Aston Martin Valkyrie - Part 2 - Beginning and Aerodynamics

[@8power0]

I GIVE THIS CHANNEL A THUMBS UP ,,,, EVEN BEFORE I WATCH THE VIDEO . THAT'S JUST HOW GOOD THIS CHANNEL IS ............... THANK YOU SO MUCH FOR YOUR TIME !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

[@User-dd2xv]

Same here

[@wywiertarkowywator7516]

Caps😒

[@BSport320]

Thank you so much 😀

[@ronniet906]

Great educational video Martin, the detailed photos and your sequential color coding of the airflow really helped teach the management of aerodynamic flow above and below the car in a very concise fashion. Please keep this as part of your future videos where relevant. Vielen Dank

[@BSport320]

Glad it was helpful!

[@ergoproxy-gx2cq]

1:34 imagine if he did end up designing an lmp1 car. Wouldve been beautiful to see

[@arjun._.bbC6]

The roof scoop is a thing of beauty. An absolute Newey masterpiece. 10/10 for him for conceptualizing that. Great analysis. If it weren't for you, we'd never have learnt about this marvelous car.

[@BSport320]

You are welcome! I'm not sure if Newey was working on details like the roof scoop, but someone definitely spend a lot of time on this.

[@arjun._.bbC6]

@@BSport320 given the complexity and the possible efficiency, it's likely that it's a Newey thing. Only he can come up with something as marvelous as that.

[@dod_the_angel]

@@BSport320 I think he was. I remember him mentioning in an interview that he designed the intake to do all the things you said but also so it could control what I think he called the spillout of air when not on full throttle so that the air that doesn't end up in the engine or cooling other stuff is still used

[@arjun._.bbC6]

@@dod_the_angel What eactly is this "spillout"?

[@dod_the_angel]

@@arjun._.bbC6 if my probably rubbish understanding of aerodynamics serves me correct it's a portion of the air going into the intake that ends up being forced back out of the intake when the car is slowing down. That air is usually fairly turbulent and messy for the aerodynamics it passes over so newer designed two vanes on either side of the intake that effectively tidies up this air before it continues down the car

[@mosca3289]

I always learn something from these videos. Great job.

[@BSport320]

Glad it was helpful!

[@mtcuppers]

Never even thought about that roof scoop... Wow!

[@BSport320]

There are so many details on the Valkyrie you only get at the second look

[@CraigLandsberg-lk1ep]

Great video 😮 but was disappointed when it ended, i want more, but a lot of clear and concise information in a short time 😅 thanks so much to the Author... and now I'm watching it again 💚💚

[@ambergris5705]

Thanks, this helps understand better why this car is so special!

[@loganmarriott11]

Excellent assessment. Thank you

[@5riddikk]

Amazing assessment. Looking forward to the next one.

[@BSport320]

Glad you enjoyed it!

[@mj6463]

Let’s goooooooooo! Great work as always!

[@defnotatroll]

I wonder whether Newey and RBAT experience in designing the Valkyrie is what gave them a head start on porpoising and how to fix it

[@DWillis7]

It's possible, but Valkyrie uses active suspension anyway. Valkyrie AMR Pro doesn't and it porpoises a little bit, nothing significant though.

[@adamkerdi5076]

Newey was an in F1 when cars first started porposing back in the day so when it came back in present day he was the only person who was working on cars back in that time so he knew how to get around it

[@defnotatroll]

@@adamkerdi5076 indeed

[@juanpablorojas7734]

👏👏👏👏👏👏👏. Great analisis. Adrian Newey is another level.

[@raosiddharth4726]

Such an amazing channel honestly

[@BSport320]

Thank you very much!

[@User-dd2xv]

Your channel is a gift to me. Could you perhaps recommend which mechanical engineering schools in Sydney, Australia should go into aerospace or motorsport. I am a fan of Motorsports but also a fan of airplanes. I know if I go into aerospace, I can always do motorsport as a hobby.

[@HannyDart]

move to melbourne and go to monash. they also have a good formula student team there :) greetings from germany

[@BSport320]

I agree with Hanny. Monash is probably a good address in Australia. I still know them from my Formula Student time and met former members in various motorsport categories later on.

[@themiddleman9376]

@@BSport320 Hey B Sport, what do you reckon would be the top universities to study aerospace engineering in Germany, Austria, or the UK? Also, do you think I should take the US into consideration? Regards, V F

[@User-dd2xv]

And how about Aerospace engineering?

