Sikorsky R-4
E888180
The Sikorsky R-4 was the world’s first mass-produced helicopter and the first helicopter to be used operationally by the U.S. military during World War II.
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
helicopter
ⓘ
military helicopter ⓘ |
| capacity | 1 passenger ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 2 ⓘ |
| cruiseSpeed | 97 km/h ⓘ |
| designer | Igor Sikorsky NERFINISHED ⓘ |
| developedFrom | Sikorsky VS-300 NERFINISHED ⓘ |
| emptyWeight | 1134 kg ⓘ |
| engineModel | Warner R-550-1 Super Scarab NERFINISHED ⓘ |
| enginePower | 200 hp ⓘ |
| engineType | piston engine ⓘ |
| era | 1940s ⓘ |
| firstFlight | 1942-01-13 ⓘ |
| firstOperationalUse | 1944 ⓘ |
| fuselageCovering | fabric-covered ⓘ |
| fuselageMaterial | steel tube structure ⓘ |
| grossWeight | 1452 kg ⓘ |
| height | 3.0 m ⓘ |
| introduced | 1942 ⓘ |
| landingGearType | fixed landing gear ⓘ |
| length | 10.4 m ⓘ |
| mainRotorConfiguration | single main rotor ⓘ |
| mainRotorDiameter | 11.6 m ⓘ |
| manufacturer | Sikorsky Aircraft NERFINISHED ⓘ |
| maximumSpeed | 120 km/h ⓘ |
| militaryDesignation | R-4 NERFINISHED ⓘ |
| navalDesignation | HNS-1 NERFINISHED ⓘ |
| notableFor |
first helicopter used operationally by the U.S. military
ⓘ
first mass-produced helicopter ⓘ |
| numberBuilt | 131 ⓘ |
| primaryUser |
Royal Air Force
ⓘ
Royal Navy NERFINISHED ⓘ United States Army Air Forces NERFINISHED ⓘ United States Navy NERFINISHED ⓘ |
| RAFDesignation | Hoverfly I NERFINISHED ⓘ |
| range | 210 km ⓘ |
| role |
liaison helicopter
ⓘ
rescue helicopter ⓘ training helicopter ⓘ |
| rotorBladesNumber | 3 ⓘ |
| serviceCeiling | 2400 m ⓘ |
| status | retired ⓘ |
| tailRotor | yes ⓘ |
| usedFor |
observation
ⓘ
pilot training ⓘ search and rescue missions ⓘ |
| usedInConflict | World War II ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.