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Title: Tip cap for a turbine rotor blade

A turbine rotor blade with a spar and shell construction, and a tip cap that includes a row of lugs extending from a bottom side that form dovetail grooves that engage with similar shaped lugs and grooves on a tip end of the spar to secure the tip cap to the spar against radial displacement. The lug on the trailing edge end of the tip cap is aligned perpendicular to a chordwise line of the blade in the trailing edge region in order to minimize stress due to the lugs wanting to bend under high centrifugal loads. A two piece tip cap with lugs at different angles will reduce the bending stress even more.
Authors:
Publication Date:
OSTI Identifier:
1128688
Report Number(s):
8,678,764
12/606,463
DOE Contract Number:
FG02-07ER84668
Resource Type:
Patent
Research Org:
Florida Turbine Technologies, Inc., Jupiter, FL, USA
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING