2010 F1 cars technical analysis (Part 2)

Red Bull surprised many by sticking with their pullrod rear suspension

Red Bull surprised many by sticking with their pullrod rear suspension

F1 Fanatic’s technical expert John Beamer continues his look at the 2010 F1 car designs.

The 2010 F1 testing schedule seems shorter than ever. With just 15 days of running across four tests it doesn’t take much to upset a team’s tightly packed schedule. Throw in heavy rain and the testing scheme goes out of the window – simulating long runs on the slicks just isn’t possible.

As a result teams will need to use the test in Barcelona to do more aero calibration and long-run simulation. Ferrari or McLaren may bring new aero parts but expect most teams to reserve their upgrades for the season opener in Bahrain.

The last tech instalment focused on the 2010 technical themes and then explored the launch car for the big teams. In this second part we’ll explore the remaining teams: Williams, Sauber, Renault, Red Bull, Lotus, Force India and Virgin. Before we begin it’s worth taking a few minutes out on the emerging trends.

Who’s in the lead?

In short it’s impossible to know, especially given the far greater fuel load variance than in past years. However, my looking at lap times across the longer runs it’s possible to work out who has a nose in front.

More so than previous years outright pace isn’t necessarily the critical performance element. Consistency is important and so is tyre wear. A car that works well on low and high fuel and is easy on its tyres is a better bet than one that can has extraordinary single lap pace.

In terms of consistency Ferrari seems out in front. The Scuderia has had more running that other teams and over long runs the lap times are impressive. McLaren isn’t too far behind the the MP4-25 seems slightly harder on its tyres than the F10. A long run comparison at Valencia showed the two cars equally matched for the first 30 laps or so but then for the last 8 or so laps of the run the Ferrari continue to improve its lap times while the McLaren fell away badly (on the same tyres).

Red Bull seems to be up there too although Mercedes is a few tenths off the pace. Ross Brawn put this down to weight distribution issues. The 2010 car requires weight distribution 1-2% back compared to the 2009 design and the Brawn engineers may have got the initial calculations wrong – although not disastrously so.

Weight distribution – a clarification

Those of you who avidly follow the comments may have noticed a debate between me and a few readers about weight distribution of the 2010 cars. It’s probably worth my clearing up the issue.

Ever since the advent of the Bridgestone control tyres in 2007 teams have had to run a more forward weight bias. The need was compounded in 2009 with the introduction of slick tyres. In essence moving to slicks gave the front tyre more grip relative to the rears. In order to avoid overworking the rear tyres weight had to move forward. The greater grip at the front was also a cause of oversteer, which is why 2009 cars were reputed to ‘suffer from’ excessive oversteer.

The 2010 regulations attempt to address the weight issue by making the front tyres narrower. Also the longer wheelbase helps. A longer wheelbase car results in weight moving back. The other issue with a long wheelbase is that a heavier structure is required so there is less scope for moving weight around.

The net effect of these changes is that teams still face a significant challenge with keeping weight distribution forward. However, the optimum weight distribution is expected to be 1-2% further back than last year.

Sauber

BMW Sauber Ferrari is quite a mouthful, isn’t it. But boy, the car looks sleek.

The 2009 BMW suffered acutely for poor aerodynamics because of the adoption of KERS. The bulky sidepods required for cooling the KERS unit prevented sufficient air getting to the diffuser. This was compounded when the double diffuser became standard issue. Allied to that was a woeful belief in how to best manage airflow around the front wheels as the team persisted with an ugly box-like endplate until the Singapore Grand Prix in September.

By contract the new C29 looks like a solid machine, albeit without any revolutionary design innovation. The vastly reduced budget will likely further hamper aero performance and on-going development.

Head-on the car looks stunning – it is a simple design with a high nose showcasing the tight sidepods with a heavy undercut. The philosophy is to ensure that as much air gets under the nose as possible to feed the floor and diffuser. The heavy undercut in conjunction with the bargeboards help channel air around the sidepods to the double diffuser. The coke bottle zone to the double diffuser is extremely tight, which again reduces drag although being too extreme in this area could lead to airflow separation.

The C29 front wing is suitably developed and is an evolution of the F1.09 from last year. At its core the team does have a very strong engineering department as confirmed by a competitive 2008 package. I wouldn’t be surprised if the 2010 car started off well but it will probably suffer in the development race.

Renault

One thing you can say about Renault is that it is good to see the car’s classic yellow and black livery back. Aerodynamically the 2010 car is as conservative as the 2009 machine was unwieldy. The nose is the most striking part of the car and not for its sleek aerodynamic look but rather for its heavy-set appearance. The R30 looks slightly more elegant than the R29 and the intent is to try to create a venturi effect below the nose that should provide downforce.

