Sikorsky Aircraft S-47 / R-4 / Hoverfly 1
Observation / Liaison / Rescue Helicopter
The Sikorsky S-47 is a light 2-seat single-engine military helicopter built by the American manufacturer Sikorsky Aircraft.. The S-47 was operated by the United States Army Air Forces as the Sikorsky R-4, by the US Navy and US Coast Guard as the HNS-1. S-47 in service with the Royal Air Force and Royal Navy were designated Hoverfly.
The Sikorsky S-47 was the world?s first mass production helicopter. It is a development of the experimental helicopter Vought-Sikorsky VS-300.
Crew | 2 |
Propulsion | 1 Radial Engine | |
Engine Model | Warner R-550 Super Scarab | |
Engine Power | 149 kW | 200 hp |
max. Cruise Speed | 104 km/h | 56 kts 64 mph |
Speed | 131 km/h | 71 kts 82 mph |
Service Ceiling | 2.438 m | 8.000 ft |
Range | 370 km | 200 NM 230 mi. |
Empty Weight | 916 kg | 2.019 lbs |
max. Takeoff Weight | 1.150 kg | 2.535 lbs |
Rotor Blades (main/tail) | 3/3 | |
Main Rotor Diameter | 11,50 m | 37 ft 9 in |
Tail Rotor Diameter | 2,40 m | 7 ft 10 in |
Rotor Disc Area | 103,9 m² | 1118 ft² |
Length (Fuselage) | 10,20 m | 33 ft 6 in |
Length | 14,80 m | 48 ft 7 in |
Height | 3,78 m | 12 ft 5 in |
First Flight | 14.01.1942 | |
Production Status | out of production | |
Production Range | 1942-1944 | |
Total Production | 131 |
Data for (Version) | Sikorsky R-4B |
[Photo-ID: 5487] © Karsten Palt 2012-01-11 | |
Sikorsky R-4B Hoverfly United States Army Air Forces (USAAF) Reg.: 43-46506 c/n: 43 | |
National Museum of the United States Air Force [Dayton, Ohio / USA (Wright-Patterson AFB)] |
[Photo-ID: 1250] © Karsten Palt 2008-07-16 | |
Sikorsky S-47 / R-4B Hoverfly Mk.1 Royal Air Force Reg.: KK995 Composite Aircraft | |
Royal Air Force Museum [London-Hendon] |
[Photo-ID: 10357] © Karsten Palt 2014-05-28 | |
Sikorsky XR-4C United States Army Air Forces (USAAF) Reg.: 41-18874 c/n: 1 prototype, first Sikorsky R-4 built | |
NASM Udvar Hazy Center [Chantilly, VA] |