公开(公告)号：US10822960B2

公开(公告)日：2020-11-03

申请号：US15686737

申请日：2017-08-25

Applicant: ROLLS-ROYCE plc

Inventor： Martin Mottram ,  Paul A Sellers

IPC: F01D5/18 ,  F01D5/20 ,  F01D5/14

Abstract: A blade has a root portion and elongate portion extending from the root portion to a tip. The elongate portion has an aerofoil-shaped cross section having leading and trailing edges and suction and pressure sides. The tip may include a gutter defining squealer. The squealer has a wall extending from the trailing edge and along a substantial portion of the tip perimeter. A main trailing edge cooling channel extends within the elongate portion in a direction from root to tip adjacent the trailing edge and exiting into the gutter. A gallery channel is arranged just behind the gutter and extends from an open end intersecting the main trailing edge cooling channel to a closed end located just behind a trailing edge apogee. Cooling channels extend from the gallery channel and through the squealer wall. The gallery channel diameter is greater at the open end than the closed end.