[@christinalloyd9566]

I worked in the design team towards the end of the project. It was a shambles. The car was way over time, way over budget, over weight and Aston Martin were seriously displeased. People were leaving all the time and you never knew if you would have a job one week to the next. Couldn't wait to leave!

[@BSport320]

Thanks for the feedback! I also got to know people of the design team and heard similar things. Good they finished the project and we have the car on the road now.

[@georgekerr8804]

Great info.

[@Jay-nk6dm]

Could you explain how the curved section of the floor in front of the rear wheels works? I guess its supposed to capture the vortex generated by the front wing, but why is that something that is wanted? Also, why are there cutouts in that circular area?

[@BSport320]

The front wing is creating an outwashing "Y250" vortex and if the rounded floor edge can catch this, it seals the floor, which means more downforce. The rotational direction of this vortex is important. The cutouts are there to push air downwards in front of the rear wheels to create higher pressure there and divert air around the rear wheel instead of hitting it. It's another concept F1 was using.

[@Jay-nk6dm]

@@BSport320 thank you for the response! Isn’t a vortex an area of low pressure? So doesn’t the vortex hitting the front of the rear tire work against the slots trying to force higher pressure air in front of the tire?

[@cademckee7276]

What’s with the trend of allowing flow infront of the rear wheel pods. Is it less drag by having that coke bottle shape or more downforce by having more flow over the diffuser increasing the pressure difference like in F1

[@BSport320]

The Valkyrie is also doing that. It usually helps to increase diffuser performance (downforce) if there is a decent flow on top of it. And it helps to blow air into the wake behind the car, which reduces drag. But creating more downforce with the diffuser creates more drag, so it depends on how it's done. Usually manufacturers choose to avoid it because it's a major packaging challenge in already fully packed cars.

[@lakeelmpine5351]

Fascinating breakdown on the Valkyrie project. Is it possible to calculate the drag coefficient of the road model, given its unusual aerodynamic profile?

[@jannis8000]

Amazing video thx!

[@adamcassimjee532]

I really enjoyed that Martin.

[@BSport320]

Glad you liked it!

[@fabianljungberg2328]

Your amazing ! continue with these interesting vids

[@BSport320]

Thanks! Will do!

[@cheswil__]

something I still don´t get about the Valkyrie is the cooling solutions, how is that v12 cooled? and where are the radiators mounted? how does the airflow work around those systems?

[@BSport320]

You could see it in Newey's sketch in the video: The Valkyrie has side pods with a vertically mounted radiator either side. The air can exit above the diffuser. So the cooling path is very similar to F1 cars.

[@Bourne246]

Newey's experience with this car made all the difference to win the 2022 championship

[@dewikusumawati6497]

Can you do a video about real frontal area,and it correlation with drag Because I hearing that for the first time now

[@Andrew-vx2ls]

Agree it would be useful. If I have understood correctly, aero folks are suggesting that when the basic front area is displaced, the additional turbulence creates drag (to the sides and above the car) comparable in effect to additional bodywork. If this area is filled with air to balance the pressures, the drag is reduced. Presumably curved sides to the car reduce the effect as well which is why the double curvature convex side windows of some cars (Cf. Costin, Scaglione) is a useful way of managing air flow if side wash is not used to this effect?

[@BSport320]

You basically want to avoid side separations like a European truck, that increases drag. An F1 car just produces as much outwash as possible to keep the centre clean because drag is only second priority. For a road car you try to reduce outwash to reduce drag. Probably stuff for another video...

[@Andrew-vx2ls]

@@BSport320 Understood. I think we can grasp the drag part, but the variations of pressure / directions of vortices are more tricky ;-)

[@deepangshumitra2401]

How To Build A Car is truly better than most of my textbooks

[@shewhomustnotbenamed2034]

who else could've commented that...

[@andrea-dg9fv]

Fantastica astronave stradale. Ad avere i soli la collezionerei. Bsport ? Sei un professore, complimenti.

[@BSport320]

Grazie Mille!

[@optimusprimevil1646]

beauty in meeting regulations

[@isleofauto]

Thank you so much for such great detailed explanation for this car. It's a very unique vehicle. I'm wondering if you have heard of any collaboration struggle among red bull, aston martin, Multimatic and Bosch, etc. I heard there was some fundamental, political chaos in this project apart from what you described with Nebula in your Part 1 video. I'm very curious about this development story. Thank you again!

