Renault Sport F1 Shanghai quick facts

Renault Sport F1 Shanghai quick facts

03.04.2017: 2017 FORMULA 1 HEINEKEN CHINESE GRAND PRIX Shanghai International Circuit

2017 FORMULA 1 HEINEKEN CHINESE GRAND PRIX
Shanghai International Circuit





Quirky Facts


The largest Disney Store, at 54,000 square feet, in the world is located in Shanghai.



Shanghai cooking is sweeter than other areas in China and they consume more sugar than any other part of China.



The Shanghai Marriage Market is a weekly market where parents can go to trade information about their children in hopes of finding them a suitable partner. It is held on Saturdays and Sundays at People's Park.



The longest metro system in the world spreads beneath the city of Shanghai with 365 miles (588 km) of tunnels and track. The Shanghai metro has 364 stations spread throughout the city and connecting major attractions, making it easy to navigate for international visitors. Shanghai boasts the world's fastest train.



Shanghai is the world's busiest sea port, and is an up-and-coming cruise destination, it is also known as the Pearl of the Orient and Paris of the East.




Track



The Shanghai International Circuit is an impressive, vast facility built on former swampland with the assistance of rather a lot of polystyrene.



The circuit has hosted a Grand Prix since 2004 and the local environment can throw-up a wide variety of temperature conditions. Bumpy in places, the circuit features a very long main straight, the occasional slightly banked turn and the challenging turn 1-2 decreasing radius corner combination.




Turn 1


Turn 1 leads straight into turn 2 and can be viewed as a single, decreasing radius corner which places a lot of load on the front tyres with understeer the enemy. Good tyre management here helps with tyre durability. The driver will be on the brakes for some 3secs in this complex, but the track can be bumpy and unsettle the car especially in the entry phase.



Turn 7



A high speed spoon curve taken in seventh or eighth gear. The g-forces here are around 4g as the driver accelerates while turning. Good high speed change of direction required from the car.



Turn 9


Braking into turn 9 is tricky – transition from high speed corners into heavy braking. Exit is important as it sets the car up for turn ten on to the following straight.




Turn 11


The Turn 11 to 13 complex is a mirror image of the first corner and the driver will again be on the brakes for another 2secs, giving another significant opportunity to recharge the battery.



Turn 13


The exit from Turn 13 is critical as the 1.3km back straight sees the ICE at maximum revs and wide open throttle for around 20secs, or approximately 20% of the lap. Getting a good exit is not easy though as the corner is banked.



Turn 14



The hairpin at the end of the straight requires the drivers to brake from over 320kph to just 60kph. The energy going through the brakes at this point will be massive – an average of 700kW over the 3secs braking distance.


Although this is one of a few heavy braking areas around the track, these are well spread over a lap so the brakes have sufficient time to cool – it’s not a harsh track on braking.







Tyres


A selection a step harder than Australia sees Pirelli’s Medium compound make its 2017 race debut in Shanghai. The tyres proved highly durable in Australia, but the high-speed challenge of the Shanghai International Circuit should provide a tougher workout, hence the harder rubber on offer.




Medium (white)



Like the Great Wall of China, the Medium compound goes on and on and on. The Medium is a perfect Feng Shui, well-balanced tyre offering a compromise between performance and durability. It comes into its own on a circuit with high speeds and high loadings, both of which are found in Shanghai. Either this or the Soft must be used at least once in the race.



Soft (yellow)



The Kung Fu fighter of Pirelli’s range, the Soft is used at every race, striking a balance between performance and durability with the accent on performance. Either this or the Medium must be used in the race.



Supersoft (red)


Mandatory in Q3 – but only optional for the race – the Supersoft is the second-softest compound in the 2017 range and capable of an explosive performance in the land that invented gunpowder, albeit with a relatively short performance duration. A reasonably fast warm-up time should be available from this low working range rubber. 




Power Unit notes



-           The two long straights and bursts between corners bring the total percentage of wide open throttle time to over 52% of one lap.


-           Shanghai is unusual as there is a very long straight, but a relatively low percentage of the lap is spent at full throttle. This dichotomy is quite unusual as most circuits are one or the other: either a ‘power track’ such as Monza or Montreal, or ‘driveability track’ such as Hungary or Monaco.


-           The average speed over a lap will be 205kph, putting Shanghai in the middle of the table for lap speeds.


-           Race fuel saving will be low, one of the easiest tracks of the year in this respect.


-           Shanghai is one of the most efficient circuits and close to the maximum amount of energy will be stored in the battery per lap. This will allow us to optimize the amount of energy transferred directly from the H to the K or to the battery.



-           The circuit is situated in an industrial zone next to several factories, some of which produce concrete, which leads to a high concentration of dust particles in the air. Air filters and the turbo will be checked after each practice session to prevent blockages and, therefore, a relative loss of power.




Technical notes


Circuit length:                           5.451km
Race distance:                         305.066km
Race start time:                                    14:00
Full throttle time per lap :          50s in Q and 45s in the race
Fuel consumption:                    1.87 kg/lap with a small amount of fuel saving needed.


Energy recovery :                     Recovered by the MGUK in brake phase is 1.5MJ with possibility of recovering the maximum FIA allowed 2MJ with overload (using the ICE to charge the battery via the K in part throttle)


Longest time spent at full throttle: 16s on the back straight
Percentage of lap spent braking: 21%

Pitlane length:                          350m
Brakewear:                               Low
Difficulty for PU :                     Medium
Aero level:                               Medium

 

 

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03.04.2017 / MaP

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