The technology needed for the design and installation of propellers is presented and summarized in three volumes. Volume 3 (Hub, Actuator, and Control Design) contains material on the design of the hub and actuator systems. The theories of propeller controls are presented with the details of the types used with conventional and V/STOL airplanes. A brief discussion of past and future propeller installations is given along with recommendations for future work. Design criteria, airfoil data, and a computer program are given.