Patent ID: 9238968
Filing Date: 2016-01-19
CPC Classification: F01D,F05D

Claim Text:
1. A vane for directing hot gases in a gas turbine engine, the vane including: a hollow aerofoil portion, which in use spans the working gas annulus of the engine, and an impingement tube which forms a covering over the interior surface of the aerofoil portion and which has jet-forming apertures formed therein for the production of impingement cooling jets; wherein the impingement tube includes two tube portions which are separately insertable into position into the aerofoil portion to form the covering, one of the tube portions is positioned forward in the aerofoil portion and the other tube portion is positioned rearward in the aerofoil portion, and an expansion member which, when the tube portions are in position in the aerofoil portion, is locatable in the aerofoil portion to urge each tube portion outwardly and thereby holds the tube portions in position against the aerofoil portion.