US 7,465,152 B2
Angel wing seals for turbine blades and methods for selecting stator, rotor and wing seal profiles
Tagir Robert Nigmatulin, Greenville, S.C. (US)
Assigned to General Electric Company, Schenectady, N.Y. (US)
Filed on Sep. 16, 2005, as Appl. No. 11/229,096.
Prior Publication US 2007/0224035 A1, Sep. 27, 2007
Int. Cl. F04D 29/08 (2006.01)
U.S. Cl. 415—170.1  [415/174.3] 15 Claims
OG exemplary drawing
 
1. In a turbine having a rotor rotatable about an axis, blades carried by said rotor for rotation therewith and nozzles, a seal between a rotor blade and nozzle for inhibiting ingestion of hot gas from a hot gas flow through the turbine into turbine wheel spaces, comprising:
a seal body extending from a shank of said blade to a tip and generally toward the nozzle;
said seal body comprising a first concave surface defined at said tip, and an outwardly curved surface defined along a length of a body portion extending from the rotor to said tip, said outwardly curved surface is radially inward from said first concave surface and extends outwardly from said seal body.