Having missed the first pre-season test in Valencia, Red Bull arrived to the 2nd test in Jerez and launched the RB6 in the pitlane. Rob Marshall, Adrian Newey, Sebastian Vettel, Mark Webber, Christian Horner and Peter Prodromou stand alongside their 2010 challenger.
The RB6 was an evolution of the teams 2009 challenger, which finished the season strongly taking the last 3 victories. Changes in the regulations for 2010 meant that refueling was banned, which increased the length of the cars and would clearly have an impact on chassis dynamics. The double deck diffusers that caused controversy in 2009 were cleared for use and would be refined around the teams usage in the previous season.
A full technical image gallery from the three tests attended by Red Bull can be found here: SomersF1 - Pre-season test RB6 technical image gallery. The second test was the scene of a new innovation from Red Bull's rival McLaren, codenamed RW80 but latterly dubbed as the F-Duct by the media, it was but one area of development in a season that would push teams to their limits. Meanwhile, Red Bull had an ace of their own hidden up their sleeve...
At the last day of pre-season testing a new exhaust was fitted to the RB6. The cheeky scamps even fitted a sticker in roughly the same position as the old one to try and fool onlookers.
Circled in the images above (left) the old exhaust sat just below the upper rear wishbone, which was also amended. The lower position (right) was the first iteration of this new incarnation of the exhaust blown diffuser.
RB6 from above, you can see where Red Bull applied the stickers on the upper surface of the bodywork, whilst below you can just make out the metallic inserts used on the exhaust exits. |
Above: The RB6 exhaust outlet up close, taken in Bahrain |
I've highlighted the changes in the images above. As we can see the cooling outlet (purple) was enlarged to deal with the additional thermal output of the engine. The diffuser was amended, with the boat tail adjusted to allow the area around the crash structure to be opened up, increasing the secondary diffuser deck size. An opening also appeared (below), that would allow flow to move from outside the coke bottle into the secondary deck, something that the placement of the exhaust would have particular bearing on.
The exhaust plume (red) is highly energetic so helps to pull surrounding airflow, which is often slower moving, along with it. As you can see the intent was to direct the plume at the opening, which would help to draw the airflow through the upper diffuser deck. Meanwhile some of the plume would envitiably spill the other side of the opening into the outer diffuser channel, energising it too.
Underside of the RB6 shows how the team had maximised the double diffuser inlets for 2010. http://www.racecar-engineering.com/articles/f1/f1-2010-european-gp-technical-updates/ |
Whilst on its own the exhaust placement provided the team with additional performance it was their work with Renault that allowed them to maximise it. Ordinarily the problem with using the exhaust to energise the diffuser is that the flow is inconsistent, as coming off the throttle would mean the exhaust plume dissipates.
Exhaust blowing was not a foreign concept to Newey, who'd been using it to improve performance for decades |
A look at the development of the RB6 as the 2010 season unfolded.... (Please note the gallery links beneath each races header image)
Round 1 - Bahrain
Full image gallery from the Bahrain GP - http://www.somersf1.co.uk/p/techf1le-red-bull-rb6.html |
Having taken pole in Bahrain, Vettel led the race comfortably until a problem with the Renault engine curtailed power. It was latterly diagnosed as a failed spark plug, which reduced the engines overall performance, with the German having to take 4th place. Meanwhile, Webber finished down in 8th having recovered from what seemed like an oil leak early in the race.
The damaged spark plug may have been the first indication of what Red Bull and Renault were doing in terms of blowing off throttle, a topic I'll cover more extensively later.
Round 2 - Australia
More trouble followed in Australian when having locked out the front row of the grid, Vettel had issues on lap 25 and retired from the race. Initially blamed on a brake failure but latterly determined to be a problem with the securing lugs. Meanwhile Webber had his own issues which saw him finish down in 9th.
Full image gallery from the Australian GP can be found here: http://www.somersf1.co.uk/p/techf1le-red-bull-racing-rb6-round-2.html |
The events that unfolded at the Australian GP led to the FIA issuing a change to the regulations, with outboard mirrors, that teams had taken to mounting on the sidepod airflow conditioners, were to be excluded from the Spanish GP, insistant they must be mounted from the monocoque instead.
