End plates for rear flip-ups

[kilcoo316]

Sorry to revive this one, but can anyone confirm that a forward rotating tyre on an open wheel car would produce downforce as the flow over it slows down/pressure increases?
And if so, is it significant?
TIA

Negative on that one.

It produces lift, not downforce.


The drag is very significant - probably the single largest contributor on the car.


I'm not sure how much lift it produces to be honest, maybe some of the guys that have done SAE/Fstudent work would have a better idea.

[alelanza]

Sorry to revive this one, but can anyone confirm that a forward rotating tyre on an open wheel car would produce downforce as the flow over it slows down/pressure increases?
And if so, is it significant?
TIA

Negative on that one.

It produces lift, not downforce.


The drag is very significant - probably the single largest contributor on the car.


I'm not sure how much lift it produces to be honest, maybe some of the guys that have done SAE/Fstudent work would have a better idea.

Got it, do you know the principle behind getting lift on this one?
Thanks again.

[kilcoo316]

Got it, do you know the principle behind getting lift on this one?
Thanks again.

Stagnation point is toward the bottom of the wheel due to the rotating. Hence a lot of the air is forced over the wheel - Bernoulli takes care of the rest.

There can be little suction from the surface touching the ground anyway.

[alelanza]

Got it, do you know the principle behind getting lift on this one?
Thanks again.

Stagnation point is toward the bottom of the wheel due to the rotating. Hence a lot of the air is forced over the wheel - Bernoulli takes care of the rest.

There can be little suction from the surface touching the ground anyway.

Thanks mate!