Tomorrow’s Tech Treepowered by Astra

Aerospace · Recorded milestone

Practical helicopter

Recorded year1939

Igor Sikorsky's VS-300 establishes the single-main-rotor helicopter layout.

Explore this milestone on the interactive map

Built on

Powered flightRecorded · 1903enables

Led to

Heavy cargo dronesRecorded · 2011enables
Helicopter flies on MarsRecorded · 2021enables

Sources & evidence

Additional source

Dataset updated 2026-10-18. This individual record has not been separately re-reviewed.