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]
SH-2F Seasprite · nose and blades folded
Configuration
| Specification | Bell 412 | Kaman SH-2 Seasprite |
|---|---|---|
| Type | Multipurpose utility helicopter[source] | Anti-submarine warfare helicopter[source] |
| National origin | United States / Canada[source] | — |
| Manufacturer | Bell Helicopter[source] | Kaman Aircraft Corporation[source] |
| Primary users | Japan Ground Self Defence Force See Operators for others[source] | United States Navy (historical) Royal New Zealand Air Force Polish Navy Egyptian Navy[source] |
38 ft 4 in (11.68 m) nose and blades folded[source]
Empty; Bell 412EP · Empty weight
Single sourceMaximum take-off; Bell 412EP · Max takeoff weight
Single source6,789 lb (3,079 kg)[source]
11,900 lb (5,398 kg)[source]
Empty; SH-2F Seasprite · Empty weight
Single sourceMaximum take-off; SH-2F Seasprite · normal max
Single sourceBell 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]
SH-2F Seasprite · 2 × General Electric T58-GE-8F turboshaft engines, 1,350 shp ( ) each
Single source2 × General Electric T58-GE-8F turboshaft engines, 1,350 shp (1,010 kW) each[source]
SH-2F Seasprite · with 2 external tanks
Single source5 hours with 2 external tanks[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] | 184[source] |
|---|
| Manufactured | 1979–present[source] | 1959–1969 1971–1990s: F/G model and conversions[source] |
|---|
| Introduction date | 1981 ( 1981 )[source] | December 1962[source] |
|---|
| First flight | August 1979 ( 1979-08 )[source] | 2 July 1959 (HU2K-1)[source] |
|---|
| Developed from | Bell 212[source] | — |
|---|
| Variant | Bell CH-146 Griffon[source] | Kaman SH-2G Super Seasprite[source] |
|---|
| Capacity | up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg)[source] | 1 pax with litter patient (with LAMPS installed) / 4 pax and two litter patients (with Sonobuoy launcher removed)[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] | 1,520.53 sq ft (141.262 m 2 ) 4-bladed main and tail rotors[source] |
|---|
| Power/mass | 0.2663 hp/lb (0.4378 kW/kg)[source] | — |
|---|
| Status | — | Partially retired; G model in service[source] |
|---|
| Retired | — | 1993: F ( United States Navy ) 2001: G (USN) 2008: Royal Australian Navy[source] |
|---|
| Fuel capacity | — | 396 US gal (330 imp gal; 1,500 L) internal fuel tanks; 120 US gal (100 imp gal; 450 L) auxiliary external fuel tanks.[source] |
|---|
| Hardpoints | — | 2× side fuselage mounting stub/pylon stations[source] |
|---|
| Maximum overload take-off weight | — | 13,300 lb (6,000 kg)[source] |
|---|
| Rotor blade section | — | - root: KM23014.86; tip: KM23011.47[source] |
|---|
| Hover ceiling IGE | — | 18,600 ft (5,700 m)[source] |
|---|
| Hover ceiling OGE | — | 15,400 ft (4,700 m)[source] |
|---|
| Missiles | — | Non-US aircraft carry a variety of guided missiles , including the AGM-65 Maverick (often used in the anti-ship role) and dedicated anti-ship missiles .[source] |
|---|
| Country of origin | — | United States[source] |
|---|