|
gptkbp:instanceOf
|
gptkb:helicopter
|
|
gptkbp:armament
|
none
|
|
gptkbp:cockpit
|
open cockpit
|
|
gptkbp:constructionMaterial
|
metal
|
|
gptkbp:crew
|
1
|
|
gptkbp:design
|
single rotor, tail rotor
|
|
gptkbp:electrification
|
1 × Lycoming O-435 engine
|
|
gptkbp:engine
|
Lycoming O-435
|
|
gptkbp:firstAwarded
|
true
|
|
gptkbp:firstFlight
|
1942
|
|
gptkbp:headlights
|
two-blade
|
|
gptkbp:height
|
11 ft 6 in
|
|
gptkbp:historicalSignificance
|
pioneered helicopter design and use.
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Sikorsky R-4
|
|
gptkbp:influencedBy
|
gptkb:Sikorsky_VS-300
gptkb:Sikorsky_R-6
gptkb:Sikorsky_R-5
gptkb:Sikorsky_R-3
|
|
gptkbp:introduced
|
1944
|
|
gptkbp:landingGear
|
skids
|
|
gptkbp:length
|
36 ft 6 in
|
|
gptkbp:manufacturer
|
gptkb:Sikorsky_Aircraft_Corporation
|
|
gptkbp:maxSpeed
|
100 mph
|
|
gptkbp:maxTakeoffWeight
|
3,200 lb
|
|
gptkbp:nickname
|
gptkb:Hoverfly
|
|
gptkbp:notableFeature
|
two-blade
first mass-produced helicopter in the U.S.
|
|
gptkbp:operationalRange
|
300 miles
|
|
gptkbp:passengerCapacity
|
3
|
|
gptkbp:primaryUser
|
gptkb:United_States_Army_Air_Forces
|
|
gptkbp:productionYears
|
1942-1949
|
|
gptkbp:range
|
300 miles
|
|
gptkbp:retired
|
1950s
|
|
gptkbp:role
|
utility helicopter
first helicopter to enter service with the U.S. military.
|
|
gptkbp:rotorDiameter
|
37 ft 4 in
|
|
gptkbp:services
|
10,000 ft
|
|
gptkbp:setting
|
single main rotor and tail rotor.
|
|
gptkbp:successor
|
gptkb:Sikorsky_H-19_Chickasaw
|
|
gptkbp:totalGoals
|
131
|
|
gptkbp:usedBy
|
gptkb:Royal_Air_Force
gptkb:Royal_Canadian_Air_Force
gptkb:U.S._Army
gptkb:U.S._Coast_Guard
gptkb:U.S._Navy
|
|
gptkbp:usedIn
|
gptkb:Korean_War
|
|
gptkbp:variant
|
R-4D
R-4E
R-4B
|
|
gptkbp:weight
|
2,200 lb
|