More controversy was brewing too, as rival teams suspected that Red Bull were using a ride height device to achieve a different performance offset between qualifying and the race. Pictures had surfaced that showed the RB6 with a different attitude (rake) between the two sessions, with many coming to the conclusion that this provided the team with a qualifying boost.
The Red Bull mechanics crowd around the back of the RB6 on the grid to make life difficult for anyone wanting to see what was going on at the back of the car, namely the diffuser. For a full image gallery http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-3-malaysia.html |
Red Bull opened their account in Malaysia with Sebastian Vettel taking the win, whilst Mark came in just under 5 seconds behind his counterpart to clinch 2nd place.
As previously mentioned the wing mirror position must be amended by the fifth round in Barcelona, as such, Red Bull trialled their intended position in China - Full image gallery for the Chinese GP - http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-4-china.html |
Vettel at the wheel of the RB6 - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-4-china.html |
Bouyed by their result in Malaysia the team had more to be pleased about when they locked out the front row in qualifying. The race didn't quite match their aspirations though, with Vettel finishing in 6th and Webber in 8th.
The Chinese GP saw the teams first major design alterations of the season with a new front wing and turning vanes put to use.
The wing introduced several changes with perhaps the most visceral coming from a change in the upper flap shape, something that continues to feature on even todays challengers. The change in philosophy to the upper flap is also matched by the change to the mainplane to neutral section juncture. This is important as it changes how the the two surfaces create and shed a vortex that can be used to control other aero structures downstream. The upper flap geometry change was matched by one to the mainplanes upper tier too, with the slot running from the neutral section to the mainplane arc being retained.
The new L shaped turning vanes which coincided with the front wing update for China are highlighted in green in the image above.
Sutton Images captured this rather delightful image of the RB6 during preparations for the Chinese GP. It gave us the first real glimpse of the torturous exhaust pipework required to place its exit just above the floor, with the team clearly working hard to retain the requisite primary lengths so that power wasn't vastly curtailed.
Round 5 - Spain
Round 5 was held at the Circuit du Catalunya as F1 moved back to Europe for the first time - Full image gallery for the Spanish GP: http://www.somersf1.co.uk/p/blog-page_15.html |
A return to Europe usually heralds a significant stage in the cars development, with teams able to ship much larger components more easily. NB. In recent seasons this has abated a little, as teams are able to 3D print some elements on site and we have even seen them make ad-hoc changes to larger components by cutting and shutting them.
The RB6's exhaust design was amended significantly in Spain, with the bodywork surrounding it and the sidepods shrunk, changing how the airflow passed around them toward the double deck diffusers window in the coke bottle region.
Meanwhile, the team added a tyre squirt hole in the floor ahead of the rear tyre (circled) which helps to shape the wake shed by the rear tyre and ordinarily impinges on diffusers performance.
Round 6 - Monaco
Mark Webber rides the kerbs at the chicane. Full image gallery for the Monaco GP - http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-6-monaco-gp.html |
The team had a new rear wing mainplane available in the principality collating airflow, which would ordinarily separate owing to the shark fin. And like the Y75 slot above, displaced it to the rear surface of the wing, as the hollowed out wing created the effect of a third full span wing element, improving efficiency.
You'll note that the shape of the beam wing was also modified in order to improve rear downforce, with upswept outer sections and arrow head central section improving the aero connection between the rear wing and diffuser.
Round 7 - Turkey
The scene of the accident, as Webber and Vettel collide. Full image gallery - http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-7-turkish.html |
The team continued to pursue more performance with gusto, as several new parts were made available for evaluation. A new front wing (above, upper) was used by both drivers and saw a change to how the wing elements were distributed. The new wing utilised a full length mainplane flap, whilst the number of flaps was increased to two, albeit with shorter chord lengths. This change also required a change in the endplate design, with an arch added to the leading edge and the slot moved rearward to assist with the turning of airflow around the front tyre and airflow distribution over the flaps.
