#F1 Forensics: Mercedes AMG WO5 Technical Launch Analysis

Brought to you by TheJudge13 Technical Analyst Matt Somerfield (SomersF1)

No shadow of a doubt, Mercedes were the most improved team of 2013.  The Silver Arrows upturn in form came as a surprise to some of the paddock as they often topped the time sheets come Saturday afternoon.  It’s been quite a journey for the Brackley based squad over the last few years. Following on from the Championship winning BGP001 was always going to be a difficult task, made more difficult by the cuts made to survive in 09 and restructuring that followed with the sale to Mercedes.

That gestation period comes full circle once more with a new set of regulations, key personnel on board along with investment in infrastructure likely to pay dividends. It will be interesting to see how the dynamic changes with Ross Brawn stepping aside and Paddy Lowe taking on the technical aspects of Team Principle, whilst Toto Wolff looks after the commercial aspects, all the time under the scrutiny of none executive chairman and F1 legend Niki Lauda.

The teams timing and confidence shown by Stuttgart in order to facilitate the changes may prove crucial, with perhaps the biggest and most pivotal change coming toward the middle of 2012.  The decision to invest heavily in the team not only inspired Lewis Hamilton to join the team but paved the way for new tooling and modifications to their wind tunnel to take it and production to 60% rather than 50%.

2013 was just the precipice in terms of the results that can be achieved by these changes. With the Coanda exhaust fully implemented in the WO4 and providing a better platform than the job done to place it on the WO3 mid season it provided their fans with some solace. The team also made big strides forwards with their Front Wing design providing much needed new impetus on a design that had been being used as an evolutionary platform since the 09 campaign.  Other key areas of the car saw decent development and indicates the team are heading in the right direction for 2014.

Having already released several teaser images ahead of the actual launch some of the key design features had been seen before the unveil.

Front Wing

The W05’s Front Wing is a refined version of it’s predecessor taking into account the loss in overall width (150mm or 75mm either side) the Main Cascade has been treated to an additional Vertical Strake to aid in turning the airflow around the upper outer quadrant of the tyre’s shoulder.  In the outer portion of the now split Cascade we see the team have once again installed an IR camera to assess the thermal properties of the front tyre.

Added to the larger Cascade we find a smaller one very much (aesthetically) like the one used on the McLaren. The Endplate features a slotted horizontal vane similar to curved version Lotus ran at one race last season.  This vane encourages a high pressure gradient against it’s lower side to force airflow out of the slot, this undoubtedly helps the region turn airflow outbound.

Nose

Mercedes have taken a similar route to Ferrari in their adoption of a high chassis and step from the nose with a graduated rearward/inverted slope to the main section of the nose.  However in order to gain more space between the Mainplane and Nose tip they have used the work around in the rules similar to that of Lotus who presented their Sabretooth before them.

The nose has been made with 2 hanging pylons in order to meet the 185mm nose tip height and 9000mm2 cross section at 50mm behind the tip regulations, with one side longer than the other but the opposing shorter side flanked by a Vanity Panel.  Slighty rearward of the noses hanging wider pylons we find the much narrower connecting pylons which arc backward to maximise space under the nose.  Like Ferrari the team have utilised the mounting of the FOM cameras to glean a small aerodynamic advantage, arc’ing bodywork from the nose over to the mounting points.  This adoption reminds me of the ‘Elephant Ears’ the team used back in the Honda days.

Sidepods

At the front of the Sidepod the inlet seems relatively small compared to the McLaren running the same Powerunit, whilst the team have chosen to run the same triangular cockpit strake ahead of the pod as last year.  On top of the Sidepod we find two Vortex Generators with opposing designs looking to change the airflow in different ways.  The Sidepod Airflow Conditioner is doglegged like last years design in order accentuate the Sidepods inlet profile and allow maximum airflow around toward the coke bottle.  Cooling from the Sidepod is taken care of with an outlet ahead and inline with the Suspension pickup allowing space underneath for the airflow to cut around into the coke bottle..

