Blade and airfoil damping configurations

Patent · Tue May 24 04:00:00 EDT 2022

OSTI ID:1892954

Hart, Andrew Clifford; Li, Jing; Chakrabarti, Suryarghya; Balkcum, III, James Tyson; Feigl, Markus

The present embodiments set forth a blade including an airfoil, the airfoil including a tip cap, a pressure sidewall and a suction sidewall extending axially between corresponding leading and trailing edges and radially between the base and the tip cap. The blade, including the airfoil and base, being formed in at least two airfoil parts, each of the two airfoil parts including contacting edges engaging each other respective contacting edges, the contacting edges defining a joint for preloading each of the at least two parts with each other and with the base. The at least two airfoil parts forming the airfoil being retained to each other by an interference fit at the joint. The interference fit providing frictional damping of vibrations in the blade during blade operation.

• Research Organization: General Electric Co., Schenectady, NY (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FE0031613
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): 11,339,665
• Application Number: 16/816,568
• OSTI ID: 1892954
• Country of Publication: United States
• Language: English