Reheat systems for gas turbine engines
AssigneeROLLS-ROYCE plc
InventorsDavid O. Davies, Michael Sherwood
Life of this patent
Estimating the term…
Abstract
The outermost gutter of a reheat system has an extended outer wall to two or three times the length of the inner wall of the outermost gutter. This causes a single vortex to develop instead of the usual two vortices giving an increased basic burning stability. The outer wall also protects the jet pipe from excess heat.
Claims13
A reheat system for a gas turbine engine having a jet pipe, said reheat system comprising:
- a plurality of gutters, said gutters being annular in shape and being coaxially arranged in the jet pipe of said engine;
- fuel injection means, said fuel injection means being operable for injecting fuel into said jet pipe upstream of said plurality of gutters, the radially outermost gutter having an outer wall and an inner wall to define a substantially channel shaped cross-section, said outer wall being located adjacent to the wall of said jet pipe and extending along the length of said jet pipe for a substantially further distance than said inner wall, and said outer wall comprising an upstream portion and a downstream portion, said upstream portion being arranged at a small acute angle to the axis of said jet pipe, and said downstream portion being arranged substantially parallel to the axis of said jet pipe.
A reheat system for a gas turbine engine having a jet pipe, said reheat system comprising a plurality of gutters, said gutters being annular in shape and being coaxially arranged in the jet pipe of said engine, fuel injection means, said fuel injection means being operable for injectiong fuel into said jet pipe upstream of said plurality of gutters, the radially outermost gutter having an outer wall and an inner wall to define a substantially channel shaped cross-section, said outer wall having an axial length at least twice the length of said inner wall and being located adjacent to the wall of said jet pipe and extending axially along the length of said jet pipe for a substantially further distance than said inner wall.
Dependencies are inferred from the claim text.