Abstract: A rotor blade for a wind turbine is disclosed. The rotor blade may generally include a shell having a pressure side and a section side. The shell may define an outer surface along the pressure and suction sides over which an airflow travels. Additionally, the rotor blade may include a spoiler assembly having a deformable membrane disposed adjacent to the outer surface. The deformable membrane may be configured to be deformed relative to the outer surface such that at least a portion of the deformable membrane is movable between an un-actuated position to an actuated position. Additionally, the at least a portion of the deformable membrane may be configured to separate the airflow from the outer surface when in the actuated position.