US 12,146,415 B2
Systems and methods for multi-dimensional variable vane stage rigging utilizing adjustable bracket plates
Ryan Humes, Indianapolis, IN (US); Andrew Eifert, Indianapolis, IN (US); and Paulo Bazan, Indianapolis, IN (US)
Assigned to Rolls-Royce North American Technologies Inc., Indianapolis, IN (US)
Filed by Rolls-Royce North American Technologies Inc., Indianapolis, IN (US)
Filed on Dec. 30, 2022, as Appl. No. 18/091,919.
Prior Publication US 2024/0218805 A1, Jul. 4, 2024
Int. Cl. F01D 17/16 (2006.01); F02C 9/22 (2006.01)
CPC F01D 17/162 (2013.01) [F02C 9/22 (2013.01); F05D 2220/32 (2013.01); F05D 2230/60 (2013.01); F05D 2240/12 (2013.01); F05D 2260/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A vane adjustment assembly for a gas turbine engine, comprising
a plurality of vanes extending radially outward relative to a central axis of the gas turbine engine,
an annular ring arranged radially outward of the central axis and coupled to the plurality of variable vanes, and
a ring adjustment plate assembly including
a main plate portion arranged on a radially outer surface of the annular ring and including a first adjustment region defined between a first wall extending radially outwardly away from a radially outer surface of the main plate portion and a second wall spaced apart from the first wall and extending radially outwardly away from the radially outer surface of the main plate portion, a first elongated opening being formed through the first adjustment region of the main plate portion, and
a first adjustment fastener removably arranged in the first adjustment region between the first and second walls and including a first adjustment head that is circular and a first fastening pin eccentrically coupled to the first adjustment head and removably coupled to the annular ring,
wherein the first adjustment fastener is configured to be selectively arranged at a plurality of rotational positions within the first adjustment region so as to selectively arrange the first fastening pin at a plurality of circumferential positions relative to the first and second walls such that the main plate portion is configured to be positioned at a plurality of distinct circumferential positions each corresponding to a circumferential position of the first fastening pin of the first adjustment fastener.