Circuits

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The Autodromo Nazionale Monza, home to the Italian Grand Prix, is one of the oldest circuits still in use in Formula One.
A typical circuit usually features a stretch of straight road on which the starting grid is situated. The pit lane, where the drivers stop for fuel and tyres during the race, and where the teams work on the cars before the race, is normally located next to the starting grid. The layout of the rest of the circuit varies widely, although in most cases the circuit runs in a clockwise direction. Those few circuits that run anticlockwise (and therefore have predominantly left-handed corners) can cause drivers neck problems due to the enormous lateral forces generated by F1 cars pulling their heads in the opposite direction to normal.
Most of the circuits currently in use are specially constructed for competition. The current street circuits are the Circuit de Monaco and Melbourne, although races in other urban locations come and go (Las Vegas and Detroit, for example) and proposals for such races are often discussed – most recently London and Beirut. Several other circuits are also completely or partially laid out on public roads, such as Spa-Francorchamps. The glamour and history of the Monaco race are the primary reasons why the circuit is still in use, since it is thought not to meet the strict safety requirements imposed on other tracks. Three-time World champion Nelson Piquet famously described racing in Monaco as "like riding a bicycle around your living room".

A map showing countries which have hosted Formula One Grands Prix.
Circuit design to protect the safety of drivers is becoming increasingly sophisticated, as exemplified by the new Bahrain International Circuit, added in 2004 and designed – like most of F1's new circuits – by Hermann Tilke. Several of the new circuits in F1, especially those designed by Tilke, have been criticised as lacking the "flow" of such classics as Spa-Francorchamps and Imola. His redesign of the Hockenheim circuit in Germany for example, while providing more capacity for grandstands and eliminating extremely long and dangerous straights, has been frowned upon by many who argue that part of the character of the Hockenheim circuits was the long and blinding straights into dark forest sections. These newer circuits, however, are generally agreed to meet the safety standards of modern Formula One better than the older ones.
The most recent addition to the F1 calendar is Istanbul Park in Turkey, which first staged an F1 race in 2005. The next confirmed additions for the 2008 Formula One season will be street races in Valencia[35] and Singapore (the latter set to be the host of the first night race in F1 history)[36]

Cars and technology

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Modern Formula One cars are mid-engined open cockpit, open wheel single-seaters. The chassis is made largely of carbon fibre composites, rendering it light but extremely stiff and strong. The whole car, including engine, fluids and driver, weighs only 605kg. In fact this is the minimum weight set by the regulations – the cars are so light that they often have to be ballasted up to this minimum weight. The race teams take advantage of this by placing this ballast at the extreme bottom of the chassis, thereby locating the centre of gravity as low as possible in order to improve handling and weight transfer.
The cornering speed of Formula One cars is largely determined by the aerodynamic downforce that they generate, which pushes the car down onto the track. This is provided by 'wings' mounted at the front and rear of the vehicle, and by ground effect created by the movement of air under the flat bottom of the car. The aerodynamic design of the cars is very heavily constrained to limit performance and the current generation of cars sport a large number of small winglets, 'barge boards' and turning vanes designed to closely control the flow of the air over, under and around the car. The 'barge boards' in particular are designed, shaped, configured, adjusted and positioned not to create downforce directly, as with a conventional wing or underbody venturi, but to create vortices from the air spillage at their edges. The use of vortices is a significant feature of the latest breeds of F1 cars. Since a vortex is a rotating fluid that creates a low pressure zone at its centre, creating vortices lowers the overall local pressure of the air. Since low pressure is what is desired under the car, as it allows normal atmospheric pressure to press the car down from the top, by creating vortices downforce can be augmented while still staying within the rules.
The other major factor controlling the cornering speed of the cars is the design of the tyres. Tyres in Formula One are not 'slicks' (tyres with no tread pattern) as in most other circuit racing series. Each tyre has four large circumferential grooves on its surface designed to further limit the cornering speed of the cars. Suspension is double wishbone or multilink all round with pushrod operated springs and dampers on the chassis. Carbon-Carbon disc brakes are used for reduced weight and increased frictional performance. These provide a very high level of braking performance and are usually the element which provokes the greatest reaction from drivers new to the formula.
Engines are mandated as 2.4 litre naturally aspirated V8s, with many other constraints on their design and the materials that may be used. The 2006 generation of engines spun up to 20,000 rpm and produced up to 780 bhp (582 kW).[37] The previous generation of 3 litre V10 engines are also allowed, albeit with their revs limited and with an air restrictor to limit performance. Engines run on unleaded fuel closely resembling publicly available petrol. The oil which lubricates and protects the engine from overheating is very similar in viscosity to water. For 2007 the V8 engines are restricted to 19,000 rpm with limited development areas allowed, following the engine specification freeze from the end of 2006.
A wide variety of technologies – including active suspension, ground effect aerodynamics and turbochargers – are banned under the current regulations. Despite this the 2006 generation of cars can reach speeds of up to 350 km/h (around 220 mph) at some circuits (Monza).[38] A Honda Formula One car, running with minimum downforce on a runway in the Mojave desert achieved a top speed of 415 km/h (258 mph) in 2006. According to Honda the car fully met the FIA Formula One regulations.[39] Even with the limitations on aerodynamics, at 160 km/h aerodynamically generated downforce is equal to the weight of the car and the often repeated claim that Formula One cars create enough downforce to 'drive on the ceiling' remains true in principle, although it has never been put to the test. At full speed downforce of two and a half times the car's weight can be achieved. The downforce means that the cars can achieve a lateral force of up to five times the force of gravity (5 "g") in cornering – a high-performance road car like the Ferrari Enzo only achieves around 1 "g".[40] Consequently in corners the driver's head is pulled sideways with a force equivalent to 20kg. Such high lateral forces are enough to make breathing difficult and the drivers need supreme concentration and fitness to maintain their focus for the one to two hours that it takes to cover 305km.

Cost of Formula One

Estimated budget split of an F1 team based on the 2006 season
In March 2007 F1 Racing published its annual estimates of spending by Formula One teams. The total spending of all eleven teams in 2006 was estimated at $2.9 billion. This was broken down as follows; Toyota $418.5 million, Ferrari $406.5 m, McLaren $402 m, Honda $380.5 m, BMW Sauber $355 m, Renault $324 m, Red Bull $252 m, Williams $195.5 m, Midland F1/Spyker-MF1 $120 m, Toro Rosso $75 m, and Super Aguri $57 million.
Costs vary greatly from team to team; in 2006 teams such as Honda, Toyota, McLaren-Mercedes and Ferrari are estimated to have spent approximately $200 million on engines, Renault spent approximately $125 million and Cosworth's 2006 V8 was developed for $15 million.[41] In contrast to the 2006 season on which these figures are based, the 2007 sporting regulations ban all performance related engine development