# Aerofoil Design Xflr5

Topics: Airfoil, Aerodynamics, Angle of attack Pages: 21 (6185 words) Published: November 14, 2012
| 2012|
| [ANALYSIS OF MODEL AIRFOILS USING XFLR5 PROGRAM]| |
|

Author : Student I.D :
| Aashiq Zakir Hussain12108227 |
Supervisor : | Dr. Patrick Frawley |
Submission : Date | 26th October 2012 |

ABSTRACT Airfoil is the main part of the airplane which contributes the lift required by the airplane to fly in the air. By varying the wing’s area and the angle of attack, different lift can be created and can be used to fly the airplane. This program named XFLR5 is used for determining the airfoil characteristics. It will help them to save a lot of time on computing the equations and on the trial and error method. The program can also be used as basic tool to show the users what will happen when some variables like Reynolds number, the AOA of the wings and the speed of the aircraft are changed and how it will affect the results and lift generated. This project report deals with the analysis of widely used airfoils in the modern aircrafts. In this analysis, the lift, drag, pressure profiles and their coefficients of the airfoils are been calculated using xflr5 program. These are obtained in the form of graphical representation by feeding data such as Reynolds number, Mach number, Angle of Attack and dimensions of the airfoils to the program. The results such as maximum lift coefficient, stalling angle, maximum lift to drag ratio and such parameters are obtained and are been compared with each other.

TABLE OF CONTENTS

NOMENCLATURE…………………………………………………………………………………………..….4 INTRODUCTION 4
OBJECTIVES…………...…………………………………………………….………………………………….5 LITERATURE REVIEW……………………………………………………………….……………………….5 i Introduction5
ii Terminology for Airfoil and Airplane.6
iii Definitions.........................................................................................................................................7
iv The Four Forces on the Airplane.....................................................................................................................8 * v Theory of Lift...................................................................................................................................................9 * vi Newton’s Law Explanation............................................................................................................................9 * vii Bernoulli’s Principle....................................................................................................................................10 * viii The Factors affecting Lift............................................................................................................................11 ix NACA 4 series..............................................................................................................................12 x Thin Airfoil Theory.........................................................................................................................13 xi Flat Plate Theory.............................................................................................................................14 EXPERIMENTAL PROCEDURE AND ANALYSIS 15

Exercise A.........................................................................................................................................................15 Analysis......................................................................................................................................................18 Exercise...

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