I havent flown in about 9 years and I never heard of 3d, 4d flying. What exactly is that?

Post stall aerobatics.

3D is wild, throw the sticks and make the model do stuff planes weren't meant to do. 4D is the same but throw in a variable pitched prop and you can do it backwards!

QQ calls 3D"flying beyond the stall". Basically keeping the plane in the air using high angles of attack and prop wash/thrust. 4D like Maxx said is done using an electric plane with a prop that will reverse pitch. Imagine a plane hovering with the engine down.

David

Flying without the use, or need, of wings!

Look up a member here called cubmaster126,he's a professional, it's kinda hard for us simple circle jerks to explain it

I know what it is, I just didnt realize what it was called.

Thanks guys.

Although I fully understand what type of flying 3D represents, I don't know exactly the origin of the word. Is it somewhat related to 3d as in 3 dimensions or is it simply a competition class like F3A, F5B, etc?