Cooling air cooled gas turbine aerofoil
AssigneeROLLS-ROYCE plc
InventorBrian G. Cooper
Life of this patent
Estimating the term…
Abstract
A gas turbine engine is provided with turbine stators which have hollow aerofoils. The aerofoils are internally cooled by a flow of air the path of which is defined by walls. The wall has a curved deflector at its outer end which causes air to flow over the wall end and down the other side of the wall. An extension member ensures that the air does not break away from the surface of the wall and is preferably made from sheet metal so as to provide a light, easily made structure.
Claims11
An air cooled gas turbine aerofoil comprising a hollow aerofoil structure which includes a wall spanning the interior thereof with said interior including interior sides and support portions, said wall extending lengthwise of said aerofoil so that said aerofoil and said wall define cooling air passageways internally of said aerofoil, said wall having one end and a curved cooling air deflector which surrounds said one end of the said wall, said wall having a downstream surface with respect to the effective direction of flow of cooling air through said aerofoil, a plate of heat resistant material removably supported by said wall and said support portions on the aerofoil interior in spaced apart relationship with the interior sides of said aerofoil, and an extension member supported by said plate which is an extension of said curved deflector and which lies parallel to and in spaced relationship with said downstream surface of said wall.
Dependencies are inferred from the claim text.