NAME_________________________________ CLASS____________________ DATE____________ 

Actual Airflow vs. Ideal Airflow Worksheet

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Step 2.

FoilSim Testing

Angle of Attack	Do you see a stall signature?
0
5
10
15
20

Step 4.

Wind Tunnel Testing

Angle of Attack	Do you see a stall signature?
0
5
10
11
12
13
14
15
16
17
18
19
20

Step 5.
Test different materials to use for the tufts and the ways to attach them to the airfoil section.

1. Which material is the most sensitive to airflow?
   
   
   
2. What is the most efficient way to bond the tuft to the surface?
   
   
   
3. Where is the best place to put the tufts?
   
   
   
4. Many modern aircraft wings incorporate stall warning transducers to notify the pilot that the airplane is approaching a stall condition. What would be a good threshold to activate the warning for this model wing?
   
   
   
5. Would you be able to design and implement such a device for the test airfoil?
   
   
   

Step 6.
In a technical report, explain why actual airflow differs from ideal airflow. Look at boundary layers to help with the concept of airflow separation. This explains why the flow of air in actual world conditions does not behave as predicted in ideal airflow predictions.