What makes an exhaust better ?

[Edis]

I am not good at drawing, therefore don't have tools to sketch any idea that may strike me I also hope I am not asking an idiotic question out of the blue..... I also not definitely know the regulations whether this is possible, but just will briefly state what I think about exhaust and downforce!

I request the drawing lads here to exploit my idea a little bit better with your drawing skills.....


is it possible to direct hot exhaust from an F1 engine to the rear wing where a low-weight heat-resistant or something-of-that-kind plates are fixed at a predetermined angle that directs the exhaust gases out through the rear wing and thus giving the rear end of an F1 car a little bit of downforce by the the shear force and high speed of the exhaust gas??? I mean, the force and speed of the exhaust will push those plates downwards and will kind of increase downforce to the rear end.

I don't know if I have stated my idea briefly enough to understand, but if not, pls help me correcting it.

Normally this was done by injecting the high velocity exhaust into the diffuser, but that also made downforce levels dependant on the throttle angle and engine speed. However, this was more about energizing the boundary layer than creating downforce with the exhaust flow.

The exhaust reach a maximum flow of around 0.5 kg/s, if we say that the exhaust velocity is 180 m/s it will provide a thrust of 90 N or 9 kgf.

[010010011010]

Why dont you just point the exhaust straight up and get the downforce that way without needing a wing at all?

And this way you could position in in the center of the car so it wouldnt affect the balance, or at least not as badly.

Now as i was writing this i just reliased that the exhausts on the MP4-23 were like this, i.e. straight up in the middle of the car, maybe thats partially why they did it?

As for directing it into the diffuser, whats the boundary layer?

[Edis]

Why dont you just point the exhaust straight up and get the downforce that way without needing a wing at all?

And this way you could position in in the center of the car so it wouldnt affect the balance, or at least not as badly.

Now as i was writing this i just reliased that the exhausts on the MP4-23 were like this, i.e. straight up in the middle of the car, maybe thats partially why they did it?

As for directing it into the diffuser, whats the boundary layer?

http://en.wikipedia.org/wiki/Boundary_layer