Integrally bladed fan rotor
AssigneePratt & Whitney Canada Corp.
InventorsAndreas Eleftheriou, Richard Ivakitch, David Menheere
Life of this patent
Estimating the term…
Abstract
An integrally bladed fan (IBF) rotor of a gas turbine engine. The IBF rotor includes a hub and a plurality of fan blades extending radially outwardly from the hub and integral therewith. The hub has a fan attachment flange disposed at an end of the hub on a trailing edge side thereof for mounting a booster rotor to a trailing edge side of the fan. The fan attachment flange is disposed at a radial distance from a longitudinal center axis of the integrally bladed fan rotor. The hub has an outer hub surface disposed radially inward from the radial distance of the fan attachment flange.
Claims20
An integrally bladed fan rotor of a gas turbine engine, comprising a hub and a plurality of fan blades extending radially outwardly from the hub and integral therewith, the hub having a fan attachment flange disposed at an end of the hub on a trailing edge side thereof for mounting a booster rotor to a trailing edge side of the integrally bladed fan rotor, the fan attachment flange disposed at a radial distance from a longitudinal center axis of the integrally bladed fan rotor, the hub defining an outer peripheral surface extending circumferentially about of-the hub and disposed radially inward from the radial distance of the fan attachment flange, the plurality of fan blades entirely disposed radially outwardly from the outer peripheral surface of the hub.
A gas turbine engine, comprising:
- a rotatable booster stage having alternating rows of booster stator vanes and booster rotor blades, the booster rotor blades attached to a booster attachment flange disposed at an end of the booster stage on a leading edge side thereof upstream of the rows of booster stator vanes and booster rotor blades;
- and an integrally bladed fan rotor disposed upstream of the booster stage, the fan rotor comprising a hub and a plurality of fan blades extending radially outwardly from the hub and integral therewith, the hub having a fan attachment flange disposed at an end of the hub on a trailing edge side thereof and mounted to the booster attachment flange, the fan attachment flange disposed at a radial distance from a longitudinal center axis of the gas turbine engine, the hub defining an outer peripheral surface extending circumferentially about the hub and disposed radially inward from the fan attachment flange, the plurality of fan blades entirely disposed radially outwardly from the outer peripheral surface of the hub.
A method of manufacturing an integrally bladed fan rotor, comprising:
- integrally forming a hub and a plurality of fan blades extending radially outwardly from the hub, the hub having a circumferential fan attachment flange disposed at an end of the hub on a trailing edge side thereof;
- and an outer peripheral surface extending circumferentially about of-the hub and disposed radially inward from the fan attachment flange, the plurality of fan blades entirely disposed radially outwardly from the outer peripheral surface of the hub.
Dependencies are inferred from the claim text.