Patent ID: 7967558
Filing Date: 2011-06-28
Classification: F01D,F02C,F05D,F16J

Abstract:
1. A fan assembly for a tip turbine engine comprising: a fan hub which rotates about an engine centerline; an inducer section mounted to said fan hub, said inducer section defining an airflow passage which turns an airflow from an axial airflow direction to a radial airflow direction; a fan blade section mounted to said inducer section, said fan blade section defining a fan blade core airflow passage generally perpendicular to the engine centerline to receive the airflow from the inducer section; a diffuser section attached to said fan blade, said diffuser in communication with said core airflow passage to diffuse said airflow from said core airflow passage; a hybrid seal assembly between a rotationally fixed support structure and said diffuser section, said hybrid seal assembly including a seal which defines a seal edge surface ring about said engine centerline biased toward said diffuser section along said engine centerline by a bias member, said seal supported within a seal housing supported within a housing mounted within rotationally fixed support structure; and a sliding plate mounted to said seal housing, said sliding plate interfaces with said seal housing, said sliding plate manufactured of a carbon material to provide a sliding interface between said seal housing and said housing.