GrizzleBoy wrote:Possibly, simply because the old nose on its own provided a lot of angle of attack.
The new nose now has almost the same angle going over the top and bottom with more pressure underneath it, which is going to cause lift and probably contribute to the "unbelievable understeer" than Button is talking about.
Not necessarily the case. The pressure will be lower underneath due to the higher speed of air under the nose
If your theory was correct the sauber would take off in flight, looking on their nose.
Aeroplanes use higher air speed underneath the wing than above, plus an angle of attack that forces the air downwards under the wing to create lift.
The old McLaren nose was like an aeroplane wing with its front edge pointed downwards (for example, when an aircraft is braking hard and its nose dives, the wings poing towards the floor), which would create:
-higher pressure on top of the wing
-lower pressure underneath (drag)
The new McLaren nose now has a more neutral/balanced profile, more airspeed underneath it than it did before and the underside of the nose has more air pushing against it, where as there was more air pushing against the top of the nose before.
Considerably less downward angle of attack on the nose compared to before, plus more air speed and higher pressure underneath it than before.
You say that pressure will be lower under the nose due to higher flow of air under the nose, but you miss out the fact that the old nose created a higher pressure area at the upper front of the nose due to its downward angle of attack.
With that angle of attack almost made neutral, there is now less pressure on top than before and more pressure hitting the bottom of the nose that slopes downwards than before.
Less pressure on top surface of the nose than before + more air pressure on lower nose surface than before + considerably less (almost neutralised) downward angle of attack = Lift, surely?
Lift isn't going to be the net effect on the car for obvious reasons, but I don't see why the new nose wouldn't be creating more lift and therefore less downforce, than before.
Last edited by GrizzleBoy on Sat May 12, 2012 5:40 pm, edited 1 time in total.