Williams FW31
Encyclopedia
The Williams FW31 is a Formula One
Formula One
Formula One, also known as Formula 1 or F1 and referred to officially as the FIA Formula One World Championship, is the highest class of single seater auto racing sanctioned by the Fédération Internationale de l'Automobile . The "formula" designation in the name refers to a set of rules with which...

 motor racing car, designed and built by WilliamsF1
WilliamsF1
Williams Grand Prix Engineering Limited, trading as AT&T Williams, is a British Formula One motor racing team and constructor. It was founded and run by Sir Frank Williams and Patrick Head...

. The AT&T
AT&T
AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, Dallas, Texas, United States. It is the largest provider of mobile telephony and fixed telephony in the United States, and is also a provider of broadband and subscription television services...

 Williams
team used the FW31 to compete in the 2009 Formula One season
2009 Formula One season
The 2009 Formula One season was the 60th FIA Formula One World Championship season. The season took place over 17 rounds, and started with the on 29 March 2009. It ended on 1 November 2009 with the inaugural ....

. The car was unveiled on January 19, 2009 at the Autódromo Internacional do Algarve
Autódromo Internacional do Algarve
The Autódromo Internacional do Algarve commonly referred to as Portimao Circuit is a race circuit located in Portimão, Portugal. With a total cost of €195 million , the project includes a karting track, technology park, five-star hotel, sports complex and apartments.Construction was finished in...

 circuit in southern Portugal
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

, and was first driven by the team's test driver Nico Hülkenberg. The car was a mid-field runner, in contention for points on many occasions in the hands of Rosberg
Nico Rosberg
Nico Erik Rosberg is a racing driver for the Mercedes GP Formula One team. He races under the German flag in Formula One, although he competed for Finland earlier in his career...

 but rarely contending for podiums. Rosberg may have scored 3rd position in Singapore
2009 Singapore Grand Prix
The 2009 Singapore Grand Prix was the fourteenth race of the 2009 Formula One season. It was the second Singapore Grand Prix to be part of a Formula One Championship and the tenth Singapore Grand Prix overall. It was also the second Formula One race to be held at night...

 but for running wide on the exit of the pitlane and receiving a penalty. Many criticized Rosberg for failing to score a pole position while topping the times in practices on numerous occasions, notably in Brazil
2009 Brazilian Grand Prix
The 2009 Brazilian Grand Prix was a Formula One motor race which was held on October 18, 2009 at the Autódromo José Carlos Pace, São Paulo, Brazil. It was the sixteenth race of the 2009 Formula One season...

, when the Williams cars had excelled in practice sessions in wet conditions, but did not produce the same level of performance in qualifying. While Rosberg often scored points and elevated the car to where many will argue that it didn't belong, Rosberg's team mate Nakajima
Kazuki Nakajima
is a Formula One driver from Japan who drove for the Williams-Toyota team from to . Prior to that he had been their test driver, as well as a competitor in the GP2 Series for the DAMS team....

 failed to score a point all season and possibly cost the team a higher position in the Championship standings. The team eventually finished 7th.

Diffuser controversy

At the first race of the season
2009 Australian Grand Prix
The 2009 Australian Grand Prix was a Formula One motor race held on 29 March 2009 at the Melbourne Grand Prix Circuit, Melbourne, Australia. It was the first race of the 2009 Formula One season. The race, contested over 58 laps, was won by Jenson Button for the Brawn GP team after...

, an official complaint was launched by other teams against the rear diffusers
Diffuser (automotive)
A diffuser, in an automotive context, is a shaped section of the car underbody which improves the car's aerodynamic properties by enhancing the transition between the high-velocity airflow underneath the car and the much slower freestream airflow of the ambient atmosphere...

 of the Williams FW31, Toyota TF109
Toyota TF109
The Toyota TF109 was the Toyota Racing Formula One car for the 2009 Formula One season. It was revealed online on Toyota's website on 15 January 2009 and made its track debut on 18 January at the Autódromo Algarve. As far as performance went, the car was extraordinarily inconsistent...

 and the Brawn BGP 001
Brawn BGP 001
The Brawn BGP 001 is a Formula One world championship winning racing car, designed and built by Brawn GP. It was the first, and only, Formula One car used by the Brawn GP team, used to contest the 2009 Formula One season.The car won eight out of the seventeen Grands Prix it competed in.It was...

 saying that they were illegal, but after analysing the cars the FIA reported that the cars weren't illegal. The teams appealed and after much deliberating the car were deemed legal by the FIA.

Formula One World Championship results

(results in bold indicate pole position; results in italics indicate fastest lap)
Year Entrant Engine Tyres Drivers 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Points WCC
AT&T
AT&T
AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, Dallas, Texas, United States. It is the largest provider of mobile telephony and fixed telephony in the United States, and is also a provider of broadband and subscription television services...

 Williams
WilliamsF1
Williams Grand Prix Engineering Limited, trading as AT&T Williams, is a British Formula One motor racing team and constructor. It was founded and run by Sir Frank Williams and Patrick Head...

Toyota
Toyota F1
Panasonic Toyota Racing was a Formula One team owned by Japanese car manufacturer Toyota and based in Cologne, Germany. Toyota announced their plans to participate in F1 in 1999, and after extensive testing with their initial car, dubbed the TF101, the team made their debut in 2002...

 RVX-09 V8
V8 engine
A V8 engine is a V engine with eight cylinders mounted on the crankcase in two banks of four cylinders, in most cases set at a right angle to each other but sometimes at a narrower angle, with all eight pistons driving a common crankshaft....

