Gran Turismo 5 Red bull X2010 vs Red bull X2011 Comparison

Recently included in Gran Turismo 5′s first Downloadable Content, the Red Bull X2011 Prototype, the successor to last years edition has a few key differences that many of us may not have caught right away.

The following screenshots demonstrate  the differences between the Red Bull X2010 (Orange) and the Red Bull X2011 (Prototype).  A list of changes are stated after the images in respect to the order they are presented.

1. Slimmed down mono-canopy for reduced frontal projected surface area
The engine induction box and the shock absorbent material supporting the driver helmet was optimized, to slim down the glass canopy characteristic to the X2010. As a result the frontal projected surface area of the car has been reduced.

2. Optimization of the side pontoon shape
The shape of the side pontoons containing the radiator as seen from its sides, were changed to become a narrow– bulge– narrow cross section, so that the air flows neatly towards the rear (mainly to the rear diffuser).

As compared to the X2010, the upper and lower surface (seen from the side) of the side pontoon is now more tear-dropped in shape, and leads air efficiently towards the rear. Though not apparent from the outside, the cross sectional area of the air duct leading from the exhaust fan to the skirt at the rear end was also made slightly larger to improve the efficiency of the fan.

3. Changed the mechanism of the exhaust fan to a rotating blade – static blade combination
The fan used to draw out the air from the underfloor was improved. The X2010 utilized a simple fan using only rotating blades, but in the X2011 the fan now takes on a two layer structure using static blades added behind the rotating blades to improve efficiency.

Due to the improved efficiently it became possible to reduce the speed of the exhaust fan, resulting in less loss in drive power for the engine. This has improved engine output by approximately 5%.

4. The width of the rear wing was widened to the full width of the body
The width of the rear wing on the X2010 was limited to be within the width of the rear wheels, but this has now been widened to the full width of the body. This allows it to more effectively rectify the air flowing over the rear wheel arch, reducing both drag and lift.

5. Optimized the shape of the rear wheel fender
Another characteristic shape of the X2010, the rear fender with the rear wheel covers, was changed to be more tear-dropped in shape (mainly the upper surface). The lifted tail end of the fender was also made slightly longer.

This is to reduce the drag caused by the air wrapping around at the rear end of the car after passing though the rear fender, as much as possible

6. Extended the rectifying fins at the rear end of the front fenders towards the rear
The rectifying fins at the rear end of the front fenders were extended so that air flowing on the outside of the front fenders will flow more smoothly towards the side pontoons.

7. Changed the shape of the exhaust louver on top of the pontoons
The shape of the exhaust louvers on top of the pontoons were revised to more efficiently draw out air in the side pontoons that has passed through the radiator.

8. Changed the position of the exhaust outlet
The position and direction of the exhaust outlet on top of the side pontoons were optimized to match the flow of air above the pontoons.

Source: http://us.gran-turismo.com/us/news/d6067.html
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