Cooling efficiency is of special attendance in 2014 , thus Williams did not neglect to design and construct an extra cooling inlet inside the main sidepod tunnel.
Airbox on M03 is very effective in regards of cooling. Beyond the main triangular inlet, there are two more additional openings to cool down internal mechanical parts ( i assume them to be the oil radiator and ERS components). Exploiting airbox zone allows mechanics to maintain sidepod inlets close to 2013 dimensions rather than enlarging them a lot. The appearance of the car now lacking the sculpted bodywork behind the driver’s head resembles more to monocoques prior to 1997 season . Worth’s taking into consideration that such a configuration is more draggy and suffers increased negative aero impact caused from driver’s helmet .
Finally a small but important cooling inlet exists where the engine cover starts to drop downwards to feed the gearbox radiator.
It was surprising to see Mc Laren adopting a relative short, missing the complexity of former seasons, vertical sidepod panel on the MP4/29 . The answer however to this was given shortly on the first test at Jerez with the team to add a chimney just above the panel for enhancing cooling. That chimney simply does not leave enough free space for the panel itself to develop vertically. Chimneys lastly introduced as cooling solution on cars back in 2001 again on a Mc Laren car and onwards for a few years more. Its shape and use gradually evolved and expanded, in some cases combined with a side winglet (Williams), in others used sealed solely as flow conditioner (Ferrari) or even housed the periscope exhaust tailpipes (Ferrari and Jordan ) .
Another new feature on the MP4/29, not present on Launch, was the addition of double vertical flow conditioners on sidepods .
Car cooling is crucial not only for reliability but for overall efficient aerodynamic performance . Teams have to compromise between the previous two having in mind both weather conditions and the nature of track where the race takes place .
Usually larger hot air outlets are present at high temperatures and relative slow tracks featuring many slow turns and hairpins . On the other hand tracks having long straights favor less extreme cooling configurations because the car manages to catch large volumes of fresh cooling air while crossing the stretches .
Pre season testing is a good opportunity to test various cooling options, both conventional and extreme which are more suitable for Malaysia and Bahrain for instance. However the pre season tests takes place during chilly European Winter time and are not representative 100% to real weather conditions the teams are about to cope with ,thus improvements are likely to be made .
Caterham tested/raced from car launch up to Bahrain, overall four cooling configurations as shown and analyzed below
middle sized triangular outlet at the back of the engine cover (also called funnel) , gills at exhaust zone and openings at sidepods tail .
Barcelona test on March
Huge oval outlet at the back of the engine cover, appropriate for extreme hot conditions. However it was never brought to race till now
Large circular outlet at the back of the engine cover , raced at Melbourne and Sepang
China -new concept
Tiny triangular outlet at the back of the engine cover, double openings at sidepods tail. accompanied with diffuser revisions .Raced at Sinopec and Sakhir .This configuration leaves a cleaner airflow over the rear beam wing but as counter side it widens the coca cola bottle silhouette of the car
Another interesting point on C31 at Sepang was the asymmetric cooling gills at cockpit sides . The right sidepod tunnels accommodate the oil tank and thus need extra cooling care .
- Sauber C31 – ducted rear floor at Malaysia (formula1techandart.wordpress.com)
- Sauber duo maintain different set up at Malaysia (formula1techandart.wordpress.com)
- Sauber C31 – cooling options tested during Winter testing (formula1techandart.wordpress.com)
F2012 before Melbourne inherited a set of gills at sidepod ending and a new larger hot air outlet of gearbox radiator . At Sepang cockpit gills were added to improve the cooling efficiency of the car and a rectangular duct in front of the cockpit to cool down the driver .
- Ferrari F2012 – Born RED but….not a BULL (formula1techandart.wordpress.com)
All teams,including Red Bull, at Sepang pay a greater attention to the cooling efficiency of the car. Thus RB8 raced with gilled larger hot air outlets at both cockpit sides , which replaced the Australian simpler holes . The slots on sidepod tops ( pointed with green arrow) remained for Malaysia . That slots were present since the launch of the new RB8 but they were rejected during pre-season testing before coming back again at Melbourne .
- Red Bull RB8 analysis – crazy enough to stand in front of the bull ? (formula1techandart.wordpress.com)