Red Bull RB8 Renault

[Just_a_fan]

@42

No, it wouldn't fill the tub with water in short order.

No, it's not there for some other purpose. If you think it is, then please provide a reasoned argument for what. how and why it works.

In order to use air that is entering through such a narrow gap you'd need to be using it almost immediately. You might use it as a switching signal for an f-duct style device, but where is said device and how are you getting this air to it? What is said device actually switching? And how? How is the switched air stream then being ducted to the device being affected? And have you considered pipe losses your theory? Sure, you can run a duct where you like in the car, but narrow cross section ducts are inefficient and lose pressure differential quickly and every bend in the duct also kills efficiency/PD.

Everyone looks for complicated methods / systems in these cars when they really ought to be applying Occam's Razor before trying to publicly develop such ideas...

[forty-two]

@42

No, it wouldn't fill the tub with water in short order.

No, it's not there for some other purpose. If you think it is, then please provide a reasoned argument for what. how and why it works.

In order to use air that is entering through such a narrow gap you'd need to be using it almost immediately. You might use it as a switching signal for an f-duct style device, but where is said device and how are you getting this air to it? What is said device actually switching? And how? How is the switched air stream then being ducted to the device being affected? And have you considered pipe losses your theory? Sure, you can run a duct where you like in the car, but narrow cross section ducts are inefficient and lose pressure differential quickly and every bend in the duct also kills efficiency/PD.

Everyone looks for complicated methods / systems in these cars when they really ought to be applying Occam's Razor before trying to publicly develop such ideas...

I take your point, but I fear that perhaps you've read too much into my post.

I posted some time ago that I thought that this "air inlet" may well actually be a blind alley, designed to form a "bubble" of high pressure air to allow the airflow over the nose to be smooth (look back, I mentioned hollow point ammunition for subsonic weapons).

I just feel that this "inlet" is not what it appears to be. I posit no suggestions as to what it might actually be other than the above.

Sorry if my post was misleading.

[hardingfv32]

May I assume everyone knows there were two different exhaust tip layout yesterday. Different helmet means different drivers, if so had the system displayed at the last test and one driver had something new for the race.

View the photos on the previous page. Is this nor correct.

Brian

[bhall]

If you think it is, then please provide a reasoned argument for what. how and why it works.

[With regard to the Sauber C31] I believe the step is a rear facing blown slot, to help the airflow attach to the flat chassis top. Inside the nose cone, there is a duct that takes high pressure from a slot underneath the nose and passes it up to the rear facing slot.

(Click to enlarge)


(Click to enlarge)

The RB8 design is an air dam(n) that works much the same way.


(Click to enlarge)


(Click to enlarge)

EDIT: And just to appease my vanity, I proposed this way back in early February.

[hardingfv32]

How in the world is any flow going to over power the flow coming into the letterbox area. If you were using a forward facing duct, the best you can get is a wash.

Brian

[bhall]

The air flow at the bottom is of much, much higher pressure and comparatively little is needed up top, where pressure is much, much lower, to have the damn desired effect.

Anything else, Capt. Incredulous?

[Adrian Newby]

[With regard to the Sauber C31] I believe the step is a rear facing blown slot, to help the airflow attach to the flat chassis top. Inside the nose cone, there is a duct that takes high pressure from a slot underneath the nose and passes it up to the rear facing slot.

(Click to enlarge)


(Click to enlarge)

The RB8 design is an air dam(n) that works much the same way.

I can vouch for bhall having this idea first, in early February, as he said.

[Nickel]

What are the chances the slot is actually for driver cooling? It seems like it's just a way to reduce the effective slope of the nose and peel away the air that would create turbulence over the beginning of the chassis bulkhead?

[bhall]

That slot is for driver cooling insofar as very few things cool a driver better than a champagne shower on the top step of the podium.

[Nickel]

That slot is for driver cooling insofar as very few things cool a driver better than a champagne shower on the top step of the podium.

Seriously though, I agree there is no doubt a benefit to it being there over it being in the nose tip under the current platypus rules, but crazy duct work? Look at the nose cone unmounted, it has no slot, the slot is in the bulkhead only. So maybe just gives better flow over the bulkhead by sort of making the transition step "disappear"?

[hardingfv32]

[quote="bhallg2k"Anything else, Capt. Incredulous?[/quote]

Is that necessary?

1) If we are talking RB, then the pressure is no greater above or below the nose. Can you demonstrate otherwise?

2) The flow below the nose must make two 90 deg bends losing 40% of is velocity. This flow is not going to make it out of the letterbox!

Brian

[hardingfv32]

What are the chances the slot is actually for driver cooling? It seems like it's just a way to reduce the effective slope of the nose and peel away the air that would create turbulence over the beginning of the chassis bulkhead?

You are absolutely correct, peeling away the air that would create turbulence over the beginning of the chassis bulkhead. Oddly they are they only ones that think this is necessary. It would not be the hardest think to sim with CFD or in the tunnel.

Brian

[Chuckjr]

Delete

[bhall]

[...] but crazy duct work? Look at the nose cone unmounted, it has no slot, the slot is in the bulkhead only. So maybe just gives better flow over the bulkhead by sort of making the transition step "disappear"?

The F-duct wasn't crazy?

A gentle air dam(n) would work just as well to eliminate the effects of that step.


And, Brian, I'm not answering your questions. Frankly, I just don't want to. Even so, the answers aren't exactly golden tickets; you'll have no trouble finding them on your own.

[hardingfv32]

And, Brian, I'm not answering your questions.

Ask a couple of valid questions and you go silent? I wonder why?

Brian