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AME 33033Aerodynamics Laboratory
Spring 2008
Instructor: Robert C. Nelson
Office: 106 Hessert Laboratory
Telephone: 574-631-4733
email: [email protected]
Office hours: By appointment
Laboratory Experiments
• Lab Groups will be assigned.
• Your Lab group time will be selected on the Friday before the week the laboratory is scheduled.
• Read the Laboratory Handout before coming to the Lab.
• All Experiments will be performed in tunnels at the Hessert Lab.
What is a wind tunnel?
• A wind tunnel is a device that can be used to test aerospace vehicles or their components under controlled conditions.
From Wind Tunnel Testing by Pope
Why do we need experimental facilities like wind tunnels?
• Wind tunnels are used to obtain aerodynamic information on aircraft bridges, buildings, automobiles and various other objects.
• Wind tunnels have been designed for a wide range of flight speeds.
• What type of information can we gain from a wind tunnel test and why is it important?
Minimizing Design Risk
• Wind tunnels help designers to build confidence in their design.
• Experiments provide information so that the designer and corporate leaders can confidently commit to a major new development program.
What does it cost to build a new Subsonic Jet Transport?
• Design time for a new transport aircraft is approximately 4.5 years.
• The Company must pay thousands of engineers and support people to design and develop the airplane.
• For example, Airbus has probably had to mortgage the net worth of the company to finance the development of the A380.
• If the A380 is not successful the Airbus would be in big trouble financially.
Airbus A380
• Gross weight 1.2 million pounds
• 555 to 840 passengers
• Maximum range 10,000 miles
• 20% more efficient than B747-400
Course Goals
• To understand how experimental techniques can be used to provide improved understanding of aerodynamic phenomena.
• To appreciate ethical issues dealing with experimental studies.
• To be able to critical assess experimental information.• To be able to present your results in a well written
technical report.• To be able to present a good oral presentation of your
work.• To be able to work effectively as a member of the
team.• To be able to design an experiment.
Course Handouts
• Course Schedule
• Course Policy
• Report Format
• Peer Review report
• Laboratory handout
• Supplemental material
Course Policy
• You must attend your assigned laboratory session. Failure to do so will result in a zero for that laboratory exercise.
• Laboratory reports must be turned in on time. Late reports will be penalized.
• For the individual lab report you will collect the data as a group but you must not collaborated with anyone in analyzing the data or in writing up your report. Failure to do so will be an honor code violation.
• For group laboratory reports you should work as a team to collect, analyze, interpret and document your results in a clearly written technical report.
Grading
• Four group lab reports* @ 10% each 40%• One individual lab report 10%• One group oral presentation
10%• Quizzes
20%• Examine
20%• TOTAL
100%
Aerodynamics Lab TAs
• Jacob Cress B028 Hessert
• David Schatzman 115 Hessert
• Zachary Zikoski 321 Cushing
• Ahaddy Abado 117 Hessert
Aerodynamics Laboratory Experiments
• Force balance measurements on an airfoil.
• Pressure Distribution over an airfoil.
• Boundary Layer measurement over a flat plate.
• Measurement of propeller thrust and Torque.
• Measurement of finite wing aerodynamics.
Course Schedule
Class Schedule for AME 30333 Aerodynamics Laboratory Spring 2008Week Monday Wednesday Friday
15-Jan Introduction Ethical Issues in experimentation
22-Jan Experimental Airfoil Aerodynamics Dimensional Analysis Measurement of Aero Coefficients
29-Jan Thin airfoil theory Thin airfoil theory Wind Tunnel CorrectionsAero Lab Experiment #1 Aero Lab Experiment #1 Aero Lab Experiment #1
5-Feb Discussion of Lab #1 Quiz # 1 Prediction of pressure distribution over Prediction of aerofoil aerodynamic
Wind Tunnel Corrections an Airfoil coefficients from pressure dataan airfoil12-Feb Making pressure measurements Different Types of Aerodynamic Testing Flow Visualization Techniques
Lab Report # 1 dueAero Lab Experiment #2 Aero Lab Experiment #2 Aero Lab Experiment #2
19-Feb Discussion of Lab #2 Boundary layer theory Boundary Layer measurementsGetting Quantitative data from Flow Viz Quiz #2
26-Feb Boundary layer theory Boundary layer theory Propeller TheoryLab Report # 2 due
Aero Lab Experiment #3 Aero Lab Experiment #3 Aero Lab Experiment #3
4-Mar Semester Break Semester Break Semester Break
11-Mar Discussion of Lab #3 Propeller Theory Wind Turbines
Propeller Theory Quiz # 3
18-Mar Wind Turbines Finite Wing Theory Good FridayLab Report #3 Due No Class
25-Mar Easter Holiday Discussion of Lab #3 Quiz #4 Finite Wing Aerodynamics
Finite Wing Aerodynamics Finite Wing Theory Finite Wing Theory1-Apr Aero Lab Experiment #4 Aero Lab Experiment #4 Aero Lab Experiment #4
8-Apr Discussion Lab #4 Quiz # 5 Wind Tunnel Corrections No Class
15-Apr Lab Report # 4 Due No Class Design of Experiments-Class Exercise Design of Experiments-Class ExerciseAero Lab Experiment #5 Aero Lab Experiment #5 Aero Lab Experiment #5
22-Apr Discussion of Lab # 5 Quiz #6 Ethical Issues in experimentation review No ClassUnique Wind Tunnels
29-Apr No Class ExaminationLab Report # 5 Due