Bleed valve for a gas turbine engine and a corresponding gas turbine

A gas turbine engine 10 includes a compressor section 12, a combustion section 14 communicating with and disposed downstream of the compressor section 12 relative to a direction of airflow, and a gas turbine section 16 communicating with and disposed downstream of the combustion section 14 relative to a direction of airflow. One of the sections 12,14,16 has a wall 110 defining an opening to access an airflow through the sections. A bleed diffuser assembly 100 is disposed over the opening, and includes a housing 102 including inlet 104 and outlet 106 ends. A diffuser 112 having inlet 118 and outlet 122 ends is movably disposed within the housing 102. An actuator 124 is coupled to the diffuser 112 for moving the diffuser generally toward the inlet end 104 of the housing and into an operative position when the actuator 124 is energized. A biasing member 116 is provided for urging the diffuser 112 generally toward the outlet end 106 of the housing and into a retracted position when the actuator 124 is de-energized.