Method and apparatus for controlling compressor bleed airflow of a gas turbine engine using a butterfly valve assembly

摘要

A method and apparatus for controlling fluid flow is provided. The valve assembly includes a valve body including a longitudinal axis and a radially inner internal flow passage extending axially between an inlet opening and an outlet opening, a disk selectively positionable to modulate a flow of working fluid through the flow passage, and a radially outer external surface. The valve assembly further includes a first actuator positioned radially outboard of the external surface, a second actuator positioned radially outboard of the external surface, and a first linkage including a first actuator end configured to couple to the first actuator, a second actuator end configured to couple to the second actuator, and a rod end configured to couple to the disk, wherein an actuating force applied from each actuator to each respective actuator end is combined through the first linkage to the rod end.