Patent ID: 9011082
Filing Date: 2015-04-21
Classification: F01D,F02C,F02K,F05D,Y02T

Abstract:
1. A rotational duct blocker for a gas turbine engine, comprising: a duct blocker rotor comprising a plurality of first vane segments that extend radially between an inner rotor platform and an outer rotor platform, and a plurality of first flow apertures that extend axially through the duct blocker rotor, wherein each first flow aperture extends circumferentially between respective adjacent first vane segments; a duct blocker stator comprising a plurality of second vane segments that extend radially between an inner stator platform and an outer stator platform, and a plurality of second flow apertures that extend axially through the duct blocker stator, wherein each second flow aperture extends circumferentially between respective adjacent second vane segments; and a track radially next to the duct blocker rotor; wherein the duct blocker rotor is adapted to move circumferentially along the track such that the first vane segments move circumferentially relative to the second vane segments to regulate fluid flowing between the first flow apertures and the second flow apertures.