Comment by dameyawn
2 years ago
There is no lift on a sphere or cylinder without rotation dude. The whole point of parent post is that the "proper" discussion does not inlay a good intuitive understanding of lift, which in my opinion, should start with "push air down to go up".
Yes, there's no lift.
But there's quite different flow and drag around it, which was used as opening for for adding rotation (which would add viscosity effects including lift from rotation) and other changed shapes in better way than starting with flat plane.