Airbrakes on the Nissan R89C

[[SS]Ares]

Is it just me, or is there something weird happening above the frontlights on this nissan?

the backfire indicates that the car is slowing down, so are these things some sort of airbrakes?

 

[LoudMusic]

Disclaimer: I know nothing about this car.

It could possibly be something to give additional downforce as the car enters the turn.

 

[Dave A]

Every pic of that car I've seen has thoes up, my guess is they're for front downforce, but I don't know.

 

[skope]

those flames look awesome

 

[cudadude2]

more likly brake cooling ducts

b

 

[DeltaS4]

Nice picture!!!! where from is it?

they could be airbrakes just like on aeroplanes' wings.

 

[daan]

That's an R92cp and I don't know what they're for.

Moveable aerodynamic devices, such as air brakes, usually aren't allowed in motorsport.

more likly brake cooling ducts

How can they be if they deflect the airflow away from the wheel? The holes in the front either side of the main grill cools the brakes.

 

[VT]

more likly brake cooling ducts

b

The ducts on each side of the bottom of the bumper are the ducts for the brakes. I would agree that they seem to be some sort of airflap like NASCAR uses to increase the stability of the car when sliding so as to keep it from rolling. However, I would assume that in this case, they're used to increase the downforce on the front end of the car while under heavy braking or turning.

 

[cudadude2]

That's an R92cp and I don't know what they're for.

Moveable aerodynamic devices, such as air brakes, usually aren't allowed in motorsport.


How can they be if they deflect the airflow away from the wheel? The holes in the front either side of the main grill cools the brakes.

i thought they were further back on the fwenders,,, sorry to so upset you with my error. I'll endever for perfection from ths day forward

b

 

[skope]

Nissan R92CP

 

[Robin]

Has anyone seen the SLR airbrake working? I remember the GTR concept in GTC had an air brake that worked.......

 

[daan]

i thought they were further back on the fwenders,,, sorry to so upset you with my error.

I was pointing out how I thought you were wrong. I was not upset. VTGT07 agreed with me. Are you going to give him a very childish response too?

I'll endever for perfection from ths day forward

Good. You can start with your spelling.

 

[[SS]Ares]

That's an R92cp and I don't know what they're for.

How can they be if they deflect the airflow away from the wheel? The holes in the front either side of the main grill cools the brakes.

aahh how could i've not seen, the 89C has dual round headlights and the 92cp has single rounds!

 

[Homer_SS]

They look like adjustable flaps for downforce. But i dont think there adjustable "in race" because they would violate the rule daan has pointed out. I would guess they would adjust it for optimal downforce, as needed before the race. I highly doubt there cooling ducts. If they are then..........WORST ENGINEERED MOTORSPORTS CAR EVAR!

 

[inferno]

If not for the fact that they are on the front side of the fender I would say they were for keeping air pressure from building in the wheel well, but more than likely those are venting points for the air that passes through the radiator. Unless the radiator is in the back.

 

[VT]

It would make sense that the radiator is in the back because of not only the air scoop, but the fact that it is an mid-engine car.

 

[nickmp0wer]

i think a lot of mid engined cars have the rad in the front. the ultima me and my dad are building does

 

[VT]

i think a lot of mid engined cars have the rad in the front. the ultima me and my dad are building does

I dunno .. it was just a guess. Most the ones that I've seen have them in the back. And since it is a racing car, I would assume they would keep the radiator as close to the engine as possible, but I don't know. It just seems to make sense to me.

But going back and looking at the hood design, it seems the radiator may actually be in the front because of the scoops on the hood.

 

[flamingwonky]

Is it just me, or is there something weird happening above the frontlights on this nissan?

the backfire indicates that the car is slowing down, so are these things some sort of airbrakes?

It is no doubt jet boosters propelled from the sides to add stability during turns. The boost is surely then controlled to add pressure towards the inside. 💡

 

[Rue]

How about the Mitsubishi HSR? Has anyone driven that yet? That has huge airbrakes.

 

[McLaren]

I was pointing out how I thought you were wrong. I was not upset. VTGT07 agreed with me. Are you going to give him a very childish response too?


Good. You can start with your spelling.

Hey, daan, don't Nascars have those as well, but only used in emergencys, right?

 

[GRD-4-3L]

Hey, daan, don't Nascars have those as well, but only used in emergencys, right?

Those flaps on Nascars are only active when the car spins to prevent the car from getting airborne. They don't provide any downforce, they just disrupt the flow over the roof of the car so no 'lift' force is generated.

 

[bnommensen]

I think they are static, not dynamic like an airbrake.

An airbrake would make more sense on the rear axle to keep the
rear stable, since you don´t want it to become light. Have a look at McLaren F1 and SLR.

 

[RallyRacingFan]

Mitsubishi HSR-II Concept '89 has airbrakes both on the rear and the front. Not only that but there are two, on one each side of the car and when the car is turning, only the airbrakes on the inside of the turn are activated. If you have an HSR-II it is well worth checking out in replay. The car is competitive in the Professional Hall turbo races. I won 133 A-Spec pts using it at Tokyo R246 with less than great driving.

Another "car" with airbrakes is the Nike One. I know it isn't a real car but the model in the game clearly shows an active airbrake at the rear. Watch it on replay.

Here's a picture of a real McLaren car:
Mercedes-Benz SLR McLaren - Rear Spoiler - 1600x1200 Wallpaper

 

[Avenix]

They are an air break of sorts.... Let me explain.... as of most cars of this calibour , breaks and downforce are most important... (a well tuned engine is a given)


Viewing the picture I have given here (following the red line down the body) , you can see the path the air will take during movement.. accomplishing two purposes

1) after the air exits the front duct , it enters the rear duct and cools the rear breaks. This is important for the lasting time of the breaks as well as the efficiency over a long period ie. 8hour and 24 hour races. maybe not noticible in gran turismo 4 is break wearing... but this is highly noticible in race cars over extended periods.

2) one must notice the angle of the lower of the 2 tear wing, the air moving past and above would cause large downforce gains, and therfor better turning...


sorry for the run on, but this seems to be my take.

 

[jr93alty]

wow. this discussion is amazing. they are not air brakes. they obviously dont move since it was pointed out that its illegal and if they were air brakes then they'd work at every speed. since the velocity is squared in energy equations, u can see how stupid it would be to have these at speeds well above 100mph. this is part of the design of the car to produce a low pressure zone so that high pressure hot air can leave the wheel well. dont call this the dumbest engineering design ever unless youve thought it thru or u were part of the design team. there is no difference in removing heat and applying cooler air. everyone thinks u have to flow cool air over something to be effective but since heat is absolute and coldness doesnt even exist to an "engineer", this design im sure works fine. these cars are designed in wind tunnels, not your uncles garage. air doesnt just disappear, if u remove heat, cooler air comes from somewhere else to replace it. to sum it up, static air brakes would make no since.

 

[Omnis]

wow. this discussion is amazing. they are not air brakes. they obviously dont move since it was pointed out that its illegal and if they were air brakes then they'd work at every speed. since the velocity is squared in energy equations, u can see how stupid it would be to have these at speeds well above 100mph. this is part of the design of the car to produce a low pressure zone so that high pressure hot air can leave the wheel well. dont call this the dumbest engineering design ever unless youve thought it thru or u were part of the design team. there is no difference in removing heat and applying cooler air. everyone thinks u have to flow cool air over something to be effective but since heat is absolute and coldness doesnt even exist to an "engineer", this design im sure works fine. these cars are designed in wind tunnels, not your uncles garage. air doesnt just disappear, if u remove heat, cooler air comes from somewhere else to replace it. to sum it up, static air brakes would make no since.

now that was great. change since to sense and you might've hit the nail on the head. i dont know if you did that for humor though...and if so, thats golden.

anyway....i could kind of see how the design would channel the air through the front brake ducts. if the air is escaping out the back, then it would create a vacuum in the front. the design looks like it provides some downforce while allowing wind to escape as well. the weird part is that it is so far foward, that the air looks like it wouldn't have a smooth voyage. perhaps the air from the ducts enters the wheel well and starts a whirling cyclone motion before escaping from the top. they also might just be a place where the wheels can cool, or debris from the wheels can escape.

anyone email nissan or nismo or the race team about it? i will admit that i haven't read every post of this thread in detail, so please excuse me if i repeated anything mentioned before or whatever.

thanks. peace, lol.

 

[Omnis]

They are an air break of sorts.... Let me explain.... as of most cars of this calibour , breaks and downforce are most important... (a well tuned engine is a given)


Viewing the picture I have given here (following the red line down the body) , you can see the path the air will take during movement.. accomplishing two purposes

1) after the air exits the front duct , it enters the rear duct and cools the rear breaks. This is important for the lasting time of the breaks as well as the efficiency over a long period ie. 8hour and 24 hour races. maybe not noticible in gran turismo 4 is break wearing... but this is highly noticible in race cars over extended periods.

2) one must notice the angle of the lower of the 2 tear wing, the air moving past and above would cause large downforce gains, and therfor better turning...


sorry for the run on, but this seems to be my take.

let me get this straight....the HOT air from the front duct exits into the rear duct? i dont think so...

come to think of it....those flaps probably also serve the purpose of channeling the exiting air OVER the rear duct. i really dont think your line is even vaguely accurate of high-speed air travel.

this isnt perfect either....but i think it's more accurate. the yellow paths might be a little high though.

 

[sUn]

More likely it's something to do with aerodynamics.

 

[gman07]

It looks like they are there strictly for downforce, but i have a feeling that cannot be right. Looking at Omnis' diagram, though, i dont understand where that air is coming from (the stuff that comes out behind the flaps). It seems that it can't be for brake cooling, as the air exits before reaching the brakes. They wouldnt make sense as airbrakes either unless they were movable.