• 0 Vote(s) - 0 Average
• 1
• 2
• 3
• 4
• 5
Downforce by cars body
03-28-2007, 10:58 AM,
 cologne Member Posts: 203 Threads: 35 Joined: Mar 2007
Downforce by cars body
Only wings can define an lift-coefficient. But most racecars generate an aerodynamic downforce with the car body.

Code:
```[ drag ] position = 0.0, 0.0, 0.2 frontal-area = 1.3 drag-coefficient = 0.56 lift-coefficient = -2.5```
03-28-2007, 03:27 PM,

As far as I understand it, a negative lift value causes a downforce effect.
03-28-2007, 06:12 PM,
 cologne Member Posts: 203 Threads: 35 Joined: Mar 2007

Yes, same as wings!
In reality things are more complicate: car-body-downforce depends much of the distance to the track.

The AX2 car has such a system, you can see the diffusor.
But defined is a wing-front, that doesnÂ´t exist. The wing-rear is correct. A complete drag definition could include the car-body-effect:

Code:
```[ drag ] position = 0.5, 0.0, 0.2 frontal-area = 2 drag-coefficient = 0.3 surface-area = 4.0 lift-coefficient = -0.2```

Normal cars generate positive lift.
03-28-2007, 09:45 PM,
 reece146 Member Posts: 187 Threads: 26 Joined: Oct 2006

What would be more realistic is to have a set of multiple [wing-part] declarations.

For a car with a front wing, a rear wing and a body shape that acts as a wing you could have three declarations:

[wing-front]

[wing-body]

[wing-rear]

This could be useful for other cars that have more than the normal front and rear wings as well... Don't even suggest modelling the interference of flows with turbulence...
03-29-2007, 01:22 PM,
 cologne Member Posts: 203 Threads: 35 Joined: Mar 2007

[wing-body] == [drag]

Another name...

Forum Jump:

Users browsing this thread: 1 Guest(s)