초록 ▼

A propeller blade of fiber-reinforced plastic with a combined erosion, icing and lightning protection system has a metal shroud fitted to its leading edge, the shroud enclosing a cavity and accommodating a heating conductor at its interior. A ground line of the heating conductor is connected to grou

A propeller blade of fiber-reinforced plastic with a combined erosion, icing and lightning protection system has a metal shroud fitted to its leading edge, the shroud enclosing a cavity and accommodating a heating conductor at its interior. A ground line of the heating conductor is connected to ground and serves as a lightning conductor.

대표청구항 ▼

Propeller blade having a blade span and positioned at a propeller blade hub including metallic parts, the propeller blade comprising: a fiber reinforced plastic airfoil section; an outer shroud constructed from a thermally and electrically conductive, deformable material forming a leading edge of th

Propeller blade having a blade span and positioned at a propeller blade hub including metallic parts, the propeller blade comprising: a fiber reinforced plastic airfoil section; an outer shroud constructed from a thermally and electrically conductive, deformable material forming a leading edge of the plastic airfoil section; cavity means formed by the plastic airfoil section and outer shroud, the cavity means separating the outer shroud and the plastic airfoil section of the blade and extending in a direction of the blade span of the propeller blade; electrical deicing means within the cavity means and in thermal and electrical contact with the outer shroud, the electrical deicing means including a heating conductor and grounding means for electrically grounding the outer shroud; lightning protection means comprising the outer shroud and the grounding means of the electrical deicing means as lightening conductors; and connecting means for connecting the lightening protection means to the metallic parts of the propeller blade hub.