AUS
2009 Australian Grand Prix
The 2009 Australian Grand Prix was a Formula One motor race held on 29 March 2009 at the Melbourne Grand Prix Circuit, Melbourne, Australia. It was the first race of the 2009 Formula One season. The race, contested over 58 laps, was won by Jenson Button for the Brawn GP team after...

MAL
2009 Malaysian Grand Prix
The 2009 Malaysian Grand Prix was a Formula One race held on April 5, 2009 at the Sepang International Circuit in Sepang, Malaysia. It was the second race of the 2009 Formula One season. The race was due to be contested over 56 laps, but due to torrential rain, the race was stopped after...

CHN
2009 Chinese Grand Prix
The 2009 Chinese Grand Prix was a Formula One motor race held on April 19, 2009 at the Shanghai International Circuit, Shanghai, People's Republic of China. It was the third race of the 2009 Formula One season, a change from previous years, when it took place towards the end of the season.Sebastian...

BHR
2009 Bahrain Grand Prix
The 2009 Bahrain Grand Prix was a Formula One motor race held on April 26, 2009, at the Bahrain International Circuit, Sakhir, Bahrain. It was the sixth Bahrain Grand Prix and fourth race of the 2009 Formula One season....

ESP
2009 Spanish Grand Prix
The 2009 Spanish Grand Prix was a Formula One motor race held on May 10, 2009 at the Circuit de Catalunya in Montmeló, Spain. It was the fifth race of the 2009 Formula One season....

MON
2009 Monaco Grand Prix
The 2009 Monaco Grand Prix was a Formula One motor race that was held on the 24 May, 2009 at the Circuit de Monaco, in Monaco. The race, which was contested over 78 laps, was the sixth round of the 2009 Formula One season...

TUR
2009 Turkish Grand Prix
The 2009 Turkish Grand Prix was the seventh race of the 2009 Formula One season. It was held on June 7, 2009 at Istanbul Park, Istanbul, Turkey.Felipe Massa won the 2008 Turkish Grand Prix for Ferrari, in addition to his wins at Istanbul Park in 2006 and 2007...

GBR
2009 British Grand Prix
The 2009 Santander British Grand Prix was the eighth race of the 2009 Formula One season. It was held on 21 June 2009 at Silverstone Circuit in Northamptonshire, England. This was scheduled to be the last British Grand Prix to be held at Silverstone, before the event moved to Donington Park for the...

GER
2009 German Grand Prix
The 2009 German Grand Prix was the ninth race of the 2009 Formula One season. It was held on July 12, 2009 at the Nürburgring in Nürburg, Germany; the earliest German Grand Prix on the calendar, since 1926....

HUN
2009 Hungarian Grand Prix
The 2009 Hungarian Grand Prix was a Formula One motor race held on July 26, 2009 at the Hungaroring in Mogyoród, north of Budapest, Hungary. It was the tenth race of the 2009 Formula One season. The race, contested over 70 laps, was won by world champion Lewis Hamilton for McLaren-Mercedes,...

EUR
2009 European Grand Prix
The 2009 European Grand Prix was a Formula One motor race, held on August 23, 2009 at the Valencia Street Circuit in Valencia, Spain. It was the 11th race of the 2009 Formula One season. The race was contested over 57 laps, an overall race distance of 303.9 km...

BEL
2009 Belgian Grand Prix
The 2009 Belgian Grand Prix was a Formula One motor race, held on August 30, 2009 at the Circuit de Spa-Francorchamps near the town of Spa, Belgium. It was the 12th race of the 2009 Formula One season. The race was contested over 44 laps, with an overall race distance of 308.2 km...

ITA
2009 Italian Grand Prix
The 2009 Italian Grand Prix was a Formula One motor race held on September 13, 2009 at the Autodromo Nazionale Monza, Monza, Italy. It was the 13th race of the 2009 Formula One season. It was contested over 53 laps.The race was won by Brawn GP's Rubens Barrichello...

SIN
2009 Singapore Grand Prix
The 2009 Singapore Grand Prix was the fourteenth race of the 2009 Formula One season. It was the second Singapore Grand Prix to be part of a Formula One Championship and the tenth Singapore Grand Prix overall. It was also the second Formula One race to be held at night...

JPN
2009 Japanese Grand Prix
The 2009 Japanese Grand Prix was the fifteenth round of the 2009 Formula One season...

BRA
2009 Brazilian Grand Prix
The 2009 Brazilian Grand Prix was a Formula One motor race which was held on October 18, 2009 at the Autódromo José Carlos Pace, São Paulo, Brazil. It was the sixteenth race of the 2009 Formula One season...

ABU
2009 Abu Dhabi Grand Prix
The 2009 Abu Dhabi Grand Prix was the seventeenth and last race of the 2009 Formula One season. It took place on November 1, 2009 at the 3.45-mile Hermann Tilke-designed Yas Marina Circuit. It was the inaugural Abu Dhabi Grand Prix and also the first ever day-night Grand Prix...

34.5 7th
Rosberg
Nico Rosberg
Nico Erik Rosberg is a racing driver for the Mercedes GP Formula One team. He races under the German flag in Formula One, although he competed for Finland earlier in his career...

6 8 15 9 8 6 5 5 4 4 5 8 16 11 5 Ret 9
Nakajima
Kazuki Nakajima
is a Formula One driver from Japan who drove for the Williams-Toyota team from to . Prior to that he had been their test driver, as well as a competitor in the GP2 Series for the DAMS team....

Ret 12 Ret Ret 13 15 12 11 12 9 18 13 10 9 15 Ret 13

Driver failed to finish, but was classified as they had completed >90% of the race distance.

Half points awarded as less than 75% of race distance completed.

External links

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