Cd 0.38

[aerohead]

Originally Posted by skyking

thanks Phil. This all gives me hope that my Kamm efforts are the way to go.

From Jaray's,Lay's,Kamm/Fachsenfeld's,Hucho's,and Buchheim et al's research,it's the only thing which has a track history of performance.
Darin's Honda proved that it's not a 100% solution though.I suspect that there was drag reduction,but the engine didn't react favorably to the mods.
Chrysler and Dr. Gino Sovran warned about gear-matching requirements.Hope you don't hit a snag.

[skyking]

But ...but ...it has a pointed nose.

More of that "entemodynamics" I have spoken of in the past. If the bugs don't stick it must be a good thing

I agree. I still think a flat spoiler would look cooler, or at least strange in a striking way, but I bet you get better results with your Kamm ideas.

I am kicking around a kamm with a big wing..... or two. fun fun!

From Jaray's,Lay's,Kamm/Fachsenfeld's,Hucho's,and Buchheim et al's research,it's the only thing which has a track history of performance.
Darin's Honda proved that it's not a 100% solution though.I suspect that there was drag reduction,but the engine didn't react favorably to the mods.
Chrysler and Dr. Gino Sovran warned about gear-matching requirements.Hope you don't hit a snag.

My TDI's fuel specifics are so much better than a gasser, and I will be adding a 6th gear eventually. I don't imagine that being an issue, ever, at any speed.

[COcyclist]

Originally Posted by skyking

My TDI's fuel specifics are so much better than a gasser, and I will be adding a 6th gear eventually. I don't imagine that being an issue, ever, at any speed.

I believe our diesels are less sensitive to throttle position changes due to the diesel engine's lack of a throttle plate. Improved aero should only help efficiency since they simply add less fuel with reduced load and can run very lean compared to a gasser. That said, if you can do the 6 speed swap and keep the engine at about 1,800 rpm at your chosen highway speed that is the sweet spot for BSFC for the TDI. It's on my wish list.

[freebeard]

Back when I had the 1961 VW panel van, I thought about two Porsche duck tails, vertical on the sides, to create what I would verbalize today as a virtual plan taper.

More for directional stability than downforce, like a shuttlecock.

[kach22i]

Originally Posted by freebeard

Back when I had the 1961 VW panel van, I thought about two Porsche duck tails, vertical on the sides, to create what I would verbalize today as a virtual plan taper.

More for directional stability than downforce, like a shuttlecock.

I had a similar thought last year or two ago when those air-tabs on the side of vans first came out. Although it would be just the common Wickerbill sized Gurney flap all the around the rear edge.

[freebeard]

Once I'd hung around here for a while, I leaned more toward a rectangular 4" torus fed with the pumped engine cooling air, with louvers punched lengthways at the proper angle to form a Coanda nozzle on all four sides.

Today though, things are different. The news out of Manchester University:

The future of flight: plasma aircraft wings | News & Events | Manchester Metropolitan University

MMU Homepage»News & Events» The future of flight: plasma aircraft wings
The future of flight: plasma aircraft wings
Electrically charged field replaces mechanical flap


A prototype plasma wing with the distinctive purple electrical field

ELECTRICALLY charged plasma fields are being used to improve aircraft performance by generating lift in place of mechanical wing flaps and slats.

Tests show that plasma could be adopted to replace the actuator flaps on aeroplanes that help them to climb, descend and alter speed.

[kach22i]

Originally Posted by freebeard

The news out of Manchester University:

POSTED BACK IN 2011................four years ago.

Page 2
Why are many UFOs an aerodynamic, saucer shape?
Why are many UFOs an aerodynamic, saucer shape?, page 2

A DARPA sketch showing plasma edges....................

The plasma charge on the leading edge of the wing reduces the drag

How long before our cars start glowing blue?

[skyking]

Puddle lights? we don' need no stinking puddle lights!

[freebeard]

How long before our cars start glowing blue?

Purple? They've been preparing us since Tron, with the blue strip lights on everything.

[RedDevil]

I need plasma wings on my belly pan!
And spinner moon discs.