公开(公告)号：US20190381567A1

公开(公告)日：2019-12-19

申请号：US16413025

申请日：2019-05-15

Applicant: ROLLS-ROYCE plc

Inventor： Adam P. CHIR ,  Richard MELLOR

IPC: B22F3/105

Abstract: A powder deposition apparatus has a build plate, a powder source, a recoater arm, and an energy beam. The recoater arm is formed from ferromagnetic material. The recoater arm is arranged to deliver a layer of powder from the powder source across the working surface of the build plate prior to the energy beam fusing a predetermined portion of the delivered powder layer. The recoater arm comprises a magnetic portion.

公开(公告)号：US20180283693A1

公开(公告)日：2018-10-04

申请号：US15923570

申请日：2018-03-16

Applicant: ROLLS-ROYCE PLC

Inventor： Ian M. GARRY ,  Mark GLOVER ,  Richard MELLOR ,  Frederic WITHAM

IPC: F23R3/28 ,  F23R3/34 ,  F02C7/228 ,  F02C7/22

Abstract: A fuel injector provided for gas turbine engine has a nozzle including pilot fuel and mains fuel discharge orifice's for respectively spraying pilot and mains fuel flows into a combustor of the engine. The injector further has a feed arm extending to the nozzle for feeding fuel to the pilot and mains discharge orifices from pilot and mains supplies respectively. The nozzle and the feed arm contain one or more pilot passages for flow of the pilot fuel flow from the pilot supply to the pilot discharge orifice and one or more mains passages for flow of the mains fuel flow from the mains supply to the mains discharge orifice. The nozzle and the feed arm contain a plurality of the pilot passages and/or a plurality of the mains passages. The pilot and the mains passages intertwine repeatedly, and are both smoothly curved as they intertwine around each other.