Patent ID: 8444383

Claim:
A wind turbine blade system comprises: at least two hollow blades, each blade having a tip and a root, each blade being adapted for rotating about an axis near the root of the blade, each blade further comprising: an air intake at the tip of the blade and an air outlet that is located near the root of the blade, and an airflow path that extends within the blade from the air intake to the air outlet; a ram air turbine positioned inside each of the blades, along the airflow path, the ram air turbine being adapted for generating electricity, and thus the current output may then be connected to an electric load, so that air is ingested at the tip of the blade as each blade rotates, and so that the air ingested is used to drive each respective ram air turbine, and so that electricity generated by each ram air turbine may be used to control the speed of the blades.