Toro Rosso STR6 Ferrari

[manchild]

There is no point in that if I understand your idea correctly- you would be pulling two parts of car together, while what you want is pulling whole car closer to tarmac.

No ground-effect but there are other benefits.

If you create low pressure zone between floor and sidepod's bottom, than you narrow the air stream, which means less turbulence, more air reaching coke bottle area and the diffuser.

Another benefit - if you position hot air outlet from the sidepods just after the lowest pressure zone (below sidepod, near it's end), that enables you to make sidepod inlet smaller since pressure within sidepod would be greater than pressure between foor and sidepod.

That would obviously reduce the drag and increase overall aero efficiency.

If it was up to me, I'd perhaps even consider adding at least partial endplate to create real tunnel and real Ventouri effect, and let hot air from sidepods to be sucked out in the zone where Ventouri widens but still has lower pressure.

[StrFerrari4Ever]

There is no point in that if I understand your idea correctly- you would be pulling two parts of car together, while what you want is pulling whole car closer to tarmac.

No ground-effect but there are other benefits.

If you create low pressure zone between floor and sidepod's bottom, than you narrow the air stream, which means less turbulence, more air reaching coke bottle area and the diffuser.

Another benefit - if you position hot air outlet from the sidepods just after the lowest pressure zone (below sidepod, near it's end), that enables you to make sidepod inlet smaller since pressure within sidepod would be greater than pressure between foor and sidepod.

That would obviously reduce the drag and increase overall aero efficiency.

If it was up to me, I'd perhaps even consider adding at least partial endplate to create real tunnel and real Ventouri effect, and let hot air from sidepods to be sucked out in the zone where Ventouri widens but still has lower pressure.

Email STR right away sir!

[matt21]

There is no point in that if I understand your idea correctly- you would be pulling two parts of car together, while what you want is pulling whole car closer to tarmac.

I don´t really get your point.
Assumed, that we generate some downforce by a venturi in the sidepod.
Why should we pull two parts of the car together?
The force is acting on the pod which is fixed to the chassis.

On the other hand, the flow from the channel could be directed towards the diffusor and beam wing.

[volarchico]

I don´t really get your point.
Assumed, that we generate some downforce by a venturi in the sidepod.
Why should we pull two parts of the car together?
The force is acting on the pod which is fixed to the chassis.

To create the downforce on the sidepod, you'd need a low pressure region below the sidepod. This same low pressure region also would result in a lifting force on the floor. That's what he meant by pulling two parts: downforce on the sidepod, lift on the floor.

[myurr]

I don´t really get your point.
Assumed, that we generate some downforce by a venturi in the sidepod.
Why should we pull two parts of the car together?
The force is acting on the pod which is fixed to the chassis.

To create the downforce on the sidepod, you'd need a low pressure region below the sidepod. This same low pressure region also would result in a lifting force on the floor. That's what he meant by pulling two parts: downforce on the sidepod, lift on the floor.

This would also lessen the effect of the underfloor where you are also trying to create a low pressure region.

[matt21]

Ok, got you!

But with some fine tuning it should be possible to achieve a low pressure which is somewhere between the value below the floor and the value on top of the pod.

Or could we use a high pressure in this area? But then it propably will create lift ad the side pod

Maybe it is a stupid idea and I should drop it.

[Blackout]

[BreezyRacer]

OK, maybe it's just an errant reflection but those strakes at the front of the sidepods now look to have inlets in them. Why? Maybe they are channeling the airflow thru the strake and outletting it at the floor to create an isolation along the side of the car??? EDIT: Nope, just a reflection ..

Also the floor is different, going back to the familiar side venting floor layout used by Red bull in 2009.

[amouzouris]

I don´t really get your point.
Assumed, that we generate some downforce by a venturi in the sidepod.
Why should we pull two parts of the car together?
The force is acting on the pod which is fixed to the chassis.

To create the downforce on the sidepod, you'd need a low pressure region below the sidepod. This same low pressure region also would result in a lifting force on the floor. That's what he meant by pulling two parts: downforce on the sidepod, lift on the floor.

This would also lessen the effect of the underfloor where you are also trying to create a low pressure region.

This wouldn't lessen the effect of the underfloor as the are between the sidepods and the floor might be low pressure BUT not as low pressure as the underfloor. So that area is pushing down the floor and the air above the sidepods is pushing the whole thing down. Also it improves flow on the diffuser and the beam wing.

[Twaddle]

"Still I ask myself if the steeply falling sidepods we see everywhere are really the optimum.. on their own they will definitively produce lift ...

marcush, I wanted to get a bit of discussion going on this because I started to doubt that it was the case when you consider the effect of the sidepods being connected to the floor. I posted over in the 2011 aero trends thread since it was getting a bit OT for here: viewtopic.php?f=6&t=9440&p=226521#p226521

[LotusF1]

"Still I ask myself if the steeply falling sidepods we see everywhere are really the optimum.. on their own they will definitively produce lift ...

f=6&t=9440&p=226521#p226521[/url]

why you say that? moreover is there an engineering side to your point because I think you are wrong...

[marcush.]

so you say the sidepod will produce downforce on its own due to its shape ? please explain.

[LotusF1]

if the flow stays attached yes, than the sidepod generates DF, more than a flat sidepod (part of the reason why RBR was as quick as BGP in 09 imo was due to the shape of their sidepods - that was their DD...) and on top of that the vector is also pushing forward - hence reducing drag...but thats my 2 cents...i dont think any team would keep something that doesnt generate DF on the car....

in 08 toyota had their beam in front of the rear wing that was effectively pushing forward, reducing drag....(Monza spec obv)...

[zgred]

[timbo]

http://www.flickr.com/photos/f1photos/5 ... otostream/

They seem to be the only team which uses the center 150 mm of diffuser.