US 12,215,715 B1
Engine trim balance system
Enzo DiBenedetto, Berlin, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Aug. 3, 2023, as Appl. No. 18/229,967.
Int. Cl. F04D 29/66 (2006.01); F16F 15/32 (2006.01)
CPC F04D 29/662 (2013.01) [F16F 15/322 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A balancing system comprising:
a rotor hub having a center axis;
a balancing ring surrounding the rotor hub, the balancing ring including a plurality of ring teeth, wherein the balancing ring has a first portion defining a first weight characteristic, a second portion defining a second weight characteristic that is greater than the first weight characteristic, and an inner peripheral surface, and wherein the first portion comprises a section of the balancing ring where a portion of the inner peripheral surface is spaced from an outer peripheral surface of the rotor hub by a gap, and wherein the second portion comprises a section of the balancing ring that does not include the gap; and
a pinion gear including a plurality of gear teeth in meshing engagement with the plurality of ring teeth, wherein the pinion gear is selectively rotated to adjust a position of the balancing ring relative to the rotor hub.