new mercedes b class 0.24 Cd

[winkosmosis]

I call shenanigans.

[Frank Lee]

Perhaps if I leave my computer on overnight I'll see the pics Vekke put up tomorrow? Would a downward resize hurt the detail any?

[Cd]

The slope of the roof line is very similar to the Golf and many other hatchbacks.
Its a shame so many of them are content on staying at a .32 Cd .

[lunarhighway]

i think the B class is a little larger than the golf, and the previous b class was a little higher than this model too, so mercedes had some room to lower the seats and free up some headroom that could be sacrificed for a better aero shape.

if the golf would have the same roofline as the B-class this would either impact rear passenger headroom, or if they chose to raise the front of the roof could increase frontal area.

but that said the comparison shows that with minimal changes in overall shape large differences in drag can be acieved. and with some carefull wiggeling a good compromise should be possible

i suppose this is why there's SUV's and crossovers comming out with rather surprising good drag coefficient, with their visual high stance it's easy to give or take a few centimeters to get a perfect roof profile, and a Cd that gives the impression they are as slippery as the sedan next to them (Cd x frontal area is still way over the heads of most buyers) especially when around 0.3 cd's are still marketed as "exeptional for it's class, etc..."

[cfg83]

Vekke -

Originally Posted by Vekke

...



This new flap before or on the side of the tire looks interesting.

...

Hmmmm. I vote quasi-vortex generators. But I'm guessing you'd need a wind-tunnel to adapt them to your car.

CarloSW2

[lunarhighway]

i find that shape *extremely* interesting

a while ago i started a thread on sawtooth trailing edges,
http://ecomodder.com/forum/showthrea...html#post59665
and this sort of borders on that idea. i imagine we might see more "magic" lumps and bumps appear on cars in the future.

perhaps this sort of idea might also work on front airdams, giving them "teeth" might produce a smoother and tighter flow pattern.... mmm might just try that

[cfg83]

lunarhighway -

Ha ha, Landshark!

CarloSW2

[euromodder]

Originally Posted by ChazInMT

Are MB Engineers looking in on Ecomodder???
FWIW, That is a very exact duplicate of the aerotemplate simply scaled to fit as Aerohead has recommended. I did NOT change a thing to make it match.

It just shows Phil's template is very close to the money, regardless of what wink-whatever says.

You could do this exercise with a bunch of recent European cars, they'll all be close.

[euromodder]

Originally Posted by lunarhighway

i think the B class is a little larger than the golf, and the previous b class was a little higher than this model too, so mercedes had some room to lower the seats and free up some headroom that could be sacrificed for a better aero shape.

Mercedes ditched the sandwich bottom construction of the earlier A / B, allowing them to lower the new B class.

[Cd]

I'd love to see a tuft test on this car. I'm very curios about the airflow near those side creases.