Originally Posted by Bazzer
Wow, 356 Newtons sounds excessive. 1 Newton is the weight of an average sized apple. Imagine 356 apples on your rear spoiler.
80lbs also sounds like alot too, thats 80 bags of sugar on the rear spolier (here in the UK sugar is sold in 1lb bags).
If anybody want to calculate the downforce, the following formula may prove useful.
Where:
D=?
WS= 2.42 ft= 0.825 m
H= .42 ft (from base of spoiler to center of spoiler) =0.143 m
AoA= 16º
ρ=~1.204 kg/m^3
V=80 mi/hr = 129 km/hr = 35.8 m/s
D= 1/2 [(0.825 m)(0.143m )(16º)] (.09) (1.204 kg/m^3) (35.8 m/s)^2
I got 135 N = ~30 lbs