Credit
Sardaka · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified
FORCETALLY
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At a glance
Measured figures
Bell 412EP · including rotors
Single source56 ft 1 in (17.09 m) including rotors[source]
H-34 Choctaw · fuselage
Configuration
| Specification | Bell 412 | Sikorsky H-34 |
|---|---|---|
| Type | Multipurpose utility helicopter[source] | Helicopter[source] |
| National origin | United States / Canada[source] | United States[source] |
| Manufacturer | Bell Helicopter[source] | Sikorsky Aircraft[source] |
| Primary users | Japan Ground Self Defence Force See Operators for others[source] | United States Army United States Navy United States Marine Corps |
47 ft 2 in (14.38 m) fuselage[source]
Bell 412EP · 1 × Pratt & Whitney Canada PT6T-3D Twin-Pac or PT6T-3DF Twin-Pac coupled turboshaft engine - each, 1,250 shp (
Single source1 × Pratt & Whitney Canada PT6T-3D Twin-Pac or PT6T-3DF Twin-Pac coupled turboshaft engine - each, 1,250 shp (930 kW)[source]
H-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]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Number built | 1,300+[source] | 2,340[source] |
|---|
| Manufactured | 1979–present[source] | 1954–1970 (Foreign production of derivatives and sub-types continued under license after the Sikorsky production ended.)[source] |
|---|
| Introduction date | 1981 ( 1981 )[source] | 1954[source] |
|---|
| First flight | August 1979 ( 1979-08 )[source] | 8 March 1954[source] |
|---|
| Developed from | Bell 212[source] | Sikorsky H-19 Chickasaw[source] |
|---|
| Variant | Bell CH-146 Griffon[source] | Westland Wessex[source] |
|---|
| Capacity | up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg)[source] | 12 troops (H-34A) / 18 troops (H-34C) / 8 stretchers[source] |
|---|
| Fuselage length | 43 ft (13 m)[source] | — |
|---|
| Blade sections | root: Boeing VR-7; tip: Wortmann FX 71-H-080[source] | — |
|---|
| Main rotor area | 1,662 sq ft (154.4 m 2 )[source] | 2,463 sq ft (228.8 m 2 ) * Blade section: – NACA 0012[source] |
|---|
| Power/mass | 0.2663 hp/lb (0.4378 kW/kg)[source] | — |
|---|
| Status | — | In service[source] |
|---|
| Fuel capacity | — | 198–307 US gal (165–256 imp gal; 750–1,160 L)[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] |
|---|
Maximum take-off; H-34 Choctaw · Max takeoff weight
Single source