Toro Rosso STR9 Renault

[shelly]

Interesting to see that both toro rosso and sauber are starting with a double rear wheel strake. No one except redbull had it last year, it seems that the other teams have closed that small knowledge gap

[miguelalvesreis]

It's like I ordered it. That's one tight ass! The wide outlet just above the beamwing could even be intended to help blowing it.

Blowing with low density hot air? Cooling outlets don´t have the same energy of a exhaust. It will come, at max, with the same speed and surrounding air but with lower density!

The thermal bridge concept is one thing (and to be seen how efficient will prove to be!) but to blow a wing with hot air? Don't think so! Just my 2 cents

[Crabbia]

Honestly are you guys not seeing the fat engine cover? Or the huge gaping inlet above the drivers head?

Of course we see it.
But in my eyes it's a good trade.
The bulk in the lower middle section doesn't hurt nearly as much since air is turbulent in that area anyway and no meaningful aerodynamic device will suffer seriously from that bulk. The Monkey Seat might take a small hit but that's a crappy aerodynamic device anyway (terrible l/d ratio).
Bulk in the lower rear floor section in contrast will mess up the efficiency of your diffuser. The diffuser is the aerodynamic device with the best l/d Ratio, by order of Magnitude for that matter.
Even the oil cooler will only slightly disturb airflow to the central section of the rear wing. Again the least effcient part of it anyway.

Ok, care to explain the extra drag caused by the roolhoop inlet? Drag the will be well above the axles.
Care to explain why the ranault power unit needs that heat exchanger there in the first place?
Care to explain the much higher centre of mass created by shifting some of the heatexchangers to the roll hoop.

All things convineintly not considered in your post.

[miguelalvesreis]

Honestly are you guys not seeing the fat engine cover? Or the huge gaping inlet above the drivers head?

Of course we see it.
But in my eyes it's a good trade.
The bulk in the lower middle section doesn't hurt nearly as much since air is turbulent in that area anyway and no meaningful aerodynamic device will suffer seriously from that bulk. The Monkey Seat might take a small hit but that's a crappy aerodynamic device anyway (terrible l/d ratio).
Bulk in the lower rear floor section in contrast will mess up the efficiency of your diffuser. The diffuser is the aerodynamic device with the best l/d Ratio, by order of Magnitude for that matter.
Even the oil cooler will only slightly disturb airflow to the central section of the rear wing. Again the least effcient part of it anyway.

Ok, care to explain the extra drag caused by the roolhoop inlet? Drag the will be well above the axles.
Care to explain why the ranault power unit needs that heat exchanger there in the first place?
Care to explain the much higher centre of mass created by shifting some of the heatexchangers to the roll hoop.

All things convineintly not considered in your post.

Probably the oil heat exchanger. Anyway, it's always a trade-off.

[CMSMJ1]

^^ Air to air intercooler maybe - much lighter and able to be mounted up there for a smaller penalty?

[miguelalvesreis]

^^ Air to air intercooler maybe - much lighter and able to be mounted up there for a smaller penalty?

Too small to be the intercooler!

[beelsebob]

Why is the car the STR, if it's no longer Scuderia?

[Manoah2u]

^^ Air to air intercooler maybe - much lighter and able to be mounted up there for a smaller penalty?

Too small to be the intercooler!

ughh why the hostility

STR9-Renault described by Craig Scarborough

https://www.youtube.com/watch?v=ta1dlfaczFs

at 1:01 engine oil cooler inside roll hoop says scarbs

[henra]

Ok, care to explain the extra drag caused by the roolhoop inlet? Drag the will be well above the axles.

Drag will probably not the dominant issue this year.

Care to explain why the ranault power unit needs that heat exchanger there in the first place?

They put it there to gain ground estate at the rear (smaller sidepods) probably because they deemeed it less aerodynamically expensive in that area (dirty middle section)

Care to explain the much higher centre of mass created by shifting some of the heatexchangers to the roll hoop.

Not much to explain. Little bit higher CG. Should raise overall CG by 2-3mm.
As I said it's all a question of trade Offs.
Probably worth it. CG hasn't been considered a huge factor in the past years unless you're completely off.

All things convineintly not considered in your post.

From that last sentence I take it you were not interested in answers anyway.

[Blackout]

According to ScarbsF1, the lower roll hoop intake is for the engine (not ERS or G-box) oil cooler?! it must be a tiny radiator then.
But, in that case, why are the sidepod inlets that big ?

[Sebp]

Maybe they split it up, two or three way.

[patrik]

Why is the car the STR, if it's no longer Scuderia?

What are you talking about? Scuderia means "team" in Italian, and they are based in Faenza. It has nohing to do with Ferrari.

[motobaleno]

Honestly are you guys not seeing the fat engine cover? Or the huge gaping inlet above the drivers head?

Of course we see it.
But in my eyes it's a good trade.
The bulk in the lower middle section doesn't hurt nearly as much since air is turbulent in that area anyway and no meaningful aerodynamic device will suffer seriously from that bulk. The Monkey Seat might take a small hit but that's a crappy aerodynamic device anyway (terrible l/d ratio).
Bulk in the lower rear floor section in contrast will mess up the efficiency of your diffuser. The diffuser is the aerodynamic device with the best l/d Ratio, by order of Magnitude for that matter.
Even the oil cooler will only slightly disturb airflow to the central section of the rear wing. Again the least effcient part of it anyway.

there is also the rear wing maybe...
for sure it is a trade (otherwise we would have seen tight-high car for years...).
we will see tomorrow if it is a good one

[beelsebob]

Why is the car the STR, if it's no longer Scuderia?

What are you talking about? Scuderia means "team" in Italian, and they are based in Faenza. It has nohing to do with Ferrari.

No, Scuderia means "stable" in italian, and refers to Ferrari's horse.

[henra]

there is also the rear wing maybe...
for sure it is a trade (otherwise we would have seen tight-high car for years...).
we will see tomorrow if it is a good one

Oh I did mention the Rear Wing in my last parapragh. It will take a bit of a hit. But probably not too much since the roll hoop area is aerodynamically chaos prone anyway. It will go from bad to ever so slightly worse.

As you said, it is all a trade off. I'm not sure though, we will know tomorrow if it was a good trade for them. Too much different test programs and sand bagging to be expected to tell much from it.