The launch front wing is interesting. Outside the FIA mandated central section the main plane is raised before tapering towards the endplates. This reduces overall downforce (the ground effect is reduced) but creates a more consistent device particularly when cornering and in turbulence.

Initial reactions post-launch were that the Renault was one of the shorter cars. As a result the bodywork doesn’t look as tight as some of the other teams – particularly Ferrari and McLaren. Although the Enstone outfit hasn’t released wheelbase dimensions if true it would account for the more bulky packaging.

The one advantage of a shorter wheelbase is that it allows better optimisation of weight distribution, which could be important as the car must operate over a wide range of fuel loads. In particular the sidepods look bulky with significant curvature at the leading edge which may induce lift.

The most innovative thing about the R30 is its rear wing. Renault has adopted an M-shaped wing. The M shape optimises for the angle of the oncoming air but could result in transverse airflow which hampers performance. No doubt other teams are running simulations at base to work out whether it is a direction worth investigating.

Williams

Strangely, Williams has decided to radically overhaul its car despite having a reasonably good offering in 2009 – particularly in the early part of the season. The question at Didcot isn’t initial pace but rather development speed of the car.

Williams has raised the chassis and now has the ubiquitous Red Bull-style v-nose to both reduce lift on the top of the car and increase airflow clearance between the tyres. In addition between the front tyres there is a snow plough device albeit different to the McLaren interpretation. The Williams version rises from the base of the car and is designed to channel air to the floor and feed the diffuser. It is hard to see and is less overt than McLaren’s.

The FW32 is a good example of how the 2009 regulation changes failed to curb the use of bargeboards and pod wings. The boards are considerably larger than they were last year and also feature a sawtooth shape to create vortices which smooth airflow around the sidepods and effectively seal the floor. The 2009 rules defined areas where bargeboards weren’t permitted. Car designers simply changed the length and configuration of the sidepods which resulted in flow conditions sprouting up in regions not covered by these black out zones.

The other big change for Williams is the switch to Cosworth engines. We won’t know until the first few races how competitive the Cosworth power unit is but given that the Toyota engine was one of the more underpowered units on the grid the Cosworth shouldn’t be a downgrade. The more pressing issue is likely to be fuel consumption given the unit has had little development for the last four years.

Red Bull

Red Bull RB6

Red Bull RB6 pictures

In 2009 Red Bull vaulted from mid-table to top of the pack based on some inspired Newey design work. The pull-rod suspension and high, slender, innovative v-nose gave the RB5 a genuine performance edge which, once integrated with the double diffuser, turned into an invincible package.

The RB6 is based on the same strong foundation which means it would is likely to be a contender at least in the early stages of the season. To the surprise of many Newey has kept faith with the pull-rod suspension systems. The advantage of the pull-rod is that it connects to the lower part of the chassis and thus allows a slimmer coke-bottle zone, which is good for rear downforce – both wing and diffuser. The disadvantage is that there is less space for the double diffuser. A closer look at the RB6 diffuser shows it to be far less intricate than the McLaren’s.

The new car has retained the v-nose – in fact the 2010 incarnation is a far more aggressive version. This allows the underside of the nose to be v-shaped which improves front wing performance and better feeds the bargeboards and floor with air that has been less disrupted by the tyres. The bargeboards are quite large helping to seal the floor beyond the sidepods as well as feed the diffuser.

At the rear of the car there is a odd shaped central exhaust structure. This will blow fumes over the rear wing and will impact the aerodynamics, often for the worse. Typically the acceleration variance means that it is hard to get consistent airflow from the exhausts over the wing so teams have shunned this solution.

The key challenge for Red Bull this year is whether it can out-develop McLaren and Ferrari. The Milton Keynes-based outfit did a great job against (an impoverished) Brawn team so going up against the big guns could be different.

Virgin Racing

The VR-01 is the first car designed entirely with Computational Fluid Dynamics (CFD). Nick Wirth’s track record with the technology has been nothing short of amazing but going CFD-only in F1 is a risk.

The correlation between computer, track and wind tunnel are all critical to designing and developing the car, and by relying on one technology and not having much track time the odds of success are small.

Still the car doesn’t look that bad and has a nice livery. Most noticeable is the very long v-nose, which is more U than V shaped. The purpose is the same – (1) to contain air on the top of the chassis which reduces lift and (2) to create more space between the tyres to increase front wing efficiency.

The other noticeable feature is the relative simplicity of the front wing – it’s almost BMW F1.09-basic. It has a very long chord section capped with simple endplates. There are none of the raised winglets that adorn the RB6 for instance. Given the criticality of the front wing to overall aero performance it would be a surprise not see an upgrade early in the season.

The sidepods start off with a reasonably heavy undercut but soon fill out aft. Usually the undercut continues to the coke bottle zone which helps floor efficiency. It’s one thing designing the car with CFD but optimising the ancillary components to hone the aerodynamics will take time to get right.

