Fan Assembly With Fan Blade Under-Root Spacer

摘要

A fan assembly is disclosed which includes a rotor having an outer periphery and at least one slot extending radially inwardly through the outer periphery. The slot terminates at a base surface disposed at a radial depth from the outer periphery of the rotor. The fan assembly also includes at least one fan blade that includes an airfoil connected to a root. The root is received in the slot. The root terminates in an inner face having a radial length that is less than the radial depth of the Slot to define a gap between the inner face of the root and the base surface of the slot when the root is bias away to the base surface of the slot. A spacer is disposed within a gap, wherein a spacer is fabricated from a polymer, which may be a composite material such as a polymer embedded with reinforcing materials such as carbon fibers and glass fibers.

主权项

1. A fan assembly comprising:
a rotor having an outer periphery and at least one slot extending radially inwardly through the outer periphery and terminating at a base surface disposed at a radial depth from the outer periphery of the rotor; at least one fan blade including an airfoil connected to a root, the root being received in the slot, the root terminating at an inner face and having a radial length that is less than the radial depth of the slot to define a gap between the inner face of the root and the base surface of the slot; a spacer disposed in the gap, the spacer being fabricated from a polymer.