초록 ▼

A rotor blade is made of fiber-reinforced synthetic resin and comprises a moulded core with central, front and rear elements and a foot end fastening element, a unidirectional fiber layer being wound longitudinally of the core, a first cross-binding lying over the fiber layer and a second cross-bind

A rotor blade is made of fiber-reinforced synthetic resin and comprises a moulded core with central, front and rear elements and a foot end fastening element, a unidirectional fiber layer being wound longitudinally of the core, a first cross-binding lying over the fiber layer and a second cross-binding forming a covering for the entire assembly.

대표청구항 ▼

A rotor blade having a foot end, said blade being made of fibre-reinforced synthetic resin material and comprising: a multi-part moulded core having a central spar element having a longitudinal axis, a top and underside, and a front and rear profile element attached to said spar element; a unidirect

A rotor blade having a foot end, said blade being made of fibre-reinforced synthetic resin material and comprising: a multi-part moulded core having a central spar element having a longitudinal axis, a top and underside, and a front and rear profile element attached to said spar element; a unidirectional fibre layer binding arranged at the top and underside in the direction of said longitudinal axis of the spar element, at least part of said unidirectional fibre layer extending over the whole length of said rotor blade; a metallic fastening element for said rotor blade, arranged at said foot end of said blade, said unidirectional fibre layer binding being placed around said fastening element whereby said spar element is rigidly connected to said fastening element by said unidirectional fibre layer binding; a first cross-binding lying on said unidirectional fibre layer binding; and a second cross-binding, arranged over the whole of said moulded core with said spar element and said front and rear profile elements attached thereto, said second cross-binding constituting a rotor blade covering; wherein a metallic insert is attached into said rotor blade at the tip thereof, and at least part of said unidirectional fibre layer binding is wound over said fastening element at said foot end of said rotor blade and said insert.