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]
R22 · Length
Single sourceConfiguration
| Specification | Bell 412 | Robinson R22 |
|---|---|---|
| Crew | one-two pilots[source] | 1/2[source] |
| Type | Multipurpose utility helicopter[source] | Light utility and trainer helicopter[source]R22 |
| National origin | United States / Canada[source] | — |
| Manufacturer | Bell Helicopter[source] | Robinson Helicopter Company[source]R22 |
28 ft 8 in (8.74 m)[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]
R22 · 1 × Lycoming O-320-A2B or -A2C 4-cylinder air-cooled horizontally-opposed piston engine
Single source1 × Lycoming O-320-A2B or -A2C 4-cylinder air-cooled horizontally-opposed piston engine, 124 hp (92 kW)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| Primary users |
|---|
Japan Ground Self Defence Force See Operators for others[source] |
| — |
| Number built | 1,300+[source] | over 4,800 (2019)[source]R22 |
|---|
| Manufactured | 1979–present[source] | 1979–present[source]R22 |
|---|
| Introduction date | 1981 ( 1981 )[source] | 1979[source]R22 |
|---|
| First flight | August 1979 ( 1979-08 )[source] | 1975[source]R22 |
|---|
| Developed from | Bell 212[source] | — |
|---|
| Variant | Bell CH-146 Griffon[source] | — |
|---|
| Capacity | up to 13 passengers, maximum external load of almost 6,614 lb (3,000 kg)[source] | 1/0[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] | 497 sq ft (46.2 m 2 )[source] |
|---|
| Power/mass | 0.2663 hp/lb (0.4378 kW/kg)[source] | 0.095 hp/lb (0.156 kW/kg)[source] |
|---|
| Designer | — | Frank D. Robinson[source]R22 |
|---|
| Status | — | In production[source]R22 |
|---|
| Developed into | — | Robinson R44[source]R22 |
|---|
| Fuel capacity | — | Main tank total capacity: 16.9 US gal (14 imp gal; 64 L) Optional auxiliary tank total capacity: 10.9 US gal (9 imp gal; 41 L)[source] |
|---|
| Main tank total capacity | — | 16.9 US gal (14 imp gal; 64 L)[source] |
|---|
| Optional auxiliary tank total capacity | — | 10.9 US gal (9 imp gal; 41 L)[source] |
|---|
| Tail rotor diameter | — | 3 ft 6 in (1.1 m)[source] |
|---|
| Blade section | — | - NACA 63-015[source] |
|---|
| Never exceed speed | — | 102 kn (117 mph, 189 km/h)[source] |
|---|
| Disk loading | — | 2.61 lb/sq ft (12.7 kg/m 2 )[source] |
|---|
| Fuel consumption | — | 8–10 gal/h (7–8 imp gal/h; 30–38 L/h)[source] |
|---|