HL7414 Asiana Airlines Cargo (with wing condensation)
Boeing 747-48EM(BDSF) (cn 25452/892) Departing ANC off rwy 32. Lifting surfaces such as wings generate condensation in humid air. The lift is due to relatively low air pressure on one side of the wing and relatively high air pressure on the other side. Significant lowering of the air pressure leads to lower the temperature of the air and any water vapours present in the air. If the air pressure on the suction side of the wing is low enough and the ambient air is sufficiently humid, the drop in temperature is enough to cause condensation of water vapours resulting in the formation of a cloud on the upper surfaces of the wings. Such condensation is usually seen during situations requiring large lift, e.g. during high-g maneuvers or during landings or take-offs.
HL7414 Asiana Airlines Cargo (with wing condensation)
Boeing 747-48EM(BDSF) (cn 25452/892) Departing ANC off rwy 32. Lifting surfaces such as wings generate condensation in humid air. The lift is due to relatively low air pressure on one side of the wing and relatively high air pressure on the other side. Significant lowering of the air pressure leads to lower the temperature of the air and any water vapours present in the air. If the air pressure on the suction side of the wing is low enough and the ambient air is sufficiently humid, the drop in temperature is enough to cause condensation of water vapours resulting in the formation of a cloud on the upper surfaces of the wings. Such condensation is usually seen during situations requiring large lift, e.g. during high-g maneuvers or during landings or take-offs.