Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Standard roof shape vs Kammback with higher frontal area?

arcosine · 08-05-2012, 02:42 PM

A long cylinder has a cd of .82 and a streamlined body .04. If the long cylinder is placed inside a streamlined body, the drag will be lower even thought the frontal area is greater. An extreme example.

08-05-2012, 02:42 PM	#8 (permalink)
arcosine Master Ecomadman Join Date: Nov 2010 Location: Chicago area Posts: 1,156 sc1 - '98 saturn sc1 Team Saturn 90 day: 43.17 mpg (US) Airplane Bike - '11 home built Carp line Tour rans - '97 rans tailwind tractor - '66 International Cub cadet 129 2002 Space Odyssey - '02 Honda Odyssey EX-L 90 day: 28.25 mpg (US) red bug - '00 VW beetle TDI big tractor - '66 ford 3400 red vw - '00 VW new beetle TDI 90 day: 58.42 mpg (US) RV - '88 Winnebago LeSharo 90 day: 16.67 mpg (US) Thanks: 20 Thanked 337 Times in 227 Posts	A long cylinder has a cd of .82 and a streamlined body .04. If the long cylinder is placed inside a streamlined body, the drag will be lower even thought the frontal area is greater. An extreme example. __________________ - Tony