After studying engineering in Kiev, Sikorsky devoted himself to developing the helicopter. In 1910, after failing to build a workable model, he turned to fixed-wing airplane design, and, several years later, he built and flew the first multi-motored plane, a four-engine aircraft with an innovative enclosed cabin. Sikorsky immigrated to the US in 1919 and had continued success designing airplanes. How long would it be before he finally realized his dream of building his first working helicopter? Discuss
Source: The Free Dictionary