It was the V300.
Igor never flew a helicopter, but he did build one though.
Igor sikorsky
Igor Sikorsky in 1942
The first successful helicopter flight is credited to Paul Cornu, a French engineer, who flew his design in 1907. However, it was Igor Sikorsky, a Russian-American aviation pioneer, who significantly advanced helicopter technology and is often recognized for creating the first practical helicopter, the Vought-Sikorsky VS-300, which flew in 1939. Sikorsky's innovations laid the groundwork for modern helicopter design.
Igor Sikorski built the first practical helicopter
Igor Sikorsky invented the helicopter.
That is Igor Sikorski, and he was in his 40 's when he invented the first practical helicopter.
Igor Sikorski perfected helicopter hovering
An engineer, Igor Sikorski, invented the helicopter.
Igor Sikorski invented helicopter in the year 1906.
Igor Sikorsky invented the first practical helicopter
the helicopter made him horny