The Vought-Sikorsky VS-300 was an experimental helicopter developed in the late 1940s. Designed by Igor Sikorsky, it was notable for its innovative use of a single main rotor and a tail rotor, which helped improve stability and control. The VS-300 made its first successful flight in 1940, marking a significant milestone in helicopter technology. This aircraft played a crucial role in the development of modern helicopters, influencing future designs and concepts. The VS-300's unique configuration laid the groundwork for many subsequent models, showcasing the potential of rotary-wing flight and contributing to the evolution of aviation.