Reduced stress aircraft propeller blade root structure

Details Reduced stress aircraft propeller blade root structure Reduced stress aircraft propeller blade root structure

B - Operations, Transporting

64

C

244/120

B64C 11/16 (2006.01) B64C 11/20 (2006.01)

Patent

CA 1165299

Abstract of the Disclosure A propeller blade of the type having an airfoil shell bonded to a spar received within the interior of the shell is provided with a shell closure member which covers the root end of the shell and includes an opening therein which receives the spar. The closure member enhances the structural integrity of the shell, redistri- buting and minimizing stresses in the shell root and includes a collar upstanding therefrom, the spar being received through the collar and bonded to the inner surface thereof, thereby increasing the area of the shell-to-spar bond for stress reduction therein.

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