USA FERRARI F40

Hi

Yes our rear spoiler works like the one on the Enzo as does it's front under tray tunnel spoilers in that they retract slightly as vehicle reaches VMAX.

If we are lucky enough to be able to build and race Ferrari P 4/5 Competizione it will of course have fixed aerodynamic devices as required by regulations and will have a large wing and other devices to maximise downforce.

Best

 

Amazing that this is all integrated and just goes to show the level of work done not only to a factory car but to your one-off. Learned something new! Thanks

Best of luck with this & really looking forward to it!

Cheers

 

Can anyone answer the questions I posed? Crickets. deafening

 

I'm sensing a beer summit is forthcoming.

Yes, what this situation needs is just a touch of alcohol.

 

2/d x 1/e x pie ?

 

Telling
and yes, most interesting

 

Ramaciotti did the wing in the tunnel at PF, not Materazzi. "Computer scans measured sections of pressures at various distances from the tail, processed by computer to produce a ...picture of slipstream...giving a very clear picture of aerodynamic behavior. See Supercars: Ferrari F40, p 20-21. 9 Photos of F40 in tunnel at PF with sensors. Further direct quotes from Ramaciotti are noted there.

http://ntrs.nasa.gov/search.jsp?N=4294876787&Ns=HarvestDate%7C0&as=false...at NASA Langley Research Center (in the mid 70's)... the philosophy of Richard Eppler was adopted, which is to develop a (theoretical) method ...to design airfoils for ...specific applications.

Note that this philosophy is contrary to the approach taken by the NACA and F. X. Wortmann (in the 1930's and 40's) . They developed catalogs from which aircraft designers could select airfoils for their proposed vehicles. This approach was necessary for the NACA because the theoretical methods of the day were too primitive to predict accurately the aerodynamic characteristics of an airfoil.

Wortmann employed singularity and integral boundary-layer methods (refs. 12-14) to develop a catalog of airfoils intended primarily for sailplanes (ref. 15). Because the theoretical methods he used were relatively crude, however, final evaluation of the airfoils was performed in a low-turbulence wind tunnel. Eppler, on the other hand, pursued the development of more accurate theoretical methods (refs. 16 and 17.)

Contributions to F40 thread for better-seems a point clarified. Glad I could help.
Best put by a GTO owner and friends:
http://www.youtube.com/watch?v=OSYuzwRsr48&feature=related

No beer-can't drink and derive.

 

Interesting and true.

 

One thing that those who fly high Sail Planes that use Wortmann airfoils hopefully learn is that while the LD is breathtaking sometimes 60/1, the stall characteristics are a bit nasty. These high LD airfoils stall at higher speeds and produce turbulence and drag that can be violent. This is especially important to keep in mind when banked as a banked stall can quickly lead to a flat spin and that's something you likely will not be able to come out of.

http://www.nasa.gov/centers/dryden/pdf/87977main_H-1231.pdf

This low speed stall turbulence can be ameliorated with fences and strakes as discussed
in post 4 here:

http://ferrarichat.com/forum/showthread.php?t=232922

That's another benefit of fitting Fences, better low speed aerodynamics and wing stall transition.

 

Ultimately Enzo, who delegated to Materazzi. PF did the body, and Ramaciotti did the project there. As the reference states, Materazzi was not present during body/aerodynamic testing or design.

Materazzi does projects, and subs things out. Otherwise, he'd be a renaissance guy who was a drivetrain (he was deeply involved with that), emissions, crashability, and styling/aerodynamicist. He has done work for Lancia, Ferrari, Artioli Bugatti, Adonis, Pagani to name a few. I don't recall him doing it all.

It is called "teamwork", and subspecialization. Do you paint the cars you restore, rebuild the engines/gearboxes, upholster them too? I doubt it. When we showed at Pebble, everyone had a job. Same with Ferrari.

The photos of Ramaciotti and PF tunnel, styling/aero mock-ups are in the book. I knew I had it at home, didn't have it at the office. Hope you have it in your library. I don't have a way to scan it, but it is readily available.

Wortmann wings were "pre-fabs" if you will. Eppler used mathmatical modeling and flow analysis to create individual wings. His methods were much better suited to the computer era, and took hold in mid-late 70's. Otherwise, you'd see a G IV (89 or so) and a F117 (88) with catalog "off-the-rack" wings.

 

http://www.ferrarichat.com/forum/showpost.php?p=138909085&postcount=2918, I'm surprised you forgot, it was only 48 posts ago.
I believe Aeroform did the autoclave pictured in your post.
Probably can find the supplier, suspect it was Eligio Re Fraschini S.p.A, but I can't keep my patients waiting. You know, or you wouldn't have asked.

Interesting, but back on topic of wing construction....
So did Nicola Materazzi do the styling, or defer to PF?
For that matter, do you do your own upholstery and paint?

 

http://www.youtube.com/watch?v=tFylQ6_1bgQ

 

Chain of command has nothing to do with the wing. I have actually better pics of the car in the tunnel, including one with rear spats. The wool tuft run is there too.

We can talk about composites when the wing question is answered. Not chain of command, cigarettes, starter buttons, or valve stem caps.

Finish the discussion at hand, since it is "proper" by your standards.

We can play trivial pursuit one item at a time. But I am interested in your comments on the autoclave- it was amongst the worlds largest in 86-87 IIRC.

Answer the big question, then we take turns Polite.

BTW, my patients are absolutely none of your business. Ever.

FYI I have an 8mo little girl, a former 25 week 660 gram premie dying from swine flu right now. She might go on ECMO http://en.wikipedia.org/wiki/Extracorporeal_membrane_oxygenation (Google it), and she is on HFOV http://en.wikipedia.org/wiki/High_frequency_ventilation with MAP's http://en.wikipedia.org/wiki/Mechanical_ventilation in 30's on 100% FiO2 and iNO at 20ppm http://en.wikipedia.org/wiki/Nitric_oxide. She'll be dead soon, and nothing seems to be helping.

This stuff is irrelevant. It is a passtime. So knock off the smug, superior comments about my patients permanently.

 

See book I referenced. 9 photos in it.
Decision on "type of wing" in your latest post is very different that what you stated yesterday about the wing.
I'd prefer to hear from PF. If he really mentioned using a "pre-fab" wing form, it is illogical that tunnel tests were done and wing modified. If it was, then it wasn't a Wortmann anymore. PF doesn't seem to have had project engineers dictate styling/aero inasmuch as the Scuderia let Luca or Jean dictate F1 aero. So EM from manager doesn't seem to be asking right person.
Also, if Enzo wasn't involved, aren't all those who use that as the hook as "Enzo's last hurrah" hopelessly deluded? Seems he had little to do with it if story is factual.

 

I'm going to be busy with some ICU issues.
Joe, it really requires a written acknowledgement from you about the patient thing.

We can call each other whatever. But DO NOT bring my (or probably anyone's) patients into any thread. Ever.

As I posted, I deal with ugliness and death every day. Looking parents in the eye and telling them their child may die. Did it twice so far this week.

So, I'm asking for a very specific, singular, unfettered posted response to this.

 

Don't hold your breath Lee. This request is paramount to one for an apology. It'll never happen. It is the singular item he has in his arsenal that he can go to which he knows will hit a nerve with you. Pull out the ICD 9. Explains everything.