The first few rounds of testing suggest the VR01 has serious reliability issues – hydraulics has been a problem since day one and despite ongoing assurances from the team engineers have yet to be solved. Aero performance could be the least of Virgin’s worries – Branson’s 2010 F1 experience will be different to his 2009 experience!

Force India

The VJM02 was a good car with low drag characteristics that suited perfectly the low downforce configurations of Monza and Spa. The task for the Force India designers was add a shade more downforce so it could challenge across a broader range of circuits.

Naturally the VJM03 is an evolution of the VJM02. The look of the car is similar – nose style, pod wings with integrated mirror, front wing, shark fin, vortex generators. Like McLaren the team has shunned the v-nose preferring a lower drag flat-nose.

The integrated pod-wing-mirror, modelled on the F60, first appeared last year and has been retained. The pod wings help shape airflow around the sidepods to the floor by calming the air coming off the front wheel. Look at a raised front view of the car to see the alignment of tyre to podwing. The integrated mirror is a neat solution that reduces drag albeit at the extent of driver visibility, but who cares what is behind you when overtaking is so hard.

It’s an interesting coincidence that all the Mercedes powered cars have odd-shaped airboxes. Force India’s is mounted on four pylons, which in theory should allow air to flow out more cleanly over the engine cover. Given the dawn of a few new teams in F1 and the extension of the point system this expect the VJM03 to score a few points this year.

Lotus

It’s good to see the Lotus name and the yellow and green livery return to Formula 1 even if it is a very different team to Colin Chapman’s outfit. Still the team is well-funded and has Mike Gascoyne on board who has close to 15 years of F1 experience. Many pundits predict Lotus to be the best of new teams.

From the front the car looks a little like the launch version of the RB5 albeit without the v-nose. The high slender nose results in a wide gap between the standard section of the front wing and the lowest point of the chassis which helps funnel air under the nose to the bargeboards and floor.

The front wing also appears highly developed (far more so that the VR01) with a number of tiered winglets and some flicks on the outside of the end plates. The flicks on the endplates control the downforce consistency of the wing. Whether they add much downforce is debatable especially given the complex feedback loops between the wheel and the wing.

Going aft all similarities with the Red Bull end. The car seems extremely boxy. The pod wings are angular rather sculpted, the engine cover is flat and the sidepod undercut is shallow. The lack of undercut means that it is harder for the bargeboard to work properly – the pressure differential between the leeward and windward side is less resulting in smaller vortices rolling off the top and bottom. The flat engine cover is also more likely to induce airflow separation which means the diffuser and rear wing will work less well.

Unlike Virgin Racing at least the car seems reliable having notched up plenty of laps during testing. Scoring points any time soon looks a long shot given the level of development of the car.

Final thoughts

As you read this the final testing in Barcelona is coming to an end. The faster corners of the Spanish Grand Prix circuit mean we’ll get a better read on true aero performance.

The reality, though, is we won’t know which team is on top until Bahrain. Even then it will take a few races to properly judge performance.

Remember the dog that was the MP4-24? That car did well in Bahrain last year, struggled massively at Barcelona and Silverstone, and was winning races by the end of the championship. This is a snapshot of a development race that never stops.

Read more: 2010 F1 cars technical analysis (Part 1)

Advert | Go Ad-free

31 comments on 2010 F1 cars technical analysis (Part 2)

  1. C29 ‘I wouldn’t be surprised in the 2009 car started off well but it will probably suffer in the development race.’

    Hope you mean 2010. ;)

  2. Scribe said on 28th February 2010, 14:50

    Fantastic analysis there. Any possible updates on the aero improvements Ferrari and McLaren have brought to Barcelona?

    Who do you think is up for best of the rest? Currently my bet is Williams, an Force India behind them. You have to say that no car without sponsers has the budget to run a proper development race, Torro Rosso are too new to this, and Renault doesn’t look fantastically promising.

  3. For the record, Williams move from Didcot to Wantage… in 1996, so there must hardly be any question left over there.

    • Actually, they even are in Grove (well, just outside of Grove, which is just outside of Wantage), the full address being “Grove, Wantage, Oxon”. Iget things mixed up a bit more since I lived in Wantage when I worked there…

  4. Ned Flanders said on 28th February 2010, 16:31

    Great analysis! Although John refers to ‘Brawn engineers’ in paragraph 7, that could do with changing to Mercedes

  5. BMW Sauber- Ferari?

    i still don’t get it. why is there still BMW in the name? is BMW sponsoring?

    • Jarred Walmsley said on 28th February 2010, 20:09

      Because the name cannot be changed due to how late the team was taken over, I expect the name to change to just Sauber-Ferrari in 2011.

