Eufaula, Alabama. Eufaula is the largest city in Barbour County, Alabama, United States.
Leonardo da Vinci (1452â1519) is generally credited with inventing the helicopter, but the first practical design was developed only in the 1930s by Russian-born Igor Sikorsky (1889â1972). Today, typical uses for helicopters include military transportation and air-sea rescue.eonardo da Vinci (1452â1519) is generally credited with inventing the helicopter, but the first practical design was developed only in the 1930s by Russian-born Igor Sikorsky (1889â1972). Today, typical uses for helicopters include military transportation and air-sea rescue.
Quick Answer. The VS-300, the world's first functioning helicopter, was invented by Igor Sikorsky. The patent was granted to Sikorsky on March 19, 1935, following his initial application on June 27, 1931. Keep Learning.