Why the wings (the aerodynamics components) are short:

Safety concern;

Short wings have less inertia, & make cars highly maneuverable.

But shorter the wings, lower the Lift coefficient, and higher Drag coefficient.

Picture 1. F2005 Partial airfoil on the Front Wing

Picture 2. Toyota TF105

Airfoils (Dimensionally inverse to the ones applied on the aircraft)

Picture 3. The Front Wing of F2004 (CATIA V5 Computer Aided Design)

Swirl air (circulation) passing though the tip and side forms bound vortex and trailing vortices, respectively. Those vortices give the car a downward Lift.

Another downward Lift is generated by the wheels:

As a symmetrical object, a tire, treated as a cylinder shape has Drag only, but it does when it rotates in the CCW (counterclockwise) direction, two stagnation points are located at the fairly upper part on the tire surface, which indicates that the air flow at the upper part has smaller speed than the lower part. Put in another way, the upper part has larger pressure. The downward Lift is proportional to the wheel’s speed.

Picture 4 Effect of Drag Force (same as Resistance shown above) for symmetrical objects

However, after the racing car runs few laps, the tire surface getting rougher. Rough surface can bring more air with the wheel rotating, which increases the circulation around the wheel. Circulations generate an upward Lift to the wheel. But as the wheel contacts to the ground, the circulation cannot be completed.

As a result, high speed rotating wheels generate downward Lift.

Reference:

Picture 1, http://sports.sina.com.cn/f1, Nov. 16th, 2006

Picture 2, http://sports.sina.com.cb/f1, Nov.16th, 2006

Picture 4, http://www.aerospaceweb.org/question/aerodynamics/streamline, Nov 16th, 2006 

Copyright @ paulospace.spaces.live.com,  2006, All rights reserved

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Sorry for you guys who feel hard to read.

No time to put on pics.

No time! Go back to study.... @ 2:30 am

How does an engineer who has such a complicated life to make other lives easier?

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声明：

无意中发现以前写的碳纤维文章遭他人剽窃，没有经过我同意甚至不加文章出处，以ID maided 发布在funshion.com/bbs里。

为了避免这种事情再次发生，以后的技术贴都将用英文。如果谁想copy，先去翻译吧。

很多人跟随潮流标榜"F1车迷"，我替这种车迷感到羞耻。