    • MEmo said on 1st March 2010, 0:49

      Haven´t you red the F1 news for the last months? They couldn´t change the name and Ferrari is providing engines to the new team, hence BMWSauber-Ferrari.

      • Sam said on 1st March 2010, 9:59

        They don’t want to end up like honda, with a car they built winning the title without their name on it :D

  6. three4three said on 28th February 2010, 20:10

    Great article with nice and detailed analysis. As a spelling and grammar nazi, it was frustrating to read with all the typos especially as it would only take a couple of minutes to fix the whole thing. As I said late in December, I gladly offer my services for proof reading any time.

  7. Patrickl said on 28th February 2010, 23:47

    “A long run comparison at Valencia showed the two cars equally matched for the first 30 laps or so but then for the last 8 or so laps of the run the Ferrari continue to improve its lap times while the McLaren fell away badly (on the same tyres).”

    Ehm, Valencia was the first test. Look at the last tests and you will see that McLaren/Hamilton pretty much got this covered. I’d say his race simulation today was even better than Massa’s.

    • John Beamer said on 1st March 2010, 19:20

      So the large fuel tank will push most of the major masses backwards so it will shift. Also teams have moved to longer gearboxes in order to optimise the DD

  8. Patrickl said on 28th February 2010, 23:51

    “The 2010 regulations attempt to address the weight issue by making the front tyres narrower. Also the longer wheelbase helps. A longer wheelbase car results in weight moving back.”

    Really? Doesn’t this depend on where you make the car longer?

    I’d say they moved the rear wheels back and thus they actually moved the weight forward.

  9. At last a considered opinion on the use of CFD only designing in F1.

    Also nice to see read someone who doesn’t entertain the “R30 is exactly the same as the R29″ fallacy that was given far too much credence on this site.

    Lovely article John, thanks.

    P.S. no Toro Rosso?

    • John Beamer said on 1st March 2010, 19:13

      Good point – err… perhaps I can refer you to Red Bull last year!!!

      • haha perhaps, I think there might be one or two similarities with this years Red Bull also. Do Torro Roso use pull-rods too?

  10. wasiF1 said on 1st March 2010, 1:47

    Do agree with you on many points.I think Sauber will be a team that may surprise many, not sure whether Renault will be on pace.Expect Lotus to be the best of the new team.Red Bull will once again fight with the big boys.

    Have you forgot Torro Rosso?

  11. Ferrari are going to shock the lot of you when they obliterate the field in Bahrain. It is my contention that the early test gave them the idea that they were considerably ahead of everyone else and since then they have not shown their hand. Mclaren will take 3rd and 4th and then its just guesswork from 5th on. If only the Iceman were still driving then we could get those great post race emotional talks!

  12. The Captain said on 1st March 2010, 19:55

    It looks like Red Bull may have put one over on us all. Seems the high exhaust won’t be a problem blowing over the rear wing since it was just stickers.

    http://f1.gpupdate.net/en/formula-1-news/229140/fake-red-bull-exhaust-outlets-exposed/

    • PJA said on 2nd March 2010, 10:22

      I think that is rather funny, putting fake exhaust stickers on the car to try and fool the other teams, I wonder if any teams did fall for it.

  13. Wade said on 2nd March 2010, 1:56

    John – I just surfed GPUpdate.net this morning, AND, were you aware the the exhaust pipes on the RB6 were indeed stickers and actually fake?!(im refering to those sitting high on the engine cover and forcing air over the rear wing). Well Sutton images photographed it really well. How does that now impact your analysis of the RB6 – im an Aussie and worship Mark Webber LOL! But, i guess in testing it hasn’t changed any of their times, but could be beneficial to how their diffuser works? Would love to hear your thoughts. Oh, and thanks for all the other thoughts you provided in this article – a great read.

    • John Beamer said on 2nd March 2010, 18:36

      Yeah that certainly makes a lot more sense. As you can see I was very surprised if that was the case as the variable exhaust speed makes it tough.

      Red Bull also has what appears to be a significant cooling outlet in the centre rear of the car, which will see warm air seep over the rear wing.

      Interesting McLaren seems to be experimenting with trying to stall the airflow over the rear wing to reduce drag (I suspect).

      Will be a little more in part 3 before the season kicks off

      • Yeah the whole McLaren/Sauber stalling wing thing is really interesting but has generally only made waves on the tech-centric F1 sites.

  14. Chaz said on 7th March 2010, 19:11

    Great post. Yet again very informative…

  15. pandi said on 4th May 2010, 15:43

    mm… i like it

Add your comment

Your email address will not be published. Required fields are marked *

All comments must abide by the comment policy. Comments may be moderated.
Want to post off-topic? Head to the forum.
See the FAQ for more information.