Sikorsky X2 Sikorsky X2 The Sikorsky X2 is an experimental high-speed compound helicopter with coaxial rotors developed by Sikorsky Aircraft. Sikorsky developed the X2 helicopter on a $50 million budget. The design includes expertise gathered from several earlier design projects. The S-69/XH-59A Advancing Blade Concept Demonstrator had shown that high speed was possible with a coaxial helicopter with auxiliary propulsion (two jet engines), but that vibration and fuel consumption was excessive; the Cypher UAV expanded the company's knowledge of the unique aspects of coaxial flight control laws with a fly-by-wire aircraft; and the RAH-66 Comanche developed expertise in composite rotors and advanced
Igor I. Sikorsky Memorial Bridge also includes a system of concrete fenders that protects the bridge piers from ship collisions, a feature that was absent from the 1940 span. In 2006, the new bridge was formally dedicated as the Igor I. Sikorsky Memorial Bridge. Igor I. Sikorsky Memorial Bridge The Igor I. Sikorsky Memorial Bridge (also known as the Sikorsky Memorial Bridge, and the Housatonic River Bridge) carries the limited-access Connecticut Route 15 over the Housatonic River, between Stratford and Milford, Connecticut. The first bridge, known as the Sikorsky Bridge (not to be confused with the new Igor I. Sikorsky Memorial Bridge's name), on the