helicopter Autogiro Kellett 3D model

The Kellett KD-1, a pioneering 3D model helicopter, represents an innovative piece of aviation history from the World War I era, specifically focusing on the autogiro design. Unlike traditional fixed-wing aircraft, the KD-1 utilized an unpowered rotor for lift, coupled with a conventional propeller for thrust, marking a significant leap in rotary-wing technology. This model served as a predecessor to modern helicopters, showcasing early attempts to achieve vertical takeoff and landing capabilities. Its detailed 3D model captures the intricate mechanics and design philosophy of the time, offering a unique glimpse into the experimental aviation advancements of the early 20th century.