公开(公告)号：US09797269B2

公开(公告)日：2017-10-24

申请号：US14593418

申请日：2015-01-09

Applicant: ROLLS-ROYCE PLC

Inventor： Dale Edward Evans ,  Mickael Drozdz ,  David Laker Christmas

IPC: F01D21/04 ,  F01D25/24

CPC classification number: F01D21/045 ,  F01D25/243 ,  F05D2220/36 ,  F05D2240/14 ,  Y02T50/672

Abstract: Fan containment system fitting around an array of radially extending fan blades mounted on a hub in an axial gas turbine engine. The fan containment system includes a fan case having an annular casing element for encircling the array of fan blades and a hook projecting in a radially inward direction from the annular casing element and positioned axially forward of the array of fan blades when the fan containment system fitted around fan blades. An annular fan track liner positioned substantially coaxial to the annular casing element. Clamping arrangement connects fan track liner to the hook. Clamping arrangement is configured under the condition that a fan blade impacts the fan track liner, the clamping arrangement releases connection between the hook and a portion of fan track liner so that a portion of the fan track liner can move towards the annular casing element to encourage the fan blade to impact the hook.

公开(公告)号：US09677417B2

公开(公告)日：2017-06-13

申请号：US14593623

申请日：2015-01-09

Applicant: ROLLS-ROYCE PLC

Inventor： Mickael Drozdz

IPC: F01D21/04 ,  F04D29/52

CPC classification number: F01D21/045 ,  F04D29/526 ,  F05D2220/36 ,  F05D2240/14 ,  Y02T50/672

Abstract: A fan containment system has a fan case having an annular casing element for encircling an array of fan blades and a hook projecting generally radially inwardly from the annular casing element. An annular fan track liner is positioned substantially coaxial to the annular casing element, and positioned such that a forward end of the fan track liner is axially spaced from the hook so that there is a gap between the hook and the fan track liner. A bridge member spans the gap between the hook and the fan track liner, wherein the bridge member is connected to the hook and contacts a radially inner surface of the forward end of the fan track liner. The bridge member fails when impacted by a fan blade released from a hub so that the released fan blade can impact the hook and be contained by the fan containment system.