Rotor and control design are two of the most challenging tasks during the development of an autonomous micro helicopter. Both areas are strongly affected by the extremely small size of the vehicle.The rotors are working in the low Reynolds numbers reducing efficiency and limiting the autonomy time of the helicopter. On the control side the small size leads to faster system dynamics and limits the payload for accurate sensors and actuators. These challenges and how to address them are the main topics of this book.In order to increase rotor efficiency, the influence of various blade parameters,...