OverviewThe 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.
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Cessna 337 Skymaster (O-2) FactsSkymaster utilized as an observation and forward air control aircraft. The United States Air Force commissioned Cessna to build a military variant to replace the O-1 Bird Dog in 1966.
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Airfoil DataGetting 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
Construction
This airfoil that I made on Inventor was printed three dimensionally to create the orange object seen above. Then is was placed in the windtunnel and recorded data.
Wind Tunnel
The airfoil was put into a wind tunnel and tested from -20 degrees Angle of Attack to +20 degrees Angle of Attack at 5 degree increments. Before testing, the same experiment was performed using the NASA Foilsim app set to the exact same conditions to calculate the lift/drag coefficient. Since it is a ratio, the scaling of the airfoil should have no effect on the outcome.
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1. Explain differences between the airfoil simulation prediction and the wind tunnel test results.
The difference between the airfoil simulation prediction and the test results is that the simulation is more accurate that the wind tunnel because the numbers in the wind tunnel would increase and then decrease rapidly.
2. What characteristic of the airfoil had the most significant impact on lift and drag?
The basis shape is the characteristic that could most impact lift and drag because if the end of the airfoil is to high or to low it creates drag which makes it go slower.
3. Explain what you would change in the design of your airfoil design?
I would change the chamber to make the plane go faster or have more or less lift and drag.
The difference between the airfoil simulation prediction and the test results is that the simulation is more accurate that the wind tunnel because the numbers in the wind tunnel would increase and then decrease rapidly.
2. What characteristic of the airfoil had the most significant impact on lift and drag?
The basis shape is the characteristic that could most impact lift and drag because if the end of the airfoil is to high or to low it creates drag which makes it go slower.
3. Explain what you would change in the design of your airfoil design?
I would change the chamber to make the plane go faster or have more or less lift and drag.