1 Rarely, fistulas occur externally to the skin or internally to another part of the biliary tree, to the pleural cavity or bronchial tree, or to the hepatic artery or portal vein or other vascular structures.
Load factor (aeronautics) In aeronautics, the load factor is defined as the ratio of the lift of an aircraft to its weight and represents a global measure of the stress (load) to which the structure of the aircraft is subjected: where: Since the load factor is the ratio of two forces, it is dimensionless.
CL is the dimensionless lift coefficient. D is the drag force. CD is the dimensionless drag coefficient. A is a reference area, usually the plan area (maximum projected area onto a plane) of an airfoil or wing. qinf is the free stream fluid dynamic pressure from Bernoulli's equation : qinf = 1/2 rhoinf.