公开(公告)号：US20240392855A1

公开(公告)日：2024-11-28

申请号：US18670836

申请日：2024-05-22

Applicant: ROLLS-ROYCE plc

Inventor： Victor P A MEDEAU ,  Silvestre T. PINHO ,  Lorenzo MENCATTELLI ,  Emile S. GREENHALGH ,  Soraia PIMENTA ,  MohammadErfan KAZEMI ,  James A. FINLAYSON

IPC: F16F7/00 ,  F01D5/28

Abstract: A kinetic energy absorptive composite article comprising a plurality of plies, and a method of manufacturing the kinetic energy absorptive composite article. Each ply comprises a plurality of substantially parallel fibers encapsulated within a resin. A plurality of localised weaknesses are comprised within the fibers of the kinetic energy absorptive composite article, the locations of the plurality of localised weaknesses forming a pre-defined pattern. The pre-defined pattern comprises a first sub-pattern and a second sub-pattern superposed upon the first sub-pattern. The first sub-pattern is configured so that a crack formed by an impact event propagates substantially along a predetermined fracture path to separate the kinetic energy absorptive composite article into at least a first portion and a second portion and the second sub-pattern is configured to set a threshold below which the crack does not propagate.

公开(公告)号：US20240269958A1

公开(公告)日：2024-08-15

申请号：US18424036

申请日：2024-01-26

Applicant: ROLLS-ROYCE plc

Inventor： Victor P. A. MEDEAU ,  Silvestre T. PINHO ,  Lorenzo MENCATTELLI ,  Emile S. GREENHALGH ,  Soraia PIMENTA ,  Paul ROBINSON ,  MohammadErfan KAZEMI ,  James A. FINLAYSON

IPC: B32B5/12 ,  B32B7/022 ,  F01D25/24

CPC classification number: B32B5/12 ,  B32B7/022 ,  F01D25/24 ,  B32B2260/023 ,  B32B2260/046 ,  B32B2262/106 ,  B32B2307/54 ,  B32B2307/56 ,  B32B2603/00 ,  F05D2300/603

Abstract: A containment structure for a propulsion device, comprising a plurality of laminates arranged in a stack for absorbing projectile impact from the propulsion device, each laminate comprising a multi-ply composite of fibre reinforcement material and matrix material. The plurality of laminates comprises a plurality of primary laminates and a plurality of secondary laminates provided in an alternating arrangement along a stacking direction S of the containment structure. The primary laminates comprise a first fibre reinforcement material and the secondary laminates comprises a second fibre reinforcement material. The first fibre reinforcement material has a higher elongation to failure than the second fibre reinforcement material.