Roll Hoop

The team have worked hard on maximising the undercut which allows a cleaner flow of air to the rest of the car, mounting the construction spars in a lent backward orientation encourages the airflow to pass over the engine cover aft of it.

Engine Cover

Featuring a Shark Fin to meet with the dimensional regulations we also find a pair of outlets at the base of the fin which undoubtedly aid in the targeting of the exhaust gases exiting behind it.

Rear Wing

Mounting the rear wing for all the teams this year has been a decision based process of strength over aero, the loss of the Beam Wing has meant that teams either make their Endplates more rigid or run with centralised mounting pylons.  Mercedes have decided to go with the latter option and likely because they have decided to utilise serrations in the Endplates lower rear section. This is a departure for the team who have failed to follow the lead of other teams over the last few seasons in using Trailing Endplate Strakes.

The team have retained the leading edge tyre wake slots they used on the W04 but have moved them much closer to the leading edge and run them much lower to the bottom of the Endplate.  The catalyst for the move coming from the serrated/fanned trailing sections of the Endplate which will of course aid in creating upwash, something that will be sorely lost along with the Beam Wing.

Diffuser

The Diffuser seems to have a very thin U section in the central portion of the Diffuser which collates airflow from the upper surface of the floor ahead of it and uses it to enhance the Diffuser (Dare I say it very much akin to the DDD approach, but obviously no holes within the surface of the floor).

Exhaust

Initially it seems to be a fairly rudimentary approach when consider some of the other more complex looking designs around that area but the team could have other components in the pipeline with this less complex arrangement used for initial testing.

Floor Treatement

Ahead of the rear wheel we can see that Mercedes have retained the tyre squirt slot that the W04 ran but the Vertical Strake inbound of it has been straightened with it’s predecessor having been arched.

Of course this an early look at the car and so any additional images/info that becomes available will be posted ASAP

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9 responses to “#F1 Forensics: Mercedes AMG WO5 Technical Launch Analysis

  1. Hello Matt, I thank you for your detailed analyses. I read them all, and try hard to understand, but, with no more understanding of the aero situation other than how an aerofoil gets a plane off the ground I’m fighting a losing battle… so… and this is no criticism of you… I wonder whether that is all it takes to design a GP car these days…
    Apart from occasional mentions about ‘pull/push’ suspension very little seems to be said about the other aspects of GP design…
    For example… could someone like Newey take, say a Caterham and, without changing anything else, just clothe it in new aerodynamics, and put the team in the Top-3…
    Another example: I sort of understand suspension design but, with so little suspension movement these days, I can’t see why a ‘push’ or ‘pull’ system makes much difference. To my eyes they might just as well remove the springs altogether and allow the ‘wishbones’ to just flex…
    Sorry to be a bore – but I will keep reading your nicely assembled articles – for inspiration…

    • Hi @BlackJackFan

      Apologies for the late response but as you can imagine I’m somewhat busy at present…

      In terms of taking Newey and placing him at Caterham, in the short term no it wouldn’t work. In the long term maybe, but he’d need the right people around him (mainly to reign him in) and pots of money for the right infrastructure. Ideas don’t always = performance… it’s how you and your team implement them.

  2. It would seem that LouLou’s front wing has catastrophically refused to be associated with what is probably the best-looking nose going around Jerez right at the moment. The rest of the cars have no chance.

    • hehe ouch! 😉

      I haven’t read the launch analysis (of either the car, or the wing! lol) but the W05 is definitely the best looking car on the 2014 grid.

      But which is the worst? STR or Caterham?

  3. And although Hamilton “stalls” the engine (or at least it dies) in this video (short) you get great audio, lots of growling and hissing! Check it out:

    • I’ll try and get some audio of all 3 engines tomorrow -assuming the Renault doesn’t short shift and run under 10,000rpm all day.

      There is a huge difference between the Merc and the Ferrari.

      The former spits, barks and splutters – the latter whirs and whistles and is very smooth in its transitions….

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