Exhaust nozzle for a gas turbine engine
AssigneeROLLS-ROYCE plc
InventorsIan A Mitchell, Michael J Westlake
Life of this patent
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Abstract
An exhaust nozzle for a gas turbine engine includes a nozzle casing having top and bottom walls and side walls. A liner is provided within the nozzle casing to define a cooling passage. The top and bottom walls each include mutually inclined planar wall portions which meet at respective creases. The creases increase the rigidity of the top and bottom walls. In addition, the inclined wall portions cause the cooling passage to taper in the direction outwardly from the creases, so assisting in the cooling air distribution over the liner.
Claims10
An exhaust nozzle for a gas turbine engine, the exhaust nozzle comprising:
- a four-walled nozzle casing having a top and a bottom wall and two side walls that interconnect the top and the bottom walls,
- wherein at least one of the top and the bottom walls comprises at least two mutually inclined planar wall portions, the mutually inclined planar wall portions meeting each other at a crease extending parallel to a flow direction through the exhaust nozzle, and
- a four-walled liner disposed within the nozzle casing providing a cooling passage between the nozzle casing and the liner, the liner being planar over the extent of the respective top or bottom wall, and
- wherein the cooling passage is a continuous channel being formed around a circumference of the nozzle casing between the nozzle casing and the liner.
An exhaust nozzle for a gas turbine engine, the exhaust nozzle comprising:
- a nozzle casing having a top and a bottom wall and side walls that interconnect the top and the bottom walls,
- wherein at least one of the top and the bottom walls comprises at least two mutually inclined planar wall portions, the mutually inclined planar wall portions meeting each other at a crease extending parallel to a flow direction through the exhaust nozzle, and
- a liner disposed within the nozzle casing providing a cooling passage between the nozzle casing and the liner, the liner being planar over the extent of the respective top or bottom wall, and
- wherein the cooling passage is a continuous channel being formed around a circumference of the nozzle casing between the nozzle casing and the liner, and
- wherein, as viewed in transverse cross-section, the cooling passage tapers from the crease to the side walls and the cooling passage has a thickest portion at the crease.
Dependencies are inferred from the claim text.