Full ring inner air-seal with locking nut

摘要

A vane assembly has a vane including an inner platform with a mount rail extending radially inwardly toward an engine center axis. An air seal is attached to the inner platform. The air seal has a single-piece ring extending circumferentially about the engine center axis. A ring nut secures the air seal to the inner platform. A biasing member cooperates with the ring nut and air seal to seal fore and aft locations on the vane.

主权项

1. A turbine section comprising:
at least first and second turbine rotors each carrying turbine blades for rotation about a central axis, said first and second turbine rotors each having at least one rotating seal at a radially inner location; a vane assembly including a vane extending from a platform; an air seal attached to the vane assembly, the air seal comprising a ring extending circumferentially about the axis; a ring nut received on the air seal for axially securing the air seal to the vane assembly; and a biasing member reacting against the ring nut to prevent the ring nut from being removed from the air seal once the ring nut is installed.