An improved airfoil structure

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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F01D 5/14 (2006.01) F01D 9/02 (2006.01)

Patent

CA 2177818

Past airfoil (44) configurations have been used to improve aerodynamic performance and engine (10) efficiencies. The present airfoil (44) configuration fur- ther increases component life and reduces maintenance by reducing internal stress within the airfoil (44) itself. The airfoil (44) includes a chord (62) and a span (60). Each of the chord (62) and the span (60) has a bow (70, 72) being summed to form a generally "C" configura- tion of the airfoll (44). The generally "C" configuration includes a compound bow (70, 72) in which internal stresses resulting from a thermal temperature gradient are reduced. The structural configuration reduces in- ternal stresses resulting from thermal expansion.

Les configurations d'élément à profil aérodynamique classiques (44) ont été utilisées pour améliorer la performance aérodynamique et le rendement du moteur (10). La configuration d'élément à profil aérodynamique (44) de la présente invention augmente encore la durée de vie des pièces et réduit la maintenance grâce à la réduction de la contrainte interne au sein de l'élément à profil aérodynamique même. Ledit élément à profil aérodynamique (44) comprend une corde d'aile (62) et une envergure (60). La corde d'aile (62) et l'envergure (60) possèdent chacune un arc (70, 72) ajoutés pour former une configuration en "C" d'élément à profil aérodynamique (44). Ladite configuration en "C" comporte un arc (70, 72) composé dans lequel les contraintes internes résultant d'un gradient de température sont réduites. Ladite configuration structurale réduit les contraintes internes résultant de la dilatation thermique.

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