Airfoils including compliant tip

摘要

An airfoil, a fan assembly and an engine include at least one airfoil including a root portion, a body portion and a tip portion. The body portion is configured extending radially outward from the root portion and the tip portion is configured extending radially outward from the root portion and the body portion. The airfoil including a suction and a pressure side coupled together at a leading and a trailing edge and extending therebetween. The airfoil including a compliant tip at the tip portion. The compliant tip extending along at least a portion of the tip portion in a chord-wise direction and a span-wise direction. The compliant tip is configured to provide wave propagation along the tip portion such that critical strain proximate the tip portion and the trailing edge is reduced during a foreign object impact.

主权项

1. An airfoil comprising:
a root portion, a body portion and a tip portion, wherein the body portion is configured extending radially outward from the root portion and wherein the tip portion is configured extending radially outward from the root portion and the body portion; a suction side and a pressure side coupled together at a leading edge and a trailing edge spaced chord-wise and downstream from the leading edge; and a compliant tip extending along at least a portion of the tip portion in a chord-wise direction and a span-wise direction, wherein the compliant tip is configured to provide wave propagation along the tip portion such that critical strain proximate the tip portion and the trailing edge is reduced during a foreign object impact, and wherein the body portion is comprised of a composite material.