Srinivasan Engineering College, Perambalur

Srinivasan Engineering College, Perambalur

Odd Semester 2012 2013Course Handout

Date: 20.06.2013Course No.

:AE 2301 3 0 0 3

Course Title

: FLIGHT DYNAMICS

Course Instructor: G.MuralidharanInstructor-in-charge: G.MuralidharanScope and Objective of the Course:

This course will introduce the basic forces acting on the aircraft and their relevance to statics and dynamics of aircraft. The initial part of the course will deal with the static force and moment balance on the aircraft that leads to static stability concepts, the location of centre of gravity and the necessity for control surfaces for the aircraft. The second part of the course will deal with the dynamics of the aircraft under the influence of aerodynamic forces and moments. The mathematical modeling of the aircraft, its transfer functions and aerodynamic stability derivatives are discussed. Stability augmentation and autopilots along with Handling Qualities of the aircraft as specifications for control design will be discussed. The effects of gust and practical implementation of control systems in aircraft will also be introduced.Text book(s) [TB]

1. Perkins, C.D., and Hage, R.E., Airplane Performance stability and Control, John Wiley & Son:, Inc, New York.

References [RB]

1. Etkin, B., Dynamics of Flight Stability and Control, Edn. 2, John Wiley, New York, 1982.

2. Nelson, R.C. Flight Stability and Automatic Control, McGraw-Hill Book Co., 1998..

3. Dommasch, D.O., Shelby, S.S., and Connolly, T.F., Aero plane Aero dynamics, Third Edition, Issac Pitman, London, 1981Course Plan / Schedule:

S.NoIntroductionLearning objectivesRef. to Text BookNo. of lectures

1International Standard Atmosphere To learn about the properties of air with respect to altitude variations.R11

2Forces and moments acting on a flight vehicle To learn about Forces and moments acting on a flight vehicle R11

3Equation of motion of a rigid flight vehicle To learn about equation of motion for calculating aircraft performance from the steady level flight.R12

4Different types of drag - Drag polar of vehicles from low speed to high speeds Variation of thrust, power and SFC with velocity and altitudes for air breathing engines and rockets To learn about various types of drag affecting aircraft and drag reduction methods.R11

5 Power available and power required curves.To learn about power available and power required curves for piston engine and jet engine aircrafts.R11

8 Range and endurance To learn about range and endurance for piston engine aircrafts and jet engine aircrafts.T12

9Climbing and gliding flight (Maximum rate of climb and steepest angle of climb, minimum rate of sink and shallowest angle of glide) To learn about climbing and gliding performance of the aircraft from the equation of motion.T12

10Turning performance (Turning rate turn radius). To learn about turning performance of aircraft.T12

11Bank angle and load factor - Limitations of pull up and push over To learn about load factor considerations and maneuvering limitations.T12

12V-n diagram and load factor.To learn about velocity and load factor diagram with respect to maneuvering conditions.T12

13Performance of airplane in level flight - Maximum speed in level flight Conditions for minimum drag and power required To learn about minimum drag and minimum power required conditions.T12

14Degree of freedom of rigid bodies in space - Static and dynamic stability Purpose of controls in airplanes -Inherently stable and marginal stable airplanes Static, Longitudinal stability - Stick fixed stability To study about the various degrees of freedom with respect to flight control and learn about the difference between stability and control.T12

15Basic equilibrium equation - Stability criterion To learn about the basic stability equation.T11

16Effects of fuselage and nacelle - Influence of CG location To learn about stability equation with wing contribution and with tail contribution.T12

17Power effects - Stick fixed neutral point To learn about neural point and power effects of aircraft.T12

18Stick free stability-Hinge moment coefficient - Stick free neutral points Symmetric maneuvers - Stick force gradients - Stick _ force per 'g' Aerodynamic balancing. To learn about stick fixed and stick free forces conditions for aircraft.T12

19Determination of neutral points and maneuver points from flight testTo learn about determination of neutral points and maneuver points from flight test.T12

20Basic equilibrium equation - Stability criterion To learn basic equilibrium equation for Stability criterion.R11

21Effects of fuselage and nacelle - Influence of CG location To study the effects of fuselage and nacelle with respect to CG location.R12

22Power effects - Stick fixed neutral point To study about the power effects for the stability criteria.R11

23Dihedral effect - Lateral control To study about lateral dihedral effect.R12

24Coupling between rolling and yawing moments To learn about how rolling effect is possible w.r.t yawing and yaw due to roll.R21

25Adverse yaw effects - Aileron reversal To study about aileron reversal w.r.t high velocity conditions.R21

26Static directional stability - Weather cocking effect - Rudder requirements To learn about weather cocking effect and basic rudder requirements for the flight stability.R21

27One engine inoperative condition - Rudder lockTo learn about rudder lock operation and one engine inoperative condition for the aircraft.R21

28Dynamic longitudinal stability: Equations of motion To derive the equations of motion for longitudinal stability condition.R21

29Stability derivatives - Characteristic equation of stick fixed caseTo learn the stability derivatives from the equation of motion.R21

30Modes and stability criterion - Effect of freeing-the stick To learn about Modes and stability criterion.R21

31Brief description of lateral and directional. To study about lateral and directional stability.R21

32Dynamic stability - Spiral, divergence, Dutch roll, To study unstable conditions of aircraft.R21

33Auto rotation and spin. To study unstable conditions of aircraftR21

Total number of classes planned: 45Hrs

Evaluation scheme Internal AssessmentEC No.Evaluation ComponentsDurationWeightDate & TimeVenue

1Unit Test 11.30hr 30%Will be announced by the exam cell

To be announced later

2Unit Test 21.30hr

3Unit Test 31.30hr

4Model Exam13hr 40%

5Model Exam23hr

6Assignment10%

7Attendance PercentageContinuous 20%

I. Assignment topic:

II. Part-A Question with answer will be issued by the instructor on completion of each unit.

Timings for chamber consultation: Students should contact the Course Instructor in his chamber during lunch break.Notices: All notices will be displayed on the Department Notice Board.HOD

Instructor-In-Charge Instructor PAGE Format No: FM2 / Issue: 01 / Revision: 00