Patent ID: 11970948
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. An apparatus for a gas turbine engine, comprising:
an annular engine flowpath extending circumferentially around a centerline;
a protuberance projecting into the engine flowpath; and
a variable vane extending across the engine flowpath, the variable vane comprising a pivot axis and an airfoil, and the variable vane configured to pivot about the pivot axis between a first position and a second position;
the airfoil extending spanwise along a span line between a first end and a second end, the airfoil extending chordwise along a chord line between a leading edge and a trailing edge, and the airfoil extending laterally between a first side and a second side;
a first section of the airfoil disposed at the first end, the first section at the first end circumferentially offset from the protuberance when the variable vane is in the first position and in the second position; and
a second section of the airfoil disposed spanwise between the first section and the second end, the second section circumferentially offset from the protuberance when the variable vane is in the first position, and the second section circumferentially overlapping the protuberance when the variable vane is in the second position.