Ever wondered why helicopters have two control sticks while airplanes usually have one? Learn how helicopter controls work and why they're different.

The choppers in the Piasecki H-21 family have the nickname "Flying Banana" due to the bend in the fuselage, which resembled a banana.

Helicopters of all sorts make that iconic, rhythmic sound of thumping in order to maintain flight and maneuver, all powered ...