Credit
U.S. Army · Public domain · Resized · Public domain · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
H-34 Choctaw · fuselage
Single source47 ft 2 in (14.38 m) fuselage[source]
S-92 · Length
Single sourceConfiguration
| Specification | Sikorsky H-34 | Sikorsky S-92 |
|---|---|---|
| Type | Helicopter[source] | Medium-lift transport/utility helicopter[source] |
| National origin | United States[source] | United States[source] |
| Manufacturer | Sikorsky Aircraft[source] | Sikorsky Aircraft[source] |
| Status | In service[source] | In service[source] |
68 ft 6 in (20.88 m)[source]
S-92 · fuselage
Single source17 ft 3 in (5.26 m) fuselage[source]
Empty; H-34 Choctaw · Empty weight
Single sourceGross; H-34 Choctaw · Gross weight
Single sourceMaximum take-off; H-34 Choctaw · Max takeoff weight
Single source7,646 lb (3,468 kg)[source]
11,867 lb (5,383 kg)[source]
13,300 lb (6,033 kg)[source]
Empty; S-92 · Empty weight
Single sourceGross; S-92 · Gross weight
Single sourceH-34 Choctaw · 1 × Wright R-1820-84 Cyclone for take-off
Single source1 × Wright R-1820-84 Cyclone , 1,525 hp (1,137 kW) for take-off[source]
S-92 · 2 × General Electric CT7-8A turboshaft engines, 2,520 shp ( ) each
Single source2 × General Electric CT7-8A turboshaft engines, 2,520 shp (1,880 kW) each[source]
H-34 Choctaw · 1,500 ft/min ( ) at sea level
Single source1,500 ft/min (7.6 m/s) at sea level[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Primary users | United States Army United States Navy United States Marine Corps[source] | CHC Helicopter Petroleum Helicopters International Bristow Helicopters Cougar Helicopters[source] |
|---|
| Number built | 2,340[source] | at least 300[source] |
|---|
| Manufactured | 1954–1970 (Foreign production of derivatives and sub-types continued under license after the Sikorsky production ended.)[source] | 1998–present[source] |
|---|
| Introduction date | 1954[source] | 2004[source] |
|---|
| First flight | 8 March 1954[source] | December 23, 1998[source] |
|---|
| Developed from | Sikorsky H-19 Chickasaw[source] | Sikorsky S-70[source] |
|---|
| Variant | Westland Wessex[source] | — |
|---|
| Capacity | 12 troops (H-34A) / 18 troops (H-34C) / 8 stretchers[source] | 19 passengers[source] |
|---|
| Fuel capacity | 198–307 US gal (165–256 imp gal; 750–1,160 L)[source] | — |
|---|
| Main rotor area | 2,463 sq ft (228.8 m 2 ) * Blade section: – NACA 0012[source] | 2,492.3 sq ft (231.54 m 2 )[source] |
|---|
| Hover ceiling IGE | 9,600 ft (2,926 m) ( H-34A )[source] | — |
|---|
| Hover ceiling OGE | 5,500 ft (1,676 m) ( H-34A )[source] | — |
|---|
| Vertical rate of climb | 600 ft/min (3.05 m/s) at sea level[source] | — |
|---|
| Variants | — | Sikorsky CH-148 Cyclone Sikorsky VH-92[source] |
|---|
| Cabin dimensions | — | 20 ft (6 m) long by 6.6 ft (2 m) tall[source] |
|---|
| Blade section | — | - root: Sikorsky SC2110; tip: Sikorsky SSC-A09[source] |
|---|
| Disk loading | — | 9.8 lb/sq ft (48 kg/m 2 )[source] |
|---|
| Power/mass | — | 0.23 hp/lb (0.38 kW/kg)[source] |
|---|
Maximum take-off; S-92 · Max takeoff weight
Single source