Quote:
Originally Posted by sendler
I'm hoping someone with Solidworks flow simulation can run a simple experiment for us. Create a rough tear drop. Say 2 feet max diameter and 10 feet long. Round in the front and straight sides tapering back will work if it makes it easier to create the shape without the complex curves. Compare the performance of that with the same shape that has been cut off flat on the front at 80% of the radius. And to a shape with the round front but a straight cylinder all the way back to a flat back. And finally, to the original best shape that is truncated at 60% of the length with a flat back.
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The 2' by 10' ice cream cone will have a free-flight Cd of around 0.086.
In ground effect it will be Cd 0.172.With wheels,maybe Cd 0.222,depending on how far they project outside the body.
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I'd like a drawing about the 80% nose to help think about that.
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The body with convex hemi nose and cylindrical section is Cd 0.201.
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For the truncated ice cream cone I'll have to get home and check my references.