Racingf1 wrote:For me I have great news because I got access to some baseline data in terms of downforce and drag generated by superkarts.i
Racingf1 wrote:Sorry for the delay. I've been quite busy and I din't have enough time to answer.
For Division 1 superkarts, the downforce values at 160 kmh (100 mph) are:
- Overall lift coefficient: -0.33
- Overall drag coefficient: 0,47
The front of the superkart tends to not produce any kind of downforce, and the key part is the rear wing.
For the rear wing itself the values are:
- Cl: -0.320
So, the expected overall downforce generated is between 320-350 N (at 100 mph).
In my case, I've found that for my model the best NACA airfoil was a NACA 9312 with an AoA of 13º.
The wing characteristics are:
- Span: 1200 mm
- Chord: 340 mm
- Air speed: 68 m/s
- SolidWorks Flow Simulation software
- Results with no endplates yet.
The results for this configuration are:
- Downforce: 1011 N
- Drag: 200 N
With and endplate (I'm still trying to define the best configuration) it increases the downforce values, but also the drag is a little bit increased.
Now, I'm not able, but I'm going to post to you some screenshots about my developments with the rear wing today.
I have a question related to the simulation results. If I have a symmetric airfoil, why do I have different flow lines in the result? The resuts should be symmetric too. As I said before, I will post during the day some screenshots to show all these things.
Once again, sorry for the delay in the answer.
Pierce89 wrote:Some superkarts have more balanced aero than others. In Racecar Engineering, Simon Mcbeath once tested two superkarts
in a windtunnel. One produced a good bit more downforce than the other. The one with more downforce also had a better aero balance. The one with much less downforce, produced it all at the rear, similar to your test.
To conclude, any can explain me how to post the screenshots that I did to show you my work? Because to post and image I see the option, but it refers to a website, and the screenshots are in my computer.
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