Composite rotor blade having weighted material for mass balancing

摘要

A rotor blade for an aircraft includes a composite portion having fiber-reinforced resin material, the composite portion having an outside surface that forms at least a partial airfoil shape. The weighted portion includes a plurality of weighted material layers and a plurality of fiber-reinforced resin material layers. Weighted material is configured to be compatible with and integrated into composite manufacturing processes used to fabricate the rotor blade. The weighted portion has a higher density than the composite portion and positioned to produce desired mass balance characteristics of the rotor blade.

主权项

1. A rotor blade for an aircraft, the rotor blade comprising:
a composite portion having fiber-reinforced resin material, the composite portion having an outside surface that forms at least a partial airfoil shape; a weighted portion comprising:
a plurality of weighted material layers;a plurality of fiber-reinforced resin material layers; wherein the each weighted material layer is adjacent with at least one fiber-reinforced resin material layer; wherein the each weighted material layer is cross-linked with the adjacent fiber-reinforced resin material layer thereby retaining the each weighted material layer; wherein a thickness of each of the plurality of composite layers is equal to a thickness of each of the plurality of weighted layers; and wherein the weighted portion has a higher density than the composite portion.