Patent ID: 8967952
Filing Date: 2015-03-03
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 flow apertures extending axially through the duct blocker rotor, and a plurality of roller elements connected to an inner rotor platform, wherein the first flow apertures are arranged circumferentially around the inner rotor platform; and a duct blocker stator comprising a plurality of second flow apertures extending axially through the duct blocker stator, and a roller element track located radially within the inner rotor platform and in rolling contact with the roller elements, wherein the second flow apertures are arranged circumferentially around an inner stator platform that is located axially adjacent to the inner rotor platform; wherein the duct blocker rotor rotates relative to the duct blocker stator to regulate fluid flowing between the first flow apertures and the second flow apertures.