Quote:
Originally Posted by tsk94
Quote:
Originally Posted by rhyary
As I tried to explain, I don't have a way to measure the AOA in relation to the air. So AOA relative to ground is a reference point but not a "true" aerodynamic AOA.
The true AOA, I will have to find by trail and error.
Yes, the front was recording very little downforce.
|
How is APR measuring AOA to get the lift/drag values published on their site? Surely there is a way for you to replicate the AOA they claim is 5*. Have you contacted them?
From the figure you posted, that wing at 5* at 120mph produces 166lbs of downforce - without a gurney. With a gurney it would be significantly more. If the wing is setup properly to achieve this level of downforce you'd definitely notice the added rear grip, regardless of what the data is showing you. |
APR only publish AOA in relation to the air.
Any yes, I contacted them, but as you know, aero is way more complicated than AOA.
The main challenge is to find the true AOA since every installation will be different.
Again, the issue is not what the wing is doing at 5 AOA, but finding where is 5 AOA.