Safety system for an aerodynamic device of a wind turbine rotor blade

A rotor blade of a wind turbine comprising:

• an aerodynamic device which can be actuated pneumatically by a use of a pressure supply system, wherein the pressure supply system comprises:
• a pressurized air supply system;
• a pressurized air transmission system with pressure lines for transmitting the supplied pressurized air from the pressurized air supply system to the aerodynamic device;
• at least one pneumatic actuator for activating the aerodynamic device;
• and
• a safety system to protect the rotor blade from damages caused by overpressure in the pressurized air transmission system and/or the actuator, wherein the safety system is configured to selectively discharge pressurized air from the pressurized air transmission system and/or the actuator;
• wherein air is continuously purged out of the at least one pneumatic actuator and towards an atmosphere to allow a constant flow of pressurized air through the at least one pneumatic actuator.