Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Best approach for aero improvement on sedan roof?

aerohead · 06-27-2016, 05:53 PM

Hucho states emphatically,that the lowest drag is always achieved with the fastback roofline.And it needs to follow closely to the Mair/Buchheim contour.

Here,GM has used it on their Citation concept,which has returned Cds below 0.14.

A recent Buick Riviera concept

Here is Mair

Here is Buchheim

The Aerodynamic Streamlining tool at the top of the forum page respects Mair's contour.If you wanted to consider a Kamm extension,that's what it's for.

06-27-2016, 05:53 PM	#19 (permalink)
aerohead Master EcoModder Join Date: Jan 2008 Location: Sanger,Texas,U.S.A. Posts: 15,895 Thanks: 23,972 Thanked 7,223 Times in 4,650 Posts	Malibu roofline Hucho states emphatically,that the lowest drag is always achieved with the fastback roofline.And it needs to follow closely to the Mair/Buchheim contour. Here,GM has used it on their Citation concept,which has returned Cds below 0.14. A recent Buick Riviera concept Here is Mair Here is Buchheim The Aerodynamic Streamlining tool at the top of the forum page respects Mair's contour.If you wanted to consider a Kamm extension,that's what it's for. __________________ Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/ Last edited by aerohead; 06-29-2016 at 01:54 PM.. Reason: add image