Indy car windscreen

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jjn9128
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Re: Indy car windscreen

Post by jjn9128 » Mon Feb 12, 2018 12:19 pm

Interesting interview with Laurent Mekies, of the FIA saftey group about the Indycar deflector/screen/shield.
However, Mekies admits the windscreen will "not necessarily" adhere to the same safety standards as the Halo as a different solution could also provide a different type of protection.

"One of the key aspects is to pick a load case – what are you trying to protect against? There is no absolute truth with that; nobody is wrong and nobody is right. You choose what you try to protect against, and after that you have to accept if something more than that happens it won't help, or not as much as is needed.

"We'll catch up to see where the items they tried puts them in terms of protection level. You might remember that we had ourselves scanned different protection levels. The shield itself we tried at Silverstone last year had a slightly reduced protection level, so it's a matter of finding a good compromise.

"It's very good that such an important player as IndyCar is getting very involved in this, and as I said we are working very closely with them."
Full article http://www.racer.com/indycar/item/14733 ... windscreen

Zynerji
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Re: Indy car windscreen

Post by Zynerji » Tue Feb 13, 2018 2:13 am

I imagine a very simple titanium bezel around the top loop of the indy screen, and fastened at the back end of the screen would add an immense amount of strength to this design. Something like a 10mm piece of channel stock that fits snugly would redirect an enormous amount of impact energy around the driver.

I'm sure the right people are moving this forward as we type these speculations.

J.A.W.
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Re: Indy car windscreen

Post by J.A.W. » Tue Feb 13, 2018 11:59 am

Zynerji wrote: ↑
Tue Feb 13, 2018 2:13 am
I imagine a very simple titanium bezel around the top loop of the indy screen, and fastened at the back end of the screen would add an immense amount of strength to this design. Something like a 10mm piece of channel stock that fits snugly would redirect an enormous amount of impact energy around the driver.

I'm sure the right people are moving this forward as we type these speculations.
Such a U-channel seating at the base of the screen would likely be a more useful addition, as the calculated
flex capability of the resilient 'plastic' may be compromised by such a metallic ad-hoc/add-on, up top, perhaps.
Sturmbannfuehrer Dr von Braun sez..
"Oberste Prioritat hat es Londoner Terror zu vergelten. Und danach, der Mondflug!"

Zynerji
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Re: Indy car windscreen

Post by Zynerji » Tue Feb 13, 2018 1:23 pm

A frame for the window to be held within is an ad-hoc addition? πŸ€”πŸ€”πŸ€”

J.A.W.
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Re: Indy car windscreen

Post by J.A.W. » Tue Feb 13, 2018 2:01 pm

Zynerji wrote: ↑
Tue Feb 13, 2018 1:23 pm
A frame for the window to be held within is an ad-hoc addition? πŸ€”πŸ€”πŸ€”
One added to the top as an afterthought, & sans recalculation of dynamics, yeah, for sure..
Sturmbannfuehrer Dr von Braun sez..
"Oberste Prioritat hat es Londoner Terror zu vergelten. Und danach, der Mondflug!"

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Re: Indy car windscreen

Post by Jolle » Tue Feb 13, 2018 2:12 pm

J.A.W. wrote: ↑
Tue Feb 13, 2018 2:01 pm
Zynerji wrote: ↑
Tue Feb 13, 2018 1:23 pm
A frame for the window to be held within is an ad-hoc addition? πŸ€”πŸ€”πŸ€”
One added to the top as an afterthought, & sans recalculation of dynamics, yeah, for sure..
And for added strength a bar between the top and the chassis... like... a halo, covered with a screen. And when rubber and dirt is a problem, take away the screen.

