Overview
The project goal is to analyze and recreate an airfoil based on the NACA number. Then test and record the airfoil in simulated conditions. Then create an airfoil and test it to see if it matched the characteristics of its simulated counterparts.
Aeronca 15-AC Sedan Facts
The airfoil chosen comes from the Aeronca 15-AC Sedan, with a NACA number of 4412. The Aeronca 15-AC Sedan is used for bush flying. It has a high wing type.
Airfoil Data
Getting the vital data based on the NACA number involved looking up the NACA number for the chosen airfoil, and plotting its profile. We used the NACA 4 digit series profile generate to get the profile. This profile is used to create the airfoil for testing.
Airfoil simulation chart
Airfoil lift and drag - Wind tunnel Data
Angle |
Lift |
Drag |
Ratio |
---|---|---|---|
-20 | -0.38 | 0.2 | -1.9 |
-15 | -0.24 | 0.1 | -2.4 |
-10 | -0.1 | 0.06 | -1.7 |
-5 | -0.02 | 0.04 | -0.5 |
0 | 0.25 | 0.1 | 2.5 |
5 | 0.7 | 0.15 | 4.7 |
10 | 1.4 | 0.3 | 4.7 |
15 | 1.5 | 0.4 | 3.75 |
20 | 1.5 | 0.28 | 5.4 |
Why the simulation leads to different results
The simulation maybe leads to different results because it was created by students, and may not be totally accurate. Another reason might be that some things in the simulation might be entered incorrectly.