How do planes fly upside-down?

Question

I understand that the wing of the plane creates downforce, lifting the plane into the air, so how do planes fly upside-down? Wouldn’t the wings start pushing the plane down into the ground once flipped?

In: 373

Answer 1

Angle of attack (or incidence, I can’t remember) pushes air down and overcomes the Bernoulli effect. Basically think of a fish flipper that is angled relevant to the direction of the flow, it’s going to push water in one direction and the fish in another. Same with wings. They are angled relevant to the air flow and they push air down, and the airplane up. Forget about Bernoulli for this.