For 2012: Nose Regulations

[Tozza Mazza]

Here is a post I made earlier on the RB8 thread, It's relevant as the regulations were released today, and here it can be discussed.

Up for discussion are the 2012 nose regulations, there implications, and possible 2012 nose designs.

2011 Design:


Very simple design, using a straight line underneath to continue the slope of the underside of the survival cell, which I'm fairly certain doesn't happen, but any curvature is slight on any noses of 2011 cars, so it'll do for a demonstration. Loads of room under the nose for air to pass, I'm unsure as to what the benefits of that are though.

Scarbs Design:


Whilst not exactly Scarbs' design at all, merely the shape he used on his blog to explain the 2012 regulations, I used the same survival cell shape, with the dash bulkheads in the same position as they are in 2011, and the front bulkhead at the highest it can be in 2012. This design has the lowest tip, the smallest area under the nose, and the largest area above the nose. I do think however with some clever shaping of the underside of the nose, we could see a design using this concept in 2012.

Piola Design:


A few weeks ago Giorgio Piola released a video explaining changes for 2012. He showed a nose looking like the one above. This is the only design I have down which is actually illegal in 2012. To make it legal it would have the lowest tip, and would have a really 'obese shape', as seen below. For this reason I doubt we'll be seeing it in 2012. (It's this way, because the front of the survival cell must be 275mm tall, even if the front is moved forward).


Table top Design:


This is basically the 2011 design, moved down 75mm, with some optimization, its the design I expect to see most of in 2012, but I could well be wrong.

N Smikle Design:

With under nose optimization, raising the tip, this is the kind of design we're likely to see next year, although probably a little less 'extreme'.

[wesley123]

I cannot understand what makes the Piola illegal compared to what n smikle did, the one n smikle came up wirh is essentially just the piola design flipped around.

[hardingfv32]

What are the proposed benefits of some of these odd looking shapes? What are your design targets?

Brian

[Tozza Mazza]

I cannot understand what makes the Piola illegal compared to what n smikle did, the one n smikle came up wirh is essentially just the piola design flipped around.

Effectively where the change takes place makes all the difference!



At the front bulkhead, the survival cell must be 275mm deep, and the max height must be 550mm above the reference plane. The Piola design is too thin at the front of the survival cell, so is illegal, N Smikles is thick enough, and isnt to high, so is legal.

[Tozza Mazza]

What are the proposed benefits of some of these odd looking shapes? What are your design targets?

Brian

These 'odd looking shapes' are simple ways of interpreting the nose regulations for 2012. The design targets are to explore the benefits of each I guess.

[wesley123]

Thanks for the explaination!

Miht be possible though to see a bit more rounded tubs on the top? this would allow the bottom to be a u shape(much like the ridges), by this you could create a tunnel under the tub as well as more area under the nose

[Tozza Mazza]

Thanks for the explaination!

Miht be possible though to see a bit more rounded tubs on the top? this would allow the bottom to be a u shape(much like the ridges), by this you could create a tunnel under the tub as well as more area under the nose

Interesting Idea, the Survival cell can also be curved too, I kept it basic, a few 'initial drawings'.

I could see that maybe happening, could help direct flow to where its needed too, like an upside down 'V' Nose.

[ajdavison2]

Why would they need an 'inverted V nose' though, surely the turning vanes used by RBR and some others would serve the same, if not better purpose of guiding the airflow.. unless your thinking of packaging reasons?

[wesley123]

the inverted V would in my eyes serve a similair function as the skirts. Add to that that such an tub would allow lower mounting points for the suspension arms.

[hardingfv32]

These 'odd looking shapes' are simple ways of interpreting the nose regulations for 2012. The design targets are to explore the benefits of each I guess.

How do we know the benefits of each style if you don't have any idea what the rest of the car might want?

As a staring point, how does the flow over the top of the nose effect the rest of the car? Can we make it simple and assume there is not too much spillage over the sides? Is the rear wing heavily effected?

Brian

[jordangp]

Miht be possible though to see a bit more rounded tubs on the top? this would allow the bottom to be a u shape(much like the ridges), by this you could create a tunnel under the tub as well as more area under the nose

So a twin keel you mean?

[wesley123]

would be better to name it that way yes

[FrukostScones]

So the front bulkhead can be 625mm high?

or if only 550mm from what comes the deduction?

3.7.9
No bodywork situated more than 1950mm forward of rear face of the cockpit entry template
may be more than 550mm above the reference plane.

Maybe this rfcet should be included in the drawings... im still puzzled.

[Tozza Mazza]

OK, this is why I am confused, in the 2011 regulations it had a 'changes for 2012' section. It said...

Changes to Article 15.4.4
...
No part of a cross-section taken at the line A-A may lie more than 550mm above the reference plane.

I assumed this had stayed the same, however, having just seen the 2012 regulations PDF, this 'change' has been removed!

I will ammend my drawings soon.

[WhiteBlue]

Thanks for the explaination!

Miht be possible though to see a bit more rounded tubs on the top? this would allow the bottom to be a u shape(much like the ridges), by this you could create a tunnel under the tub as well as more area under the nose

The tubs must have flat tapered surfaces between the front (A-A)and the dash (B-B) bulkhead. Minimum bulkhead sections are defined. Designers will not add to the minimum dimensions. This will produce standardized bulkhead sections on all cars and standardized shape between the bulkheads as compared to drawing 5 by the FiA.

If for some technical reasons protrusions are required they will be added to that minimum shape and will have the proper radii defined in the respective bodywork rules.

15.4.4 Referring to drawing 5 :
The external width of the survival cell between the lines B‐B and C‐C must be no less than 450mm and must be at least 60mm per side wider than the cockpit opening when measured normal to the inside of the cockpit aperture. These minimum dimensions must be maintained over a height of at least 350mm.

The width of the survival cell may taper forward of the line B‐B but, if this is the case, the outer surface must not lie closer to the car centre line than a plane which has a linear taper to a minimum width of 300mm at the line A‐A.

The minimum width must be arranged symmetrically about the car centre line, must be
maintained over a height of at least 400mm at the line B‐B and 275mm at the line A‐A. The height at any point between A‐A and B‐B must not be less than the height defined by a linear taper between these two sections. When assessing the minimum external cross‐sections of the survival cell, radii of 50mm at the line B‐B, and reducing at a linear rate to 25mm at the line AA, will be permitted.

Following the application of the permitted radii, the external cross‐sections of the survival cell between the lines A‐A and B‐B must, over their respective minimum widths, have a minimum height of 300mm at the line B‐B reducing at a linear rate to a minimum height of 225mm at the line A‐A.

The minimum height of the survival cell between the lines A‐A and B‐B need not be arranged symmetrically about the horizontal centre line of the relevant section but must be maintained over its entire width.
The maximum height of the survival cell between the lines A‐A and B‐B is 625mm above the reference plane. The minimum height of the survival cell between the lines B‐B and C‐C is 550mm.