MAE 551 Airfoil Theory 
Development of fundamental aerodynamic theory. Emphasis upon mathematical analysis and derivation of equations of motion, airfoil theory and comparison with experimental results. Introduction to super sonic flow theory. 3 credit hours. 

• Prerequisites  

Undergraduate course in aerodynamics or fluid mechanics and differential equations or consent of instructor. 

• Course Objectives  
After this course, the student will be able to explain the fundamental characteristics of subsonic airfoils and the connection between surface pressure distributions and the lift, drag, and pitching moment generated by the airfoil. The student will be able to discuss the effect of pressure distributions on the growth of the boundary layer and the resulting viscous effects. The assignments will help the student develop an understanding of the effect of geometry characteristics of the airfoil on the aerodynamic behavior. The student will be able to use thin airfoil theory and codes such as XFOIL to analyze airfoils and discuss the results. The student will be able to design subsonic airfoils using inverse design techniques. 

• Course Requirements  
Homework: Approximately three homework assignments Quizzes: Quizzes on Moodle, typically after every three or four lectures Examinations: One openbook, takehome final exam Software Requirement: Need Matlab and some familiarity with Matlab to run the MFOIL code, basic programming skills required (Fortran, C, C++, Matlab, or similar programming language) Projects: Two airfoil design projects and three short blog posts 

• Course Topics  
Overview of airfoil characteristics Development of thin airfoil theory Airfoil analysis using XFOIL Multipoint inverse airfoil design using PROFOIL and MFOIL codes Natural laminar flow and low Reynolds number airfoils Effect of airfoil characteristics on aircraft performance Adaptive airfoils Highlift airfoils Introduction to conformal mapping Introduction to transonic airfoil aerodynamic 

• Textbook  
John D. Anderson, Fundamentals of Aerodynamics, 5th Edition, McGraw Hill. ISBN: 9780073398105. Recommended, not required. (Textbook for MAE 355 Aerodynamics I — highly recommended for students who do not have a degree in Aerospace Engineering.) Earlier editions or other similar textbooks (on aerodynamics) will also work. J. Katz and A. Plotkin, LowSpeed Aerodynamics, Second Edition, Cambridge University Press, 2001. ISBN10: 0521665523  ISBN13: 9780521665520. Recommended reference book, not required. 

• Computer and Internet Requirements  
NCSU and Engineering Online have recommended minimum specifications for computers. For details, click here. One of the projects requires access to Matlab and a Windows PC (to run an executable for an airfoil design code compiled for a Windows PC). 

• Instructor  
Dr. Ashok Gopalarathnam, Professor Dept. of Mechanical and Aerospace Engineering North Carolina State University 3256 Engineering Building III Campus Box 7910 Raleigh, NC 276957910 
Phone: (919) 5155669 Fax: (919) 5157968 Email: agopalar@eos.ncsu.edu Instructor Website: http://www.mae.ncsu.edu/facultystaff/profile/ashokgopalarathnam/ 
