SIKORSKY H-37 MOJAVE

H-37 SERVICE

Manufacturer: Sikorsky Aircraft Division, United Aircraft Corp., Bridgeport, Connecticut, USA
Model: S-56
Designations: H-37; HR2S
Name: Mojave (US Army)
First official flight: (XHR2S-1) 18/12/1953
Factory production period: 1953 - 1960
Primary service period: 1956 - 1960's
Last official flight: (CH-37B) ?

H-37 VARIANTS AND PRODUCTION

XHR2S-1
1953, prototype, twin-engined, 5-bladed
rotor, heavy-lift helicopter for USMC.
Produced 1953 - 1955

Sikorsky Bridgeport, Connecticut (S)

1 static test airframe 56-1X  
BuNo.133732 / 133735 56-2X / 56-5X

Total: 005

HR2S-1
1955, as XHR2S-1, fuselage refinements.
Redesignated as CH-37C in 1962.
Produced 1955 - 1959

Sikorsky Bridgeport, Connecticut (S)

BuNo.138418 / 138424 mixed 56-001 to 56-008  
BuNo.140314 / 140325 mixed 56-009 to 56-029  
BuNo.141603 / 141617 mixed 56-031 to 56-075  
BuNo.145855 / 145875 mixed 56-076 to 56-123 Total: 055
71 additional airframes cancelled.

HR2S-1W
1957, as HR2S-1, AEW version, nose radome.
Produced 1957
Sikorsky Bridgeport, Connecticut (S)

BuNo.141646, 141647 56-015, 56-021

Total: 002

H-37A Mojave
1955, as YH-37, engine / fin upgrade for US Army.
4 redesignated as CH-37A in 1962.
Produced 1955 - 1960

Sikorsky Bridgeport, Connecticut (SI)

54-993 / 54-1001 mixed 56-006 to 56-030  
55-610 / 55-650 mixed 56-033 to 56-090  
57-1642 / 57-1661 mixed 56-094 to 56-127  
58-0983 / 58-1006 mixed 56-128 to 56-151 Total: 094
9 additional airframes cancelled.

 

Grand Total: 156

H-37 CONVERSIONS

US Army

YH-37 1 HR2S-1, 1954, prototype conversion for evaluation / tests.
H-37B 90 H-37A, 1961, redesigned cargo doors, upgraded systems.
(CH-37B) 90 1962, redesignation of H-37B.

- Two prototypes were built by Westland Helicopters Ltd., England using Model S-56
  components and turboshaft engines as the Westland Westminster in 1958.
  Further development was abandoned. G-APLE (c/n: WA.1), G-APTX (c/n: WA.2).
- One prototype built using Model S-56 components as the Sikorsky S-60 Skycrane
  in 1959 with civil reg.: N807. Later developed into the Sikorsky Model S-64.

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