Patent ID: 8777576
Filing Date: 2014-07-15
Classification: F01D,F04D,F05D,Y02T

Abstract:
1. A fan rotor assembly comprising: a rotor including an annular array of dovetail slots; an array of blades each having a dovetail engaged in one of the dovetail slots of the rotor, and an airfoil extending radially outward from the dovetail wherein a plurality of spaces are present between adjacent ones of the fan blades; an array of platforms disposed in the spaces between adjacent fan blades, each platform comprising: a metallic arcuate body with opposed forward and aft ends and opposed lateral edges; and a pair of frangible wings that extend from the lateral edges laterally and radially outwards away from the rotor beyond the body towards the fan blades, wherein a gap is present between each lateral edge of each of the platforms and the adjacent fan blade.