1953


Sikorsky S-56 H-37







Sikorsky S-56 H-37

Twin piston engined, 5 bladed rotor, heavy-lift helicopter for USMC & US Army.
The S-56 first flew on 18 Dec 1953.


Specifications S-56 H-37


Engine 2 x PW R-2800 Double Wasp 2000 shp
Capacity 3 + 36
Length (m) 19.59
Height (m) 6.71
Blades 5
Rotor diam. (m) 21.95
Disc area (m2) 379
Weight (kgs) Empty: 9470     Max: 14100
Speed (km/h) Cruise: 184     Max: 261
Range (km) 233
Ceiling (m)     Max: 2650
Rate/Climb (m/min) 277.4


  Derivatives & Versions of S-56 H-37


ModelYearHistory
XHR2S-1

1953
1953
H-37A Mojave

1955
1955 Military transport variant for US Army. Redesignated CH-37A/B in 1962
HR2S-1

1955
1955 Production model for USMC. Redesignated CH-37C in 1962
HR2S-1W

1956
1956 Airborne early warning (AEW) helicopter for the US Navy fitted with AN/APS-20E radar. Two built.

  List of Operators of S-56 H-37


Years Model Org
1956/70 usa US Army Aviation
1956/70 usa US Marine Corps
1978/?? H-37A Mojave usa Aircrane Inc



  Global Distribution of S-56 H-37



94h-37a
55hr2s-1
2hr2s-1w
5xhr2s-1





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