This car is actually from 2023 😄. Rally1 WRC cars (2022 -> 2026) are not the first WRC cars with a lot of downforce. 2017 to 2021 WRC cars were even more extreme 😄. Thank you. It was a great video ! Edit : it's a 2022 Puma. Just the thumbmail is a 2023.
This would be one car that might perform better in yaw then straight on. Almost every high speed rally corner is taken with a little bit of yaw, even some high speed braking is taken with a little bit of slip. So things like the roof vent might not have as big of an impact downstream vs head on.
Great video! Your content makes cars become so much more interesting for car entusiasts. Keep doing it! Om a side note, these late WRC cars are beasts!
The wheels are feeding a lot of high pressure to the edges of the rear wing, it might be it's one saving grace. The wake coming off the wheel houses are high pressure so they divert the free stream air slightly up so it interacts with the rear wing edges.
I’m not sure how you pick which cars to test but I’d love it if you did a 1984-1991 bmw 3 series! I’ve got one and would like to do aero work either to make it more efficient for mpg on the highway or produce gt3 levels of downforce on the track.
Can you please show a simulation with vortex generators at the end of the roof with a squarebody vehicle and the effect they have on the wake and the Cd or Cl of the vehicle. For example effect of vortex generators and and rear window separation edges on bmw e91 🙂
I know you get loads of video ideas on the comments but the other day i thought it would be great to see a comparison between the Mercedes AMG A45 with and without the aerodynamics package. I saw one the other day and while it looks cool i did wonder how much of it was done just for looks and how much performance such aggressive looking aerodynamic parts actually added. It would be interesting because its not that they just put a big wing on it. The front lip is different, it has a different rear diffuser, side skirts and even some little canards.
What do you thunk would be the effect of yaw on the aerodynamics, particularly downforce, since rally cars usually have a high degree of yawing in the corners?
It would like make the downforce worse because the surfaces aren't contoured to that direction. However, for a regular car that is producing lift, it would generally improve it because the roof is less in line with the front of the car.
@@PremierAerodynamics Do you think the different pressures on either side of the car would have much of an affect when the car is in yaw (sliding in a corner)?
Very insightful video! Can you analyse a 2017 wrc rally car? Because those cars had more aggressive diffusers and more canards up front. It'd be interesting to know how these two cars differ.
@@PremierAerodynamics could you upload a google spreadsheet link with the df and cd rankings so we can see the updates and changes coming with new entries?
Thanks. We've got it on the list. We just need to figure out how to present it so that it will get views. As you can see, these videos have been getting fewer and fewer views. They're dying an ugly death. And each time they don't perform, it costs us money.
@@PremierAerodynamicsHe is not wrong. There are multiple missing components of the aero model. From the front moving back... Under the "beak" of the front lip of the hood, is the engine intake, so it is being fed high pressure air directly into the turbo restrictor. Additionally the from cooling inlet is directly below that, which feed into the engine bay, the engine bay has two large upper hood vents right infront of the A Pillar to manage that air out from under the bonnet. The front brake cooling ducts also flank either side of the front grill, And feed air into the wheel well to reduce pressure build up. Additional to the air from the hood vents around the A-Pillar, the wing mirrors are, quite literally, wing profiled, vertically oriented, and act as a barge board around that A-Pillar region, controlled the flow of air. I also have on reasonably good authority, that there is a vortex generated by these wing mirrors that feeds energized air directly into the rear hybrid cooling system duct, and also helps drove flow into the rear wing side scoops, and upper fender flare. Speaking of the hybrid cooling system, often missed, is that directly above the diffuser, is a cooling outlet fan for the Hybrid system. This fan is extremely aero profiled, and specifically integrated into the outflow of the rear diffuser, allowing for extension of the diffusers outlet, pressure recovery from the massive drag, and some minor interactions with the rear wing as well. I also have under reasonably good authority, that when the rear wing is lost on the cars, there is a "Maximum Cooling" option that can be selected from the cars control panel, that will allow for increased fan speed to help improve the extraction from the diffuser, to recover some of the lost downforce from the loss of the rear wing interaction. It is also worth mentioning that the rear wind endplates are contoured like those of an F1 car, and have their own unique and specific interactions. Likewise much of this cara aero is also designed with the intent of being sideways, so there are some specific interactions that only happen when the car is approaching at a broad side. Which does in many ways dictate the shape of the aero elements of the rear wing outside of the basic regulatory restrictions on size.