Having revised the sidepod geometry in Spain the team arrived in Turkey with new airflow conditioners. These frame the airflow around the front of the sidepod, dealing with both the wake of the front tyre and how flow moves around the undercut. A slimmer design was employed, demoting the previous cricket bat style appendages to the parts bin.
The exhaust configuration was also refined with the metallic section of tailpipe (inset) that was previously exposed making way for a more simple piece of bodywork, with heat treatment applied. This not only removed any transition issues for the exhaust plume but also any fears that the engines movement could cause damage to the area.
Lastly the team arrived with their version of the F-Duct to test. Much like the original McLaren system it was connected to the rear wings upper flap with slots on the rear face used to disturb the flow and 'stall' the wing.
Round 8 - Canada
Sebastian Vettel at the wheel of his RB6 - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-8-canada.html |
The team returned to the front wing design used prior to Turkey but the rear wing mainplane was amended to suit the circuits characteristics.
They presented a new diffuser at Montreal with the previous curved outer wall of the diffuser replaced with this sharp edge. This undoubtedly shed a vortex that helped to control the surrounding flow structures.
Round 9 - European GP
Sebastian Vettel crosses the swing bridge on the Valencia street course - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-9-european.html |
Although the team had tested their F-Duct solution in preceding GP's the system finally got the green light in Valencia. The F-duct used a fluidic switch in order to change the direction of airflow from a lower neutral outlet to pipework that fed a hollow rear wing element. As this article is already particularly expansive I won't explain the F-Ducts operation in full again but if you wish to understand it better I have an explanation in this previous article: http://www.somersf1.co.uk/2015/10/in-theory-blown-rear-wing-active-drd.html
The change made to the diffusers outer shape in Canada was met with further revisions in Valancia. Fillets were made to the diffusers upper surface above each of the vertical strakes, injecting flow into the low pressure region earlier and helping to overcome their height.
Round 10 - Great Britain
Mark Webber at the the wheel of his RB6 at Silverstone - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-10-british.html |
Whilst the hoopla focused attention on the wing elements it is also vital to note the changes made by the team to the position of the FOM camera housings.
The usual hammerhead configuration (inset) as raced by Webber was changed for the new specification wing. I've highlighted the FOM camera housings in green, which on their own are supposed to be aerodynamically neutral. However, as has been the case for some time designers use them alonside other components to gain an advantage. In this case Red Bull moved the front wing forward, reducing the point at which the mainplane mounts to the front wing pillars. Meanwhile, they mounted the camera housings inside the pylons behind the mainplane, in order that they gain an advantage from both mandated neutral sections (the mainplane Y250 section and the camera housings). The camera housings needed additional support and so small tabs were also added at the base of the pylons (highlighted in purple).
The placement of these items means the previously neutral central section of the car can once again generate its own downforce and will create new aero structures which help to control the vortex shed either end of the section (Y250). As we can see in the image above (camera housings once again highlighted in green) it allows the overall surface to have a different angle of attack. Furthemore, this can be trimmed during setup as the camera housings can be angled +/- 5 degrees.
Round 11 - German GP
Vettel at the wheel of the RB6 in Germany - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-11-german.html |
"Okay... so... Fernando is faster than you. Can you confirm you understood that message?"
Massa duly slowed to allow Alonso passed to take victory much to the discontent of the viewing public, with team orders banned. Vettel finished in 3rd whilst an oil consumption issue meant that Webber trailed home in sixth.
Another new iteration of the teams front wing appeared in Germany. A smaller tier appeared in the upper flap of the wing increasing efficiency and allowing a more aggressive angle of attack to be used on the outboard section.
Round 12 - Hungary
Mechanics push the RB6 into the FIA scrutineering bay - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-12.html |
The FOM camera housings were once again placed behind the mainplane in Hungary and given the high downforce nature of the circuit it added substance to the conclusion that the configuration was able to help the team generate more dowforce.
