Rotor disk boss

Patent metadata

Field	Value
Publication number	US-10458243-B2
Application number	US-201815954118-A
Country	US
Kind code	B2
Filing date	Apr 16, 2018
Priority date	Jan 20, 2015
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

The present disclosure provides devices and methods related to rotor disk bosses. For example, a rotor disk assembly comprises a first rotor disk, wherein the first rotor disk comprises a web, disposed between a rim and a bore. The rotor disk assembly further comprises a second rotor disk operatively coupled to the first rotor disk, an inter-disk device disposed on the second rotor disk and extending axially toward the first rotor disk, and a boss disposed on the first rotor disk, wherein the boss protrudes axially from the web toward the inter-disk device.

First claim

What is claimed is:

1. A method for designing a rotor disk assembly, the method comprising:
determining a probable point of contact on a first rotor disk in response to an inter-disk device failure, wherein:
the first rotor disk comprises a web that is disposed between a rim and a bore;
the bore abuts the web at a web foot that is a radially inwardmost portion of the web;
the rotor disk assembly further comprises a second rotor disk operatively coupled to the first rotor disk;
the inter-disk device is disposed on the second rotor disk and extends axially toward the first rotor disk; and
the inter-disk device comprises a spacer arm that is a portion of the inter-disk device that extends farthest axially from the second rotor disk; and

redesigning the first rotor disk to include a boss at the probable point of contact.

2. The method of claim 1 , further comprising adding material at the probable point of contact to create the boss such that:
the boss protrudes axially from the web toward the spacer arm of the inter-disk device;
a distance is defined between the spacer arm and the boss;
a radial-direction span of the boss is radially aligned with the spacer arm;
the boss is disposed radially outward of, and immediately adjacent to, the web foot;
the boss comprises a planar surface extending radially; and
the web foot extends axially outward and away, relative to a radius of the first rotor disk, from a radial inner edge of the planar surface.

3. The method of claim 1 , further comprising determining the life cycle of a rotor disk.

4. The method of claim 1 , further comprising improving the manufacturability of the rotor disk.

Assignees

• United Technologies Corp

Inventors

• Corcoran Kevin L
• Grosso Jody M
• St Mary Christopher

Classifications

• F01D5/12

  Blades ({specially adapted for radial flow machines or engines F01D5/04}; blade roots F01D5/30; rotors with blades adjustable in operation F01D7/00; stator blades F01D9/02) · CPC title

• F01D25/00

  Component parts, details, or accessories, not provided for in, or of interest apart from, other groups · CPC title

• F01D5/06

  Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {(F01D5/022, F01D5/023 take precedence)} · CPC title

• F05D2240/24

  for turbines · CPC title

• F01D5/022 Primary

  with concentric rows of axial blades · CPC title