Lotus E21 Renault

[Blackout]

http://i16.servimg.com/u/f16/14/79/55/26/mg_50810.jpg

http://i16.servimg.com/u/f16/14/79/55/26/racepi11.jpg

http://i72.servimg.com/u/f72/14/79/55/26/racepi10.jpg

[Blackout]

http://www7.pic-upload.de/23.02.13/f5uwo7h6txaz.jpg

[Joie de vivre]

The tunnel on RBR starts earlier than tunnel on E21. Due that RBR is much tighter at the rear. Kudos to RedBull.

[Blackout]

Made further comaprisons using the side view pic posted above and it appears that everything on the RBR 'starts earlier'... The E21 seems to be shorter, has shorter wheelbase and shorter sidepods. The RBR has samller tunnels. The ramp behind the exhaust have a steeper angle and merges with the floor while the E21 ramp is higher and leaves a step. It's definitely have a bigger volume.

[ringo]

The tunnel on RBR starts earlier than tunnel on E21. Due that RBR is much tighter at the rear. Kudos to RedBull.

You are assuming they have the same wheelbase...

[Donuts]

The tunnel on RBR starts earlier than tunnel on E21. Due that RBR is much tighter at the rear. Kudos to RedBull.

You are assuming they have the same wheelbase...

... and someone used to say: "Assumption is the mother of all f**k-ups!"

[westech]

The tunnel on RBR starts earlier than tunnel on E21. Due that RBR is much tighter at the rear. Kudos to RedBull.

You are assuming they have the same wheelbase...

... and someone used to say: "Assumption is the mother of all f**k-ups!"

You are a tipical donuts =D> =D>

[Steven]

A comparison

http://www.servimg.com/image_preview.ph ... u=14795526

For those people claiming that the RBR is so much better based on the above picture, one needs to consider a few things before coming to preliminary conclusions.

First of all, the left Lotus picture shows a part of the right of the car, while on the RBR the image shows exactly the left hand side (on the Lotus you can see the top line of the airbox). This may not be immediately obvious, but it tricks us into thinking that the RBR rear end is much narrower.

Secondly, the perspective is different.The Lotus picture is an almost perfect shot from above the car. On the RBR, you can clearly see one side of the DRS actuator, showing that the camera was not immediately above the car. This also leads into thinking the RBR is smaller, as the central tail funnel overlaps some of the bodywork.

Finally, please consider that both cars fit the exact same Renault engines under the hood of the sidepod. RBR have not shrunk the engine, although it could appear like it from this image.

[Donuts]

You are a tipical donuts =D> =D>

But jokes aside, I'm not the one having a disscussion about which rear end is tighter. What does it matter, there are clearly differnt philosophies between the teams.

PS. I thought the smiley is meant to say that it's not to seriously written... but hey, maybe that's just me.

[bhall]

Close-up of the airbox (brightened up a little bit)

Could the device at the bottom of the engine intake be used to somehow moderate, or tune, oscillation around the inlet so that flow into the DRD intakes is pulsed, which would increase the potency of the DRD's effect on the rear wing?

Here is a brief video of such oscillation. (Note: at supersonic speeds)

The following is from the abstract of a paper on pulsed flow control:

This analysis successfully demonstrated that short duration impinging jets had an immediate effect on attaching the flow, and a long-term effect decreasing overall drag determined from the wake size. Additionally it was shown that the orientation of the jet had a significant effect on the flow behavior, and the shape of the pulse itself.

Top-down view of what I have in mind.

[Blackout]

Interesting.

I can tell you which upgrades they will bring in the next test days:



: P

[Blackout]

The E21 by Pieczaro - Deviantart

[Blackout]

Last year's E20 nose slot

[beelsebob]

Oh dear god... You know, it's not like the teams invented driver cooling through the nose cone this year!

[xDama]

A comparison

http://www.servimg.com/image_preview.ph ... u=14795526

For those people claiming that the RBR is so much better based on the above picture, one needs to consider a few things before coming to preliminary conclusions.

First of all, the left Lotus picture shows a part of the right of the car, while on the RBR the image shows exactly the left hand side (on the Lotus you can see the top line of the airbox). This may not be immediately obvious, but it tricks us into thinking that the RBR rear end is much narrower.

Secondly, the perspective is different.The Lotus picture is an almost perfect shot from above the car. On the RBR, you can clearly see one side of the DRS actuator, showing that the camera was not immediately above the car. This also leads into thinking the RBR is smaller, as the central tail funnel overlaps some of the bodywork.

Finally, please consider that both cars fit the exact same Renault engines under the hood of the sidepod. RBR have not shrunk the engine, although it could appear like it from this image.

+100

Going a bit off-topic but a lot of people on this forum make assumptions and conclusions based on photography, but if the photos aren't 100% identical in terms of size and perspective, those assumptions can't be correct.