Patent ID: 6217277
Filing Date: 2001-04-17
Classification: F01D,F04D,F05D

Abstract:
A rotary engine comprising:a generally cylindrical casing;a fan blade, rotatably mounted within said casing for rotation about a lengthwise extending central axis of said engine;an annular lining mounted within said casing between a tip of said fan blade and said casing, sealing said tip of said fan blade within said casing, said lining comprising:a brush seal, extending around an inner circumference of said casing, comprising a plurality of bristles extending radially inward from said brush seal;a retaining membrane extending around said brush seal, preventing said bristles from extending substantially in a radial direction from said brush seal;whereby said retaining membrane is adapted to release said bristles to extend radially inward and occupy a region between said tip of said fan blade and said casing to at least partially seal said tip of said fan blade within said casing upon a radial excursion of said fan blade.