[aerohead]

Originally Posted by kach22i

I'm suffering from some 'déjà vu' today, going back to an old but not real old post.

http://ecomodder.com/forum/showthrea...tml#post374147


http://ecomodder.com/forum/showthrea...tml#post374147


NOTE: The following page in the link above (page 6) has some template overlays as a visual aid.

The thing about the 'Template' is that if you want to approach Cd 0.07-0.08 territory,as Hucho cites,that you need the profile of the streamline half-body,and you also need the effective fineness ratio which the 'Template' provides in order to protect the boundary layer.Remember,streamlining is all about reducing pressure drag and that means minimizing,or eliminating separation.The 'Template' cannot produce separation,nor can it produce longitudinal vortices.Notchbacks can and do both.
Compare the Ford Probe-IV to the Probe-V.Do you see what Ford does with the aft-body to go from Cd 0.15,to Cd 0.137?

All of Hucho's Cd 0.15 forms are 'fastbacks.'
If you want to go below Cd 0.15 you elongate the fastback.It's the only way you can get there.