DISPOSITIF DE PRÉVENTION DE BLOCAGES DE TROU D'ALIMENTATION D'AIR DE REFROIDISSEMENT D'ENTRÉE REDONDANTE POUR MOTEUR À TURBINE À GAZ

摘要

A vane ring for a gas turbine engine includes a multiple of vanes that extend between the inner vane platform and the outer vane platform, each of the multiple of vanes contains an airfoil cooling circuit that receives cooing airflow through a respective one of a multiple of feed passages; a multiple of metering passages in the outer vane platform, each of the multiple of metering passages in communication with the respective one of the multiple of feed passages; and a multiple of secondary passages in the outer vane platform, each of the multiple of secondary passages in communication with the respective one of the multiple of metering passages.