Airfoils (Aeronca 11-CC SuperChief; NACA 4412)
Aeronca 11-CC Super Chief
- The Aeronca Chief is a single-engine, two-seat, light aircraft with fixed conventional landing gear, which entered production in the United States in 1945. - Designed for flight training and personal use - was produced in the United States between 1946 and 1950 - strut-braced wings |
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.
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.
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AIRFOIL SIMULATION
The NASA FoilSim applet calculates the lift of an airfoil based on user inputs of flow conditions and wing geometry. We used the NACA number (4415) to set the shape of the airfoil. The first number (4) represents the camber, the last two digits (15) represents the thickness. The size of the simulate airfoil is the same as the test airfoil (4" chord and 4" span). |
The flight conditions are set at 60 mph and the altitude is at 0. The data is recorded with the Angle of Attack is set to -20 and the Final Angle of Attack to 20 and the Angle of Attack Step to 5 degrees.
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Construction
Airfoils coordinates are then generated on a website and the points are transferred into Autodesk Inventor and the airfoil is created. Then, when we are finished, we print the airfoils using a 3d printer.
Airfoils coordinates are then generated on a website and the points are transferred into Autodesk Inventor and the airfoil is created. Then, when we are finished, we print the airfoils using a 3d printer.