Taking a closer look at the rear lower zone we can observe the existence of a low height vertical fence .That fence aims to create a low pressure zone behind it and in the area located between the inner rear wheel profile and the diffuser external surface . Furthermore that fence together with the flopping upwards floor lip divert the airflow away from the wheel’s profile reducing drag . Red Bull also raced a similar fence alongside with its floor placed exhaust pipes . The idea is not new as a few years ago Jaguar and Williams used flip ups in this area .
In order to reduce drag HRT constructed the F110 engine cover featuring a distinctive V pointed extention to the rear . The shape and the size of the extension is aerodynamically very important as a larger one would create a better streamlined airflow over the car body but would also make the car more unstable to side wings .
HRT bargeboards follow a quite common pattern in modern Formula 1 as they feature a stepped upper profile to cut drag and improve engine cooling and also have their rear part to be connected directly onto the turning vanes in order to improve airflow management in this area, while also increasing the structure’s strength .
The panels are also simple and have their lower part inclined inwards in an attempt to speed up the airflow close to the sidepod bottoms .
The F110 has a pushrod keel-less front suspension with the steering axis to be placed in front of the upper wishbone instead of being housed inside it . This configuration still offer less drag and furthermore a greater freedom in suspension geometry .
Mc laren in 1998 was the first team to remove bodywork from the area located under the airbox inlet and behind the driver’s helmet so as to reduce frontal surface and hence drag . Since then the morphology of this crucial area evolved a lot and many different paterns of the Mc Laren’s original idea are seen . The two pillars in HRT case are for strenghtening the structure and to meet FIA minimum width rules in this area . The airbox inlet itself has a circular shape and feeds engine’s intake port with high pressure air .
HRT has classic periscope style exhausts , a design first featured by Ferrari F310B back in 1997 . This configuration permits to build a much slimmer rear car end but effects negatively the function of the beam and rear wing if not arranged properly . The 2010 trend about exhaust configuration is though the EBD exhaust blown diffuser design and thus periscope exhausts are considered to be old fashioned now .
HRT features a simple splitter which visually seems not to carry a large amount of ballast . A vertical support is connected on the splitter to ensure structural stiffness . Splitters in general create a Bernoulli effect under the car lowering further the underbody air pressure and boosting downforce production .