Fig. 11
From: Improving the aerodynamics of a fastback car body using a spoiler

(a) Total Drag Force and (b) Total Downforce Variations as a Function of Spoiler Angle in Three Different Reynolds Number Flows.
From: Improving the aerodynamics of a fastback car body using a spoiler
(a) Total Drag Force and (b) Total Downforce Variations as a Function of Spoiler Angle in Three Different Reynolds Number Flows.