Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Aerodynamic Streamlining Template: Part-C

Tesla · 06-02-2018, 10:27 AM

I have re-done the equation with the specs from post 517 (3-Wheeler) just to explore those specs further, although it does come up with a 2.5:1 Aspect ratio, there are other issues which make it less than ideal.
I have made the x & y grid lines the same as the template so it's just a matter of lining up the height and length markers to compare, the overlay is below:

I think there's probably enough detail in the overlay to explain itself, particularly comparing the angles which start gentle but then accelerate to 27 degrees at the 80% mark, which breaks the 22 degree rule. Although the Aspect ratio is 2.5:1, the issue is that 1/3rd was in the fore body, which leaves the tail with a 1.67 tail ratio.

06-02-2018, 10:27 AM	#719 (permalink)
Tesla Master EcoModder Join Date: Feb 2012 Location: Australia Posts: 355 The Truck - '02 Nissan GU Patrol ST Thanks: 5 Thanked 76 Times in 50 Posts	Parametric Teardrop Curves Equation update I have re-done the equation with the specs from post 517 (3-Wheeler) just to explore those specs further, although it does come up with a 2.5:1 Aspect ratio, there are other issues which make it less than ideal. I have made the x & y grid lines the same as the template so it's just a matter of lining up the height and length markers to compare, the overlay is below: I think there's probably enough detail in the overlay to explain itself, particularly comparing the angles which start gentle but then accelerate to 27 degrees at the 80% mark, which breaks the 22 degree rule. Although the Aspect ratio is 2.5:1, the issue is that 1/3rd was in the fore body, which leaves the tail with a 1.67 tail ratio.