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US 12,503,954 B2Granted
Center-tie shaft tensioning
AssigneeRtx Corporation
InventorJustin Roger DeLarm
Life of this patent
Estimating the term…
Abstract
A turbine engine rotor has: a central shaft; a disk stack having a plurality of disks encircling the shaft and having a hub mounted to the shaft; a nut threaded to the shaft; and a spacer between the hub and the nut, the nut holding the stack in compression via the spacer. The hub has a compartment at least partially containing the spacer with an outer wall inner diameter surface facing an outer diameter surface of the spacer.
Claims20
A turbine engine rotor comprising:
- a central shaft;
- a disk stack having a plurality of disks encircling the shaft and having a hub mounted to the shaft;
- a nut threaded to the shaft;
- and
- a spacer between the hub and the nut, the nut holding the stack in compression via the spacer, wherein:
- the spacer has a radial span and an axial length of 40% to 200% of said radial span:
- and
- the hub has a compartment at least partially containing the spacer with an outer wall inner diameter surface facing an outer diameter surface of the spacer.
5 more elements
A turbine engine rotor comprising:
- a central shaft;
- a disk stack having a plurality of disks encircling the shaft and having a hub mounted to the shaft;
- a nut threaded to the shaft;
- and
- a spacer between the hub and the nut, the nut holding the stack in compression via the spacer, wherein:
- the spacer has a rectangular cross-section, optionally with chamfered or rounded corners;
- and
- the hub has a compartment at least partially containing the spacer with an outer wall inner diameter surface facing an outer diameter surface of the spacer.
5 more elements
A turbine engine rotor comprising:
- a central shaft;
- a disk stack having a plurality of disks encircling the shaft and having a hub mounted to the shaft;
- a nut threaded to the shaft;
- and
- a spacer between the hub and the nut, the nut holding the stack in compression via the spacer, wherein:
- the hub has a compartment at least partially containing the spacer with an outer wall inner diameter surface facing an outer diameter surface of the spacer;
- and
- the spacer has an axial length and the compartment has an axial length of 70% to 150% of said spacer axial length.
5 more elements
A method for manufacturing a turbine engine rotor, the turbine engine rotor comprising:
- a central shaft;
- a disk stack having a plurality of disks encircling the shaft and having a hub mounted to the shaft;
- a nut threaded to the shaft;
- and
- a spacer between the hub and the nut, the nut holding the stack in compression via the spacer, wherein:
- the hub has a compartment at least partially containing the spacer with an outer wall inner diameter surface facing an outer diameter surface of the spacer,
- the method comprising:
- interference fitting the spacer to the compartment;
- after the interference fitting, assembling the hub to the shaft;
- and
- after the assembling, threading the nut to the shaft.
8 more elements
Dependencies are inferred from the claim text.