paper: 0
Project: 0
Consultations: 0
Discussion/workshop: 0
Research study work: 0

Review and grading of calculation tasks: 5
Review and grading of lab reports: 5
Review and grading of seminar papers: 0
Review and grading of the project: 3
Test: 0
Test: 0
Final exam: 2

Activity during lectures: 0
Test/test: 0
Laboratory practice: 20
Calculation tasks: 0
Seminar paper: 0
Project: 40
Final exam: 40
Requirement for taking the exam (required number of points): 40

P. Garnel: Guided Weapon Control System, Pergamon Press, New York, 1980.; ; Danilo Ćuk: Design of Beam-Riding Laser Guidance System,MTI, 1998. (skripte na engleskom);; Danilo Ćuk: Theory of Homing Systems, Proportional Navigation,MTI, 1998. (skripte na engleskom);