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.
The total planform area of both wings is 38 m 2; determine the zero-lift drag coefficient of struts. 19. A single-engine small aircraft has a wing area of 26 m 2 and a turboprop engine that has a power of 600 hp. The aircraft is cruising at 25,000 ft altitude with a speed of 182 knot.