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.
In flapping flight, the wing is acting both as a lifting surface and as a means of propulsion. LIFT. When assessing the wing for lift, it is the curve of the wing, feather quality, the size of the secondary flights and the shoulder support of the wing that are important. The curve of the wing. This refers to the curve, âhumpâ or camber observed on the top of the outstretched wing when viewed from the front.