US 12,326,114 B2
Gas turbine engine with core debris protection
Michael G. McCaffrey, Windsor, CT (US); Anthony R. Bifulco, Ellington, CT (US); and Daniel B. Kupratis, Wallingford, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Aug. 15, 2023, as Appl. No. 18/450,040.
Prior Publication US 2025/0059915 A1, Feb. 20, 2025
Int. Cl. F02C 7/052 (2006.01); F02C 7/04 (2006.01); F02C 7/057 (2006.01); F02C 9/20 (2006.01); F02K 3/06 (2006.01); F02K 3/075 (2006.01); F04D 29/32 (2006.01); F04D 29/56 (2006.01)
CPC F02C 7/052 (2013.01) [F02C 7/04 (2013.01); F02C 7/057 (2013.01); F02K 3/075 (2013.01); F04D 29/323 (2013.01); F04D 29/563 (2013.01); F02C 9/20 (2013.01); F02K 3/06 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A gas turbine engine comprising:
a fan having a plurality of fan blades received within a fan case, said fan rotating with a rotating cone;
the fan delivering air into a bypass duct radially outwardly of a core splitter housing having a leading edge, and radially inwardly of the core splitter housing into a core engine path leading to a compressor section;
the rotating cone having a rotating bulge defining a radially outermost point of the rotating cone relative to a rotational axis of the fan blades and cone, the rotating bulge defined by a radially outwardly extending forward portion leading to the radially outermost point on the bulge and then a radially inwardly extending portion aft of the radially outermost point of the bulge leading into the core engine path within the core splitter housing, and the bulge radially outermost point being upstream of the leading edge of the core splitter housing, the bulge radially outermost point being a first radial distance from a rotational axis, and the leading edge of the core splitter housing being at a second radial distance of the rotational axis, and a ratio of the first radial distance to the second radial distance being at least 0.95; and
wherein an upstream fan exit guide vane is positioned downstream of the fan blades and upstream of the leading edge of the core splitter housing, wherein the upstream fan exit guide vane is aligned with the rotating bulge.