Turbine exhaust duct having shielding conduits
AssigneePratt & Whitney Canada Corp.
InventorsGuy Lefebvre, Francois Doyon
Life of this patent
Estimating the term…
Abstract
A turbine exhaust duct (TED) for an aircraft engine, has: an annular inlet conduit extending around a central axis for directing combustion gases generally in an axial direction; outlet conduits communicating with the inlet conduit and extending generally radially outward relative to the inlet conduit, the outlet conduits extending from inlet ends at intersections with the inlet conduit to outlet ends, the outlet conduits having transition areas transitioning from a mainly axial direction to a mainly radial direction; and shielding conduits received into the outlet conduits, the shielding conduits overlapping the transition areas of the outlet conduits.
Claims16
A turbine exhaust duct (TED) for an aircraft engine, comprising:
- an annular inlet conduit extending around a central axis for directing combustion gases along a direction having an axial component;
- outlet conduits communicating with the inlet conduit and extending away from the inlet conduit and from the central axis, the outlet conduits extending from inlet ends at intersections with the inlet conduit to outlet ends, the outlet conduits having transition areas upstream of the outlet ends relative to a flow of the combustion gases, the transition areas transitioning from a mainly axial direction to a mainly radial direction relative to the central axis and along the flow of the combustion gases;
- and
- shielding conduits received into the outlet conduits, the shielding conduits overlapping the transition areas of the outlet conduits.
A reverse-flow gas turbine engine, comprising:
- an outer case assembly extending around a central axis and enclosing a core, the core including a compressor section, a combustor, and a turbine section, the turbine section located forward of the combustor and of the compressor section relative to a direction of travel of the reverse-flow gas turbine engine, the outer case assembly including an exhaust case defining openings;
- a turbine exhaust duct fluidly communicating with the turbine section for receiving combustion gases, the turbine exhaust duct having:
- an annular inlet conduit extending around the central axis;
- and
- outlet conduits communicating with the inlet conduit and extending away from the inlet conduit and from the central axis, the outlet conduits extending from inlet ends at intersections with the inlet conduit to outlet ends, the outlet conduits having transition areas upstream of the outlet ends relative to a flow of the combustion gases, the transition areas transitioning from a mainly axial direction to a mainly radial direction relative to the central axis and along the flow of the combustion gases;
- and
- shielding conduits received into the outlet conduits, the shielding conduits overlapping the transition areas of the outlet conduits.
Dependencies are inferred from the claim text.