Welcome to Southern Sydney Angiography We are proud to introduce Southern Sydney Angiography, a state of the art interventional radiology unit! Southern Sydney Angiography is an Interventional Radiology Service that operates in the St George Private Hospital.
During takeoff and landing, the flaps on the back of the wing extend downward from the trailing edge effectively altering the shape of the wing. This change enables it to divert more air generating more lift. This change also increases drag, which helps a landing airplane slow down while requiring more thrust during takeoff.
What is Friction Drag? Friction is the resistance that happens when two things rub togetherâlike air against an airplane. Friction is partly what causes drag. How Does Friction Work? When an object moves through air, the air closest to the objectâs surface is dragged along with it, pulling or rubbing at the air that it passes.