[@CraigLandsberg-lk1ep]

This video is GOLD😅😅

[@mrle0719]

Amazing analysis as always I suddenly had a weird though, isn't a blown rear wing (or diffuser) some kind of anti DRS? What I mean is when the exhaust flow is highest, usually is when we want less drag and less downforce and when we want the most downforce is under braking and fast corners where little gas is applied. The only benefit would be corner exit Am I missing something ? Also what is the % gain we could realistically see from a blown diffuser/wing ? Intuitively it seems quite small

[@epitosu6461]

I'm not sure how it applies to the Valkyrie, but in 2010-2013 F1 cars with blown diffusers (same thing, but diffuser instead of rear wing) had systems in their engines to keep the exhaust blowing air even when the throttle is closed. It sounds amazing, try to search it up But nowadays, I'm not so sure how it works, both in the Vallyrie and modern day F1 where the trick exhaust system is banned. Sorry for the half answer

[@BSport320]

So there is an effect and it's higher the closer the exhaust is to the wing. The wing's effect on the diffuser is higher if the wing is closer to the diffuser. All being pretty close to each other on the Valkyrie should mean that the effect is a bit stronger here but only the people involved in this project could tell us hard numbers about it. And yes, you ware right, the stronger the exhaust flow, the more downforce, which is in situations we don't need it. So the Valkyrie can back off its second element of the rear wing. More on that in the next part...

[@leoa4c]

When everything else is equal, yes, a blown wing will create more drag. However, by blowing the wing, you can reduce its size and/or angle of attack which, in turn, will result in a net reduction in drag. It's difficult for me to put a percentage on gains because there are too many variables, and it is usually a compromise. A smaller exhaust nozzle will give you a higher velocity, but it will also restrict the engine. If you are very effective at blowing a diffuser, you then may have to compromise suspension kinematics, and so on... On a typical track, a blown diffuser will be worth at least a few tenths. The Valkyrie's wing will not be nowhere near that, but a gain is a gain.

[@exemch4826]

aerodynamics is so interesting

[@hassannaeem101]

Is there a reason why the Valkyrie can do with a diffuser without any strakes?

[@BSport320]

The typical 2 strakes to catch the rear tyre squirt seem to be unnecessary because the vortex gets caught by the lower outer diffuser edge.

[@Aero44]

@BSport320 Hi great channel! Behind rear tire diffuser has huge lateral expansion, how flow stay attached here? Why are tunnels so high from ground? (If gap is smaller pressure will be lower) Is flow inside tunnel vortex, does vortex flow sustain higher adverse pressure gradient ?

[@BSport320]

Thanks! There is not much problem to keep flow attached for lateral expansion. The wake of the rear wheels helps with that. The smaller the gap to the floor, the lower the pressure but also the more sensitive to ride height is the car, which is not good for a customer car. Large tunnels hold more air which allows for higher forces

[@Aero44]

@@BSport320 Why they send strong vortex into tunnels? Why larger air volume equal more downforce, if this air dont have low pressure than it is useless?

[@sebfettel]

Great car

[@raosiddharth4726]

Can you recommend some engineering books and books on motorsports?

[@BSport320]

2 books I can recommend are: Race Car Design - Derek Seward How To Build A Car - Adrian Newey Both are more hands-on and not too theoretical, which I like.

[@ricardoreis7298]

Hmm, you kinda forgot to put the link for the part 1 on the video description...

[@tekpic04]

Here is link to part one kzbin.info/www/bejne/rXXOfXqafLd9rc0

[@sayyedshoeb2929]

What is the frontal area of the Valkyrie

[@einautofan6685]

Der Valkyrie ist einfach das ultimative Tracktoy, das man wahweise auch auf der Straße fahren kann!😎👌

[@Xayuap]

it's like; now that I know I can start to like it

[@F1ll1nTh3Blanks]

Any chance of a dive into the track car?

[@BSport320]

If I cover the road car, I will also cover the AMR Pro

[@mattfarrar5472]

Go and look at Lanky turtle KZbin channel. I presume you already have but he has footage of the Caddy and Porsche 963 at Sebring!!

[@captain_context9991]

So its like an F1 car, but without the flat under-tray?

[@BSport320]

You could say that. The underbody is closer to 2022 F1 cars with its tunnels than to earlier F1 cars.

[@dmaharry7976]

Dude. You should be working at McLaren. They need u badly.

[@s-pracing8514]

Seems better than their F1 car

[@jotighe2]

this video is way too long, when it consists of nothing but still photographs. keep them under 5 minutes, or add actually video.

[@loganmarriott11]

Excellent assessment. Thank you