🛠️ Invention or technique

Practical helicopter

Helicóptero práctico

Date
1936–1939 · confidence medium
Place
Stratford, Connecticut, United States
Credited to
Igor Sikorsky (VS-300, 1939); Heinrich Focke (Fw 61, Bremen, 1936); Juan de la Cierva (autogyro, Madrid, 1923); Paul Cornu (1907)
People
👤 Henrich Focke1890–1979👤 Ígor Sikorski1889–1972👤 Juan de la Cierva1895–1936👤 Paul Cornu1881–1944
Field
Movement

⚠️ Disputed: the sources disagree.

What it is

Aircraft with a main rotor and an anti-torque tail rotor (Sikorsky configuration), capable of controlled hovering flight. The VS-300 configuration became the worldwide standard.

Focke's Fw 61 (1936) was the first fully controllable helicopter; the VS-300 (1939) fixed the single-main-rotor-with-tail-rotor configuration. La Cierva contributed the articulated rotor.

What it led to

  • Medical evacuation and aerial rescue
  • Korean and Vietnam wars (air mobility)
  • Transport to oil platforms and cities
🕸️ View in the graph

Built on

Made possible

  • Turbine helicopter

Links

Sources✓ verified 2026-09-25