From the standpoint of vehicle propulsion physics, an unmanned underwater vehicle (UUV) is little different from your personal ski boat or a tanker. It shares the Vessel-Propulsor-Drive system model, ...
Hartzell's Trailblazer 83-inch composite propeller now has an STC for Piper PA-12 and PA-18 Super Cub models. The propeller offers up to a 30% increase in takeoff thrust and nearly 20% higher cruise ...