Sikorsky R-4 - Wikipedia
WEBThe Sikorsky R-4 is a two-seat helicopter that was designed by Igor Sikorsky with a single, three-bladed main rotor and powered by a radial engine.
Sikorsky R-4B Hoverfly - National Museum of the USAF
WEBSikorsky R-4B Hoverfly. Developed by Igor Sikorsky from his famous VS-300 experimental helicopter, the R-4 became the world's first production helicopter, and the U.S. Army Air Force's first service helicopter.
Sikorsky R-4 helicopter - development history, photos, technical …
WEBThe Sikorsky R-4, or VS-316A, was a definitive development of Igor Sikorsky's successful pre-war VS-300, and in 1944 became the first helicopter in the world to be placed in series production.
Sikorsky Aircraft - Wikipedia
WEBAfter first flying the VS-300 he developed the Sikorsky R-4, the first stable, single-rotor, fully controllable helicopter to enter full-scale production in 1942, upon which most subsequent helicopters were based.
Sikorsky R-4B - Air and Ground
WEBThe Sikorsky R-4 was the first mass-produced helicopter. In all, 131 units were built. It was produced between 1942 and 1944 and was used by the United States Army Air Force, the United States Coast Guard, and the United Kingdom’s Royal Air Force.
The First Military Use of the R-4 - Sikorsky Archives
WEBJohn H. Donavan recollects the first military use of a helicopter, which took place in Guam during World War II, in early 1945. At the time, Donavan was working in the Public Relations office at Harmon Field in Guam. echelon service and supply base.
A Brief History of the Sikorsky R-4: The First Mass-Produced …
WEBOct 26, 2018 · The Sikorsky R-4 has been considered the world’s first mass-produced helicopter. Many different countries used the Sikorsky R-4. The United States, in particular, was found of the helicopter, using it in the United States Army Air Forces, the United States Navy, and the United States Coast Guard.
Sikorsky S-47 / VS-316A – Igor I Sikorsky Historical Archives
WEBThe Sikorsky S-47/VS-316A/R-4 model was the first production helicopter in the world and based on the successful VS-300A helicopter. It was designed with Sikorsky funds without Government assistance. On May 26, 1940 Igor Sikorsky visited the U.S. Army Air Corps, Material Division at Wright Field in Dayton, Ohio.
HNS-1/R-4 SIKORSKY S-47 HOVERFLY HELICOPTER
WEBThe Sikorsky R-4 was a two-seat helicopter 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 helicopter used by the United States Army Air Forces, [1] the United States Navy, the United States Coast Guard and the ...
Sikorsky R-4 - Simple English Wikipedia, the free encyclopedia
WEBThe Sikorsky R-4 is the first military helicopter built in USA. It flown during World War II and beginning of Korea War. Some were used by US Navy, US Coast Guard and Fleet Air Arm