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]
OH-6A · