08/01/2005
NEWS STORY
Changes to the technical regulations for the 2005 season have greatly affected the design of the TF105 race car with notable alterations to the aerodynamics. These new regulations have targeted four specific areas on Formula 1 cars – front wing, rear wing, side diffusers and the rear of the car.
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A side view comparison of the TF104B with the new TF105 race car
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A side view comparison of the TF104B with the new TF105
(1) The nose cone is higher to cope with the new regulations of the new wings
(2) The front wing has been raised by 5cm under new aerodynamic regulations
(3) Although quite similar in shape to the TF104B, the TF105 chassis is higher in lower section to the floor and ground (4)
(5) A massive amount of work has been done to reduce the cross-section of the TF105 and the sidepods of the TF105 are considerably lower than those of its TF104B predecessor
(6) Chimneys play a greater aerodynamic role in 2005 and are bigger compared to the TF104B
(7-8) Although rear aerodynamic tools are similar to last year, a lot of detailed work has been undertaken to minimise the loss of downforce imposed by 2005 technical regulations
(9) Exhaust chimney at the rear of the TF105 are greatly reduced in size
(10) Due to the new regulations there is no more seal between the underbody and the tyres
(11) In accordance with new rules, the rear wing needs two top elements pushed forward. They must start from the rear axle. The overhang of the endplate remains the same.
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Detailed drawing of the 2005 front wing regulation
The front wing has been raised up 5 cm. While the TF104B from wing was 10cm above the reference plane (RP), the TF105 must be 15cm above the RP level.
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Detailed drawing of the 2005 rear wing regulation
The rear wing has only 2 top elements like 2004, but in 2005 they have been pushed forwards 15 cm to reduce the ability to create downforce. There were no height limitations on the side diffuser on the TF104B but for 2005 the height has been reduced to only 125 mm.
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Restrictions at the rear of the car shown on the TF104B
One of the harder rules to see on the new car that actually causes a big loss of downforce is around the rear tyres. This image shows the new rules on the 2004 car, the TF104B.
The underbody can no longer make it to the rear tyre, but instead must have a space that is 400mm from the rear axle and 200mm in the transversal section. In image 5, the lighter grey shaded area displays where this space will be on the TF105.
To see enlarged versions of these illustrations, click here