Patent ID: 9683490
Date: 2017-06-20
CPC Classifications: F01D,F02C,F02K,F05D

Claim:
1. A fan containment system for fitment around an array of radially extending fan blades mounted on a hub in an axial gas turbine engine, the fan containment system comprising: an annular casing element for encircling an array of fan blades; a hook projecting in a generally radially inward direction from the annular casing element; a fan track liner connected to the hook via a fastener configured so as to permit movement of the fan track liner relative to the hook, the fan track liner having a forward end proximal to the hook and a rearward end distal to the hook; a voidal region provided between the annular casing element and a forward portion of the fan track liner; and a pivot member protruding radially inward from the annular casing element and being arranged and positioned between the forward and rearward end of the fan track liner such that a forward portion of the fan track liner is pivotable about the pivot member, so that upon release of a fan blade the forward portion of the fan track liner pivots about the pivot member into the voidal region provided between the annular casing element and the forward portion of the fan track liner to encourage engagement of the hook with a released fan blade.