Sikorsky R-4
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The Sikorsky R-4 is a two-seat light helicopter that was designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine. The R-4 was the world's first large-scale mass
A Sikorsky R-4 in a hover
In this image taken in 1944, one of Langley Research Center's Sikorsky YR-4B/HNS-1 helicopters is seen in the 30 × 60 full-scale wind tunnel.
Comdr. Frank A. Erickson, USCG & Dr. Igor Sikorsky, Sikorsky Helicopter HNS-1 C.G. 39040
HNS-1 helicopter lands on the icebreaker USCGC Northwind for Operation High Jump (Task Force 68), a mission to Antarctica
Igor Sikorsky
Videos
Igor Ivanovich Sikorsky was a Russian-American aviation pioneer in both helicopters and fixed-wing aircraft. His first success came with the Sikorsky S-2, the second aircraft of his design and constru
Sikorsky R-4
…The Sikorsky R-4 is a two-seat light helicopter that was designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine. The R-4 was the world's first large-scale mass-produced helicopter and the first…
Studio portrait, c. 1950
Sikorsky in 1914
Sikorsky Bolshoi Baltisky of 1913, before receiving its pair of pusher engines
Russian aviators Sikorsky, Genner and Kaulbars aboard a "Russky Vityaz", c. 1913