The FIA's Jo Bauer inspect the RB6's front wing |
Here's a fantastic piece, written in retrospect, that accompanies the image above by @ScarbsF1 explaing the use of aeroelasticity to circumnavigate the regulations and create the desired flexi-wing: https://scarbsf1.wordpress.com/2010/07/30/aero-elasticity-%E2%80%93-red-bulls-front-wing/
Round 13 - Belgium
Vettel at the wheel of the RB6, roll aside you can understand why teams believed the Red Bull wings were flexing - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-13-belgian.html |
Webber's pole position counted for naught come race day as he allowed the revs to drop too far as he released the clutch paddles, putting him anti-stall and demoting him to 6th. Without the Red Bull drivers to keep him in check Hamilton started to gap the field, further assisted by Vettels exhuberance to get past Lewis' McLaren team mate, resulting in Button's retirement, a pit stop to replace a tyre he'd damaged in the collision and a further trip through the pits for the drive through penalty for his role in the collision.
A damaged tyre from the collision with Button put pay to any meaningful result for Vettel |
The FIA made good on their promise of increasing the deflection tests in Belgium, rather than needing to sustain a load of 50kgs (50nm) without deflecting more than 10mm they must be able to withstand a 100kg load without deflecting more than 20mm. The Red Bull and Ferrari wings which were being contested both passed the increased tests.
Red Bull's beam wing was revised for the Belgian GP with fillets cut into the outboard sections and a V groove placed in the central section. This was done to boost straightline speed without severely harming downforce levels.
Round 14 - Italy
Mark Webber at the wheel of the RB6, note the low dowforce rear wing being employed. More pictures in the full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-14-Italy_16.html |
Ahead of the GP the FIA instructed the teams that they may increase the test procedures introduced at the last race, as they tried to get on top of the flexi wing situation. Furthermore, as logic dictates that putting the front wing closer to the ground you must also do the same with the splitter, ergo they believed it must also be deflecting, as such the tests would cover this too.
Round 15 - Singapore
Vettel bounces his RB6 over the kerbs in Singapore - Full image gallery: http://www.somersf1.co.uk/p/blog-page_16.html |
The race got underway without either Red Bull driver making up ground, however, when a safety car slowed things down after just 4 laps the team instructed Webber to make a stop. He was concerned by the teams call but duly took on the Prime tyre and set about carving his way back through the field. Alonso and Vettel, who didn't pit under the safety car, set about building a lead to cover his charge and traded fastest laps until their simultaneous stops on lap 29. A safety car on lap 35 bunched the pack, allowing Hamilton a run on Webber along Raffles Boulevard but the two touched in turn 7.
This led to Hamilton's retirement and left Webber with a vibration he'd have to manage as the tyre was pushed slightly off the rim. Meanwhile, the battle between Alonso and Vettel had intensified, with Vettel pushing hard for victory. They crossed the line with just 0.293 seconds splitting them, with Webber finishing nearly 30 seconds adrift but continued to lead the championship.
It may seem like a very minute detail but the team added this small control fin on the upper quarter of the brake duct in Singapore. The fin would help to control airflow around the inner shoulder of the tyre, assisting in flow downstream, something of particular importance to the leading edge of the sidepod for example.
Round 16 - Japan
Webber's RB6 with the iconic ferris wheel in the background - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-16-japanese.html |
An accident on the way to the grid meant that Di Grassi wouldn't start the race and more incidents swiftly followed, with a further 4 drivers missing by the end of the first lap. This bought out the safety car and whilst the field began to bunch it became apparent that Kubica, who had leaped Webber at the start, was now missing, having been forced to stop when his right-rear tyre had come free. The Red Bull pushed one another hard with less than a second seperating the pair at the chequered flag. Vettel was victorious over his team-mate, while the retirement of Kubica and the subsequent finish positions of Alonso, Button and Hamilton meant that the title was still a five horse race.
Red Bull retained their new F-Duct design for the Japanese GP but changed the design of the lower beam wing, with a much shorter chord at the outboard sections creating a bow shape, increasing overall efficiency. You'll note in this shot that the team aslo revised the outer sections of the diffuser, adding heat treatment to the surfaces.