J.A.W.
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Re: Indy car windscreen

Post by J.A.W. » Tue Feb 13, 2018 2:21 pm

Jolle wrote: ↑
Tue Feb 13, 2018 2:12 pm
J.A.W. wrote: ↑
Tue Feb 13, 2018 2:01 pm
Zynerji wrote: ↑
Tue Feb 13, 2018 1:23 pm
A frame for the window to be held within is an ad-hoc addition? πŸ€”πŸ€”πŸ€”
One added to the top as an afterthought, & sans recalculation of dynamics, yeah, for sure..
And for added strength a bar between the top and the chassis... like... a halo, covered with a screen. And when rubber and dirt is a problem, take away the screen.
Or clean the screen, but do not add any needless metal framing - that really does block the driver's view..
Sturmbannfuehrer Dr von Braun sez..
"Oberste Prioritat hat es Londoner Terror zu vergelten. Und danach, der Mondflug!"

dren
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Re: Indy car windscreen

Post by dren » Thu Feb 15, 2018 12:35 pm

I don't know why we don't go to completely enclosed cockpits. It'd be both safer and better looking. The aero guys would even like it.
Honda!

NathanOlder
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Re: Indy car windscreen

Post by NathanOlder » Thu Feb 15, 2018 2:21 pm

You cant just close the cockpit and put a door on the side though, The survival cell would be weakened massively by doing this ? surely ?
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strad
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Re: Indy car windscreen

Post by strad » Thu Feb 15, 2018 7:33 pm

Or clean the screen, but do not add any needless metal framing - that really does block the driver's view..
????
Why not just have tear-offs?
.
Back to Adrian Newey's book: Their research showed the drivers only look straight ahead to the next corner and cross angle to the apex.
Is there something I'm missing with all this talk of cleaning? Seems straight forward and un complex.
Last edited by strad on Thu Feb 15, 2018 10:25 pm, edited 1 time in total.
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Re: Indy car windscreen

Post by djos » Thu Feb 15, 2018 9:36 pm

NathanOlder wrote: ↑
Thu Feb 15, 2018 2:21 pm
You cant just close the cockpit and put a door on the side though, The survival cell would be weakened massively by doing this ? surely ?
Fighter jets don't have doors, the canopy just lifts up. The same would apply to F1 cars.
The impossible often has a kind of integrity which the merely improbable lacks.

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Re: Indy car windscreen

Post by NathanOlder » Thu Feb 15, 2018 9:38 pm

djos wrote: ↑
Thu Feb 15, 2018 9:36 pm
NathanOlder wrote: ↑
Thu Feb 15, 2018 2:21 pm
You cant just close the cockpit and put a door on the side though, The survival cell would be weakened massively by doing this ? surely ?
Fighter jets don't have doors, the canopy just lifts up. The same would apply to F1 cars.
and when the car is upside down the canopy just lif....... oh crap.

or if you just have a smash in the wall and damage the hinging mechanism , the thing wont even open.
GoLandoGo
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roon
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Re: Indy car windscreen

Post by roon » Thu Feb 15, 2018 9:41 pm

NathanOlder wrote: ↑
Thu Feb 15, 2018 9:38 pm
djos wrote: ↑
Thu Feb 15, 2018 9:36 pm
NathanOlder wrote: ↑
Thu Feb 15, 2018 2:21 pm
You cant just close the cockpit and put a door on the side though, The survival cell would be weakened massively by doing this ? surely ?
Fighter jets don't have doors, the canopy just lifts up. The same would apply to F1 cars.
and when the car is upside down the canopy just lif....... oh crap.
FIA procedure is to upright flipped cars before driver exit or extraction.

AJI
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Re: Indy car windscreen

Post by AJI » Thu Feb 15, 2018 9:43 pm

NathanOlder wrote: ↑
Thu Feb 15, 2018 9:38 pm
djos wrote: ↑
Thu Feb 15, 2018 9:36 pm
NathanOlder wrote: ↑
Thu Feb 15, 2018 2:21 pm
You cant just close the cockpit and put a door on the side though, The survival cell would be weakened massively by doing this ? surely ?
Fighter jets don't have doors, the canopy just lifts up. The same would apply to F1 cars.
and when the car is upside down the canopy just lif....... oh crap.

or if you just have a smash in the wall and damage the hinging mechanism , the thing wont even open.
Has anyone seen tests of drivers exciting an inverted Halo equipped car? I can't imagine it's easy?

jjn9128
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Re: Indy car windscreen

Post by jjn9128 » Thu Feb 15, 2018 9:44 pm

AJI wrote: ↑
Thu Feb 15, 2018 9:43 pm
Has anyone seen tests of drivers exciting an inverted Halo equipped car? I can't imagine it's easy?