# AAE 51400: Intermediate Aerodynamics

Description:

Thin airfoil theory, panel methods. Three-dimensional elementary solutions, lifting-line and lifting-surface models. Slender wing and slender body theory. Normal/oblique shock waves. One- and multi-dimensional compressible flows, conical flows. Method of characteristics. Introduction to transonic, hypersonic flow, and airfoil design.

Format: 3 hrs lecture per week.

Credit Hours: 3

Offered: Spring

Pre-requisite: AAE 334

Co-requisite: None

Course Instructor: A. Lyrintzis

Text: Typed lecture notes provided by the instructor

Assessment Method: Midterm Exam 35%, Final Exam 35%, Homework/Projects 30%

Course Goal & Objectives:

Goal:

To build the theoretical framework which will allow the student to solve engineering problems involving aerodynamics and give him/her the basic understanding needed for further study in this area or to work on interdisciplinary problems involving aerodynamics.

Objectives include developing abilities to:

Calculate lift of a thin airfoil using thin airfoil theory

Calculate lift for an arbitrary airfoil using panel methods

Calculate drag for an arbitrary airfoil using integral boundary layer methods

Calculate forces and moments of wings and other three-dimensional bodies

Calculate flows in nozzles, including shock waves, if any

Calculate moving shock (e.g. shock tube problem)

Calculate lift and wave drag of supersonic airfoils and hypersonic bodies using (modified) Newtonian theory

Calculate flows around conical bodies

Understand the basic issues in transonic flow and sonic boom

Necessary Background:

2. A first course in aerodynamics (e.g. AAE 334)

3. Ability to write a computer program

Topics:

1. Incompressible Airfoils (expected duration: 4 weeks)

## Thin airfoil theory, panel methods

Viscous flow around airfoils - Boundary layer integral methods

2. Incompressible Wings (expected duration: 3 weeks)

Three-dimensional elementary solutions

Lifting line and lifting surface models

Slender wing and slender body theory

3. Compressible Airfoils & Wings (expected duration: 7 weeks)

Normal/oblique shock waves

Multi-dimensional flows (flow around airfoils, conical flows)

Method of characteristics

Introduction to transonic, hypersonic flow and sonic boom

4. Introduction to Airfoil Design (expected duration: 1 week)

## Direct versus inverse methods, optimized airfoils

Relation to Program Objectives:

This is the first required course for the aerodynamics and the propulsion areas. All course objectives contribute to the program objective of providing technical competence in aerodynamics (1). The ability to formulate and solve engineering problems (2a) is emphasized in the homework assignments and the projects. Professional conduct (2d), life-long learning (3) and society impact (4) are discussed by the instructor through anecdotal stories throughout the course.

Prepared by: A. Lyrintzis

Date: April 2, 2001