The deck ahead of the rear tyre also saw revision with an additional tyre squirt hole added, in order to improve how airflow shed by the rear wheel into the diffusers path was controlled.
Round 17 - Korea
Sebastian Vettel behind the wheel of the RB6 at the Korean GP - Full image gallery: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-17.html |
The safety car was deployed once more as the marshalls cleared the cars and debris, swiftly followed by the third safety car of the day. This led to a slew of tyre changes as the drivers moved from the full wet to the intermediate, at which point Alonso dropped a place to Hamilton, following a poor stop. It was all for nothing though, as the McLaren driver went deep into turn 1 as the field went back to racing speed, allowing Alonso to take the place back. Alonso had the bit between his teeth, chasing Vettel down whilst producing the fastest laps of the race. However, Vettel suffered an engine failure on lap 45 and subsequently retired. With both Red Bulls out of the race Alonso and Hamilton finishing 1st and 2nd the championship race was wide open still as Alonso now led with 2 to go.
Round 18 - Brazil
Full image gallery for the Brazilian GP: http://www.somersf1.co.uk/p/techf1le-red-bull-rb6-round-18.html |
An extraordinary display during Q3 saw Nico Hulkenberg qualify on pole for Williams, over a second quicker than the Red Bull's of Vettel and Webber.
As four of the five title hopefuls lined up in the top five for the grand prix it was shaping up to be a great race. Vettel took charge of the race into the first corner, whilst Webber dispatched of Hulkenberg in turn 4. On lap 2 Hamilton made an error in turn 4 that allowed Alonso to slip by but, he found himself caught behind Hulkenberg allowing the Red Bull drivers to build a gap. Alonso got brave on lap 7 and made the pass on the slower Williams as he had to go defensive in turn 4. Hulkenberg continued to defend against Hamilton until the pitted at the end of lap 14. Hamilton stayed out but continued to complain of a lack of grip meaning he was the first of the front runners to blink and take on fresh rubber.
A crash by Liuzzi on lap 51 bought out the safety car and bought the pack closer together once more but, with the lapped cars of Barichello and Petrov between Vettel and Webber it did little to improve the battle. Vettel took the victory with Webber 4 seconds behind, whilst the formation finish of Alonso, Hamilton and Button meant they'd all be mathematically challenging for the title at the last race.
Round 19 - Abu Dhabi
Mark Webber wrestling with the RB6 in Abu Dhabi - Full image gallery: http://www.somersf1.co.uk/p/blog-page_26.html |
As the race got underway, both Vettel and Hamilton retained their positions but Alonso lost out to Button. A safety car owing to a collision with Schumacher and Liuzzi saw the action tempered until lap 11. Both Webber and Alonso were forced into earlier stops than they'd have liked owing to high tyre degradation, whilst Vettel and Hamilton continued to post faster times on the worn rubber. Alonso and Webber's progress, as they now lay astern, was hampered by Petrov, leaving Vettel, Hamilton and Button with the podium honours. Vettel's victory meant he led the championship for the first time and stole the title from under the noses of his counterparts.
Conclusion
2010 provided the teams with an immense challenge, as the rise of flexi-wings, F-Ducts and blown diffusers intensified the development battle. The diversity in these solutions meant we were treated to some very different ideas as the teams battled for supremacy. Red Bull's approach to flexible front wing design and a well engineered off throttle double diffuser gave them an advantage over many of their rivals. Their later adoption of the F-Duct solidified their charge toward victory as the RB6 became not only the best car at the apex but also one to be reckoned with on the straights.
Please bear in mind the amount of time an article like this takes to put together, as such, if you like what you've seen here and/or what I do on a regular basis then I'd ask you to check out my Go Fund Me page - https://www.gofundme.com/yb6jn958
Great article Mr Somerfield.Can you make something like this for MP4-26?
ReplyDeleteThis took a considerable amount of time to piece together but I do plan on doing more in the future...
DeleteThanks Matt, great read that brought back a whole lot of memories.
ReplyDelete