A wet wing is an aerospace engineering technique where an aircraft's wing structure is sealed and used as a fuel tank. Wet wings are also called integral fuel tanks. By eliminating the need for fuel bladders, aircraft can weigh less and the wing root bending moment caused by the lift generated by the wings in flight is decreased. This offers further reduction in weight by allowing structural components to be designed lighter as the components do not need to support larger forces.
Wet wings are common among most civilian designs, from large transport aircraft, such as airliners, to small general...