Skin discoloration can be due to changes in melanin. Melanin is a skin pigment that gives color to the skin. Changes in melanin can also cause skin to be patchy. Treatment for skin discoloration includes using topical treatments.
Winglets increase an aircraft's operating efficiency by reducing what is called induced drag at the tips of the wings. An aircraft's wing is shaped to generate negative pressure on the upper surface and positive pressure on the lower surface as the aircraft moves forward.
Aircraft mechanics focus on one (or more) of a plane's eight key parts: â¢ Wings: Provide lift to keep the plane from becoming a huge lawn dart. Store fuel, too! â¢ Flaps: Help slow down the plane because airplanes don't have brakes. â¢ De-icing system: Removes ice from aircraft that's too big for a window scraper.