US 12,134,971 B2
Trunnion retention for a turbine engine
Brandon Wayne Miller, Cincinnati, OH (US); Ian Francis Prentice, Cincinnati, OH (US); and Daniel Alan Niergarth, Cincinnati, OH (US)
Assigned to General Electric Company, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Mar. 26, 2021, as Appl. No. 17/213,503.
Application 17/213,503 is a division of application No. 16/108,133, filed on Aug. 22, 2018, granted, now 11,053,812.
Application 16/108,133 is a division of application No. 14/747,132, filed on Jun. 23, 2015, granted, now 10,077,674, issued on Sep. 18, 2018.
Prior Publication US 2021/0215062 A1, Jul. 15, 2021
Int. Cl. F01D 21/04 (2006.01); B64C 11/06 (2006.01); F01D 5/30 (2006.01); F01D 7/00 (2006.01); F01D 25/16 (2006.01); F02C 3/04 (2006.01); F04D 29/32 (2006.01); F04D 27/02 (2006.01)
CPC F01D 21/045 (2013.01) [B64C 11/06 (2013.01); F01D 5/3007 (2013.01); F01D 5/3023 (2013.01); F01D 5/3069 (2013.01); F01D 7/00 (2013.01); F01D 25/162 (2013.01); F02C 3/04 (2013.01); F04D 29/323 (2013.01); F04D 27/0292 (2013.01); F05D 2220/32 (2013.01); F05D 2220/36 (2013.01); F05D 2240/24 (2013.01); F05D 2240/35 (2013.01); F05D 2240/50 (2013.01); F05D 2240/80 (2013.01); F05D 2260/30 (2013.01); F05D 2260/33 (2013.01); F05D 2260/74 (2013.01); F05D 2260/79 (2013.01); Y02T 50/60 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A fan for a gas turbine engine comprising:
a fan blade;
a trunnion mechanism defining a radial direction and an axial direction, the trunnion mechanism comprising a trunnion and a primary attachment system, the trunnion including a platform for an attachment to the fan blade, the platform having an outer surface and defining a slot extending generally along the radial direction to a radially outer end of the slot for receipt of a root of the fan blade;
a disk having a generally annular shape and comprising a disk segment, the trunnion extending at least partially through the disk segment and attached to the disk segment using the primary attachment system;
a retention ring positioned outward from the disk along the radial direction of the trunnion mechanism, having a generally annular shape and comprising at least one retention member defining an auxiliary support channel with the outer surface of the platform of the trunnion, the at least one retention member positioned outward from the disk along the radial direction and blocking fan blade removal from the attachment of the platform;
at least one retention feature positioned in the auxiliary support channel;
wherein the at least one retention member blocks the radially outer end of the slot of the platform when the at least one retention feature is positioned in the auxiliary support channel;
wherein the retention ring is positioned outward of the disk along the radial direction.