Patent ID: 8402744
Filing Date: 2013-03-26
Classification: F01D,F02K,F05D

Abstract:
1. A valve system intermediate a secondary flow path and a primary flow path of a gas turbine engine comprising: a valve seat defining a flow passage there through between a secondary flow path and a primary flow path; and a plurality of poppet valves movable relative said valve seat between an open position and a closed position with regard to said flow passage, said flow passage including a structure that directs flow through said flow passage; wherein said plurality of poppet valves, and said valve seat define a corresponding plurality of flow passages between the secondary flow path and the primary flow path; and an actuator system that is operable to selectively move said plurality of poppet valves; and a controller in communication with said actuator system and operable to command said actuator system to move said plurality of poppet valves wherein said controller is operable to command said actuator system to move said plurality of poppet valves sequentially.