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

Yes, wings work upside down.

However unless the wings are vertically symmetrical (like aerobatic planes) they will be very inefficient if used the wrong way (upside down).

You will also have issues getting fuel and oil to the engines since it will slosh to the wrong place in the tank but some planes can tolerate this with special design features.