Wet - what makes you think that? Just as well that the Chapparal never raced in the wet in period.
Of course some chose a more traditionally British means of handling the weather.
Anyhow, back on topic the link from the Orion to the Spitfire:
The Orion was the first commercial transport with retractable u/c, which made it faster than many military aircraft of the era. So when Swissair started operating them, it put the nose of the German aircraft industry out of joint. One of the aircraft they responded with was the Heinkel 70.
Beverley Shenstone, Mitchell's aerodynamicist saw the Heinkel at the Paris Airshow and was greatly impressed by the surface finish of the wings.
Henceforth the Heinkel became the criterion for aerodynamic smoothness to be met for the Spitfire design. The Heinkel team achieved the finish by filling the countersunk rivets and then smoothing with several layers of paint, too heavy a method to copy directly.
So woosh, bonk, Bob's your Auntie : Lockheed Orion annoyed Heinkel into producing the HE70, which gave the Supermarine team an aerodynamic smoothness to aim for.
Would all Americans now wishing to claim that this proves they won the Battle of Britain form an orderly queue somewhere in Antartica. Don't worry, your contribution to Global Warming will soon clear up the glaciers and make it quite habitable.
