Abstract: Leading edge of supporting surfaces of aircraft. A primary structure (EP) made without ribs is assembled with a specific frontal area (ZF) against impacts. The primary structure comprises two upper and lower covering panels (1, 2) and two diagonal and frontal spars (3, 4), which constitute the strong and rigid structural assembly of the leading edge (BA). The frontal area (ZF) is made up of one or two elemental parts which determine a kind of roof tile which closes the outer aerodynamic contour of the profile of the leading edge (BA) and provides a good behaviour against erosion, operational impacts on the ground and the impact of birds in flight. The invention is applicable to wings, stabilizers and control surfaces of aeroplanes.

Abstract: A process for simulating the appearance of marble in an array of colors on a smooth paintable surface at room temperature by preparing the surface to receive paint, applying a base coat of black lacquer paint, applying a coat of iridescent paint, applying a flexible sheet such as plastic wrap to the iridescent coat while still wet, immediately removing the flexible sheet leaving a three-dimensional impression, applying a translucent or candy color coat, and finally a clear coat.