US 12,134,973 B2
Test blade for gas turbine engine and method of making
Masoud Roshan Fekr, St-Lambert (CA); Rana Foroutan, St-Lambert (CA); and Robert Huszar, Saint-Bruno-de-Montarville (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Mar. 28, 2023, as Appl. No. 18/127,349.
Prior Publication US 2024/0328321 A1, Oct. 3, 2024
Int. Cl. F01D 5/30 (2006.01)
CPC F01D 5/30 (2013.01) [F05D 2220/32 (2013.01); F05D 2230/60 (2013.01); F05D 2240/30 (2013.01); F05D 2260/83 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A test blade for a blade release test, comprising:
an airfoil extending radially from a platform; and
a root portion secured to the platform, the root portion having an elongated opening extending longitudinally from a leading edge of the root portion towards a trailing edge of the root portion, wherein the elongated opening has a width extending along the leading edge of the root portion that is greater than or equal to 3 times a radial height of the elongated opening.