FACULTY

APPLIED TECHNOLOGIES

DEPARTMENT

AIRCRAFT TECHNOLOGY ENGINEERING

LEVEL OF STUDIES

UNDERGRADUATE

MODULE CODE

AE3130T

SEMESTER OF STUDIES

^5th

COURSE TITLE

 BASIC PRINCIPLES OF AERODYNAMICS

INDEPENDENT TEACHING ACTIVITIES

TEACHING HOURS PER WEEK

CREDIT UNITS

Lectures and Practice 

4

5

COURSE TYPE

Specialty course

PRE-REQUIRED COURSES:

TEACHING AND EXAMINATION LANGUAGE

GREEK

THE COURSE IS OFFERED TO ERASMUS STUDETNS 

COURSE WEBSITE (URL)

Learning Objectives

This course is the basic introductory course to the concepts of aircraft aerodynamics and the principles that apply in aircraft flight as well as the phenomena encountered in flight.

After successfully completing the course, students should :

·      have understood the nature of the atmosphere.

·      Have understood the basic principles of aerodynamics and the crucial aerodynamic coefficients.

·      Have knowledge of the aircraft geometric characteristics.

·      Distinguish and identify the types of airfoils.

·      Be able to describe lift generation and its alteration in correlation with geometry, altitude and speed.

·      Be able to describe the alteration of forces and their distribution during flight.

·      Be able to analyze and calculage the forces and moments that are developed during flight.

·      Be able to cooperate with their fellow students in order to compose and present a study associated with aerodynamic topics.

General Skills

•  Search, analysis and combination of data and information with the use of the necessary technologies

•  Autonomous work

•  Group work

  Unit 1: Introduction

Course object – Introductory concepts in Aerodynamics – Basic equations

Unit 2: Physics of the Atmosphere                              

International Standard Atmosphere (ISA), application in aerodynamics

Unit 3: Air flow around an object

Unit 4: Boundary Layer theory

Boundary layer, laminar and turbulent flow, free stream flow, reltive air flow, upwash and downwash, vortices, stagnation.

Unit 5: Aircraft geometric characteristics

Terms: airfoil chord, average aerodynamic chord, form drag (parasite), induced drag, center of pressure, angle of attack, positive and negative wing twist towards wingtips, fineness ratio, wing shape and aspect ratio.

Unit 6: Aerodynamic forces and moments I

Axis reference systems - Lift – Resistance – non dimensional functions – Forces and moments in horizontal flight – Thrust  - Weight – Aerodynamic Component  

Unit 7: Aerodynamic forces and moments II

Generation of lift and drag: Angle of attack, lift coefficient, drag coefficient, polar coordinate curve, stall, - Ιnduced drag – Wing contamination including ice, snow, frost. 

Unit 8: The theory of flight – Stability and flight dynamics

Relationship between lift, weight, thrust and drag- Slide ratio – Steady state flight conditions , performances -   – Load coefficient effect: stall, flight envelope and structural limitations – Ηigh lift devices – Longitudinal lateral operation – directional operation – Basic principles of stability and control. 

Unit 9: Mach number

Speed of sound, subsonic flight, supersonic flight, hypersonic flight, Mach number, critical Mach number, compressibility vibration, shock wave, aerodynamic heating, surface rule. Factors affecting the air flow in the engine intake of high speed aircraft. Effect of arrow angle on the critical Mach number.

Unit 10: Hypersonic area 

Introduction – Vertical shock wave – Speed and hypersonic flow – Interaction and reflection of blas waves – Detonation waves – Shock wave and detonation wave theory – Linear theory of hypersonic flow.

Unit 11: Airfoils

About airfoils – Airfoil theory – Airfoil classification

Unit 12: Wind tunnels

Introduction – Types of wind tunnels – Generation of uniform flow field – Nozzle – Measurement chamber – Diffuser – Fans – Energy requirements 

ΤEACHING METHOD

In the classroom

USE OF INFORMATION AND COMMUNICATION TECHNOLOGIES

•  Specialty Software

•  Use of Internet

•  Support of learning procedure by e-class platform

•  Use of computer data projector

TEACHING ORGANIZATION

STUDENT EVALUATION

Ι. Final written examination (100%) including:

- Multiple choice questions

- Short answer questions

- Aerodynamics problem solving

-Suggested Bibliography :

·      Χ. Γεωργαντοπούλου, Γ. Γεωργαντόπουλος, Εφαρμοσμένη Αεροδυναμική, Εκδ. Τσιότρας, 2014

·         Ν. Αθανασιάδης, Αεροδυναμική - Αεριοδυναμική, Εκδ. Καλαμαρά, 1992

·      Σ. Τσαγγάρης, Αεροδυναμική του Συμπιεστού Ρευστού, Εκδόσεις Συμεών, 1999

·      J. D. Anderson Jr., Foundamentals of Aerodynamics, McGraw Hill, 1991

·      H. Ashley, M. Landahl, Aerodynamics of Wings and Bodies, Dover Publ., 1985

·      J. J.Bertin, M. L. Smth, Aerodynamics for Engineers, Prentice Hall. 1999

·      L. J. Clancy, Aerodynamics, Pitman Publ. 1975

·      E. L. Houghton & A.E. Brock, Aerodynamics for engineering students, E. Arnold Ltd, 1974.