I wonder what diference it would make simulating the air going in and out of the engine bay, because it seems to me that isn't beeing simulated and i presume that would significantly incrase the drag. I could just bee spiting a load of bs but at least it seems to me like it isn't simulated
WIthout the rear wing the vorticity from the upper and lower wheels cancel out. The top half creating upwash and the bottom half creating downwash. What's more the unsteadiness of the wakes stack up and combine downstream, and becomes a steady gyroid, like the structurer left when vortex rings collide. ua-cam.com/video/XJk8ijAUCiI/v-deo.html
I've watched a few of your videos but have to say I dislike how authoritative you are when this is in fact still amateur aerodynamics that will definitely have flaws. Your models are not detailed enough to give good data, and would be more to get good indications. I do still hope you keep it up, these are good videos!
You should have done the Toyota. That car has the most efficient aero out of all of them by a long shot! You actually chose the worst car for this. lol Compare videos of the Toyota and the Ford and you'll see the stark difference of the rear aero.
now I'm interested in seeying how the legendary Suzuki Escudo Pikes Peak Special performs, that would be hella interesting
HELL YEAH
Thanks for the idea!
Definitely need a second gen GR86 and BRZ.
This car is actually from 2023 😄. Rally1 WRC cars (2022 -> 2026) are not the first WRC cars with a lot of downforce. 2017 to 2021 WRC cars were even more extreme 😄. Thank you. It was a great video !
Edit : it's a 2022 Puma. Just the thumbmail is a 2023.
Thanks, happy you liked it!
This isn't even 23, this is the 22 launch car, it didn't even have the same wing mirrors as the tanak car with the shown scale model
@@npne1253 yes you're right !
This would be one car that might perform better in yaw then straight on. Almost every high speed rally corner is taken with a little bit of yaw, even some high speed braking is taken with a little bit of slip. So things like the roof vent might not have as big of an impact downstream vs head on.
Possibly. It would be interesting to see in the future
Really enjoyed your video mate, keep it up.
Do you mind doing an aero analysis on the Volkswagen XL1, the supercar that can do 1L/100km
Thanks for the idea! We'll put it on the list!
I dont usually repeat, but I request again the new Prius because of the windshield
Thanks, we'll see if we can get a good model of it.
You should do a video on the lucid air would love to see how such a big car gets such a small drag coefficient
Thanks for the idea! We have it on the list!
About front hood, they are bleeding air through it. Radiators in front are angled upwards and have massive air channels that lead to openings in hood.
I always wanted someone knowledgeable to go through the wrc aero! Thanks🎉
Thanks! Happy you like them.
Great video! Your content makes cars become so much more interesting for car entusiasts. Keep doing it!
Om a side note, these late WRC cars are beasts!
Thanks. Yep, they're incredible.
great video, thanks for bringing us the content,
don't forget to do the Porsche 908LH as well😁
Thanks! It's on the list!
The wheels are feeding a lot of high pressure to the edges of the rear wing, it might be it's one saving grace. The wake coming off the wheel houses are high pressure so they divert the free stream air slightly up so it interacts with the rear wing edges.
That is a good point. Perhaps this abrupt termination is the best config they found for the rear wing system.
7:29 show some love to your rear wing 😂
Lol! Hope you did!
Great video, it would be cool if you analyse the other 2 WRC cars and figure out which one is the best aerodinamically.
Thanks for the idea! They're on the list!
I love these breakdowns!!!
Thanks!
It would be very cool if you did the Golf Polo R WRC. The rally car with the highest win rate.
Thanks for the idea! We have it on the list!
I’m not sure how you pick which cars to test but I’d love it if you did a 1984-1991 bmw 3 series! I’ve got one and would like to do aero work either to make it more efficient for mpg on the highway or produce gt3 levels of downforce on the track.
Thanks for the idea! We have it on the list!
I was wondering what you guys found the downforce coefficient for the Aston Martin Valkyrie was?
Sorry, no we haven't found that yet.
The 2019/2020 cars were aerodynamic powerhouses for WRC cars, they went mad on aero parts.
Yeah! They were real improvements!
Can you please show a simulation with vortex generators at the end of the roof with a squarebody vehicle and the effect they have on the wake and the Cd or Cl of the vehicle.
For example effect of vortex generators and and rear window separation edges on bmw e91 🙂
Thanks for the idea! We have some vortex generator ones coming up in the next few weeks.
I know you get loads of video ideas on the comments but the other day i thought it would be great to see a comparison between the Mercedes AMG A45 with and without the aerodynamics package. I saw one the other day and while it looks cool i did wonder how much of it was done just for looks and how much performance such aggressive looking aerodynamic parts actually added. It would be interesting because its not that they just put a big wing on it. The front lip is different, it has a different rear diffuser, side skirts and even some little canards.
Thanks for the idea! We'll put it on the list!
I added the oem front lip on my car, I'm excited to see if there is any difference in front downforce with my undertray
Wow! That's cool. Did you have to raise your car?
What do you thunk would be the effect of yaw on the aerodynamics, particularly downforce, since rally cars usually have a high degree of yawing in the corners?
It would like make the downforce worse because the surfaces aren't contoured to that direction. However, for a regular car that is producing lift, it would generally improve it because the roof is less in line with the front of the car.
@@PremierAerodynamics Do you think the different pressures on either side of the car would have much of an affect when the car is in yaw (sliding in a corner)?
Very insightful video! Can you analyse a 2017 wrc rally car? Because those cars had more aggressive diffusers and more canards up front. It'd be interesting to know how these two cars differ.
Great suggestion!
Please do a video about the Maserati MC-12. I think it'd be further interesting to compare it to the Enzo.
Great vid as always!
Thanks for the idea!
Did you add anything for the blown diffuser?
Nope.
Is it possible to simulate this under breaking conditions (leaning to the front) or under cornering conditions?
That's a good idea. We'll look into it in the future.
Do an Audi Auattro S1 E2
Crazy aero and it will be intresting to see if the aggressive wing splitter and wide body do much
Thanks for the idea!
Why did you remove cars from the aero ranking list? Do you have a google spreadsheet link we could view all on?
There are too many to fit on the screen, so it becomes cluttered.
@@PremierAerodynamics could you upload a google spreadsheet link with the df and cd rankings so we can see the updates and changes coming with new entries?
I wondered (and still is) when you make a video about second gen Prius moving at 650 kph. This is like 15% there.
Thanks. We've got it on the list. We just need to figure out how to present it so that it will get views. As you can see, these videos have been getting fewer and fewer views. They're dying an ugly death. And each time they don't perform, it costs us money.
@@PremierAerodynamics i believe in you guys
Hi, could you make a video tutorial which would explain how to run shch a simulation by your own ?
Thanks for the idea!
Do a Ducati MotoGP as next motorsport
Thanks for the idea!
Can you please do a 2007 WRX sti please
Thanks for the idea! We have it on the list!
maybe you could try a 60s f1 bathtub?
Thanks for the idea! We'll put it on the list!
Could you do the aerodynamics of the 2025 Automobili Estrema Fulminea & 2022 Mazzanti Evantra Pura v8?:-)🔥🇮🇹
Thanks for the ideas! We'll put them on the list!
Imagine the drag coefficient of Clarkson's Citroen campervan
Lol
This aero calculation is very inaccurate, because it doesn't take in to account all the vents and scoops that car has
What is the mass flow rate through them and how does that affect the aero?
@@PremierAerodynamicsHe is not wrong. There are multiple missing components of the aero model. From the front moving back...
Under the "beak" of the front lip of the hood, is the engine intake, so it is being fed high pressure air directly into the turbo restrictor. Additionally the from cooling inlet is directly below that, which feed into the engine bay, the engine bay has two large upper hood vents right infront of the A Pillar to manage that air out from under the bonnet. The front brake cooling ducts also flank either side of the front grill, And feed air into the wheel well to reduce pressure build up.
Additional to the air from the hood vents around the A-Pillar, the wing mirrors are, quite literally, wing profiled, vertically oriented, and act as a barge board around that A-Pillar region, controlled the flow of air. I also have on reasonably good authority, that there is a vortex generated by these wing mirrors that feeds energized air directly into the rear hybrid cooling system duct, and also helps drove flow into the rear wing side scoops, and upper fender flare.
Speaking of the hybrid cooling system, often missed, is that directly above the diffuser, is a cooling outlet fan for the Hybrid system. This fan is extremely aero profiled, and specifically integrated into the outflow of the rear diffuser, allowing for extension of the diffusers outlet, pressure recovery from the massive drag, and some minor interactions with the rear wing as well. I also have under reasonably good authority, that when the rear wing is lost on the cars, there is a "Maximum Cooling" option that can be selected from the cars control panel, that will allow for increased fan speed to help improve the extraction from the diffuser, to recover some of the lost downforce from the loss of the rear wing interaction.
It is also worth mentioning that the rear wind endplates are contoured like those of an F1 car, and have their own unique and specific interactions.
Likewise much of this cara aero is also designed with the intent of being sideways, so there are some specific interactions that only happen when the car is approaching at a broad side. Which does in many ways dictate the shape of the aero elements of the rear wing outside of the basic regulatory restrictions on size.
I wonder what diference it would make simulating the air going in and out of the engine bay, because it seems to me that isn't beeing simulated and i presume that would significantly incrase the drag.
I could just bee spiting a load of bs but at least it seems to me like it isn't simulated
Generally, it adds around 20-30 counts. So, for this car, about 5%.
Maybe simulate an F1 and Formula Student car to see the difference
Thanks for the ideas!
bmw e30 pls thanksss
Thanks for the ideas!
Can't wait for McLaren to drop the F1 & p1 successor tomorrow.
It'll be interesting to see what it can do.
I have a GT86 (same as the BRZ) with NO WING. Should I hug the car or not?
…currently raining so either way I’ll wait
Sure, but hug it around where the wing would be. Good call on waiting for the rain to stop.
WIthout the rear wing the vorticity from the upper and lower wheels cancel out. The top half creating upwash and the bottom half creating downwash. What's more the unsteadiness of the wakes stack up and combine downstream, and becomes a steady gyroid, like the structurer left when vortex rings collide. ua-cam.com/video/XJk8ijAUCiI/v-deo.html
That's an interesting point!
I've watched a few of your videos but have to say I dislike how authoritative you are when this is in fact still amateur aerodynamics that will definitely have flaws. Your models are not detailed enough to give good data, and would be more to get good indications.
I do still hope you keep it up, these are good videos!
Thanks for the view
most of cars you makes a video have so many obviously flaws, how do they don't see them
In what ways?
You always point out parts of the car that harm aerodynamics, like the roof and the beginning of the rear window that you mention in the video.
Some of the issues are constrained by the stylist who want a certain look.
You should have done the Toyota. That car has the most efficient aero out of all of them by a long shot! You actually chose the worst car for this. lol
Compare videos of the Toyota and the Ford and you'll see the stark difference of the rear aero.
Thanks for the idea!