In Stanford, Conn.
Igor Sikorsky created the first successful helicopter
The first Helicopter was made by Igor Sikorsky, in 1939.
Igor Sikorsky invented the first practical helicopter.
Igor Sikorski built the first practical helicopter
Igor sikorsky
Igor Sikorsky did.
Igor Sikorsky!:))))
igor sikorsky the s 300
Igor Sikorsky created the first successful helicopter
In 1939 Sikorsky's designs culminated in the building of the first successful helicopter, theSikorsky VS-300.These designs led directly to the R4, the first mass produced helicopter in 1942.
The first Helicopter was made by Igor Sikorsky, in 1939.
Igor Sikorsky invented the first practical helicopter
Sikorsky
Igor Sikorsky made the first practical helicopter
Sikorsky's V-300 was the first practical helicopter.
Igor Sikorsky made the first practical helicopter
Igor Sikorsky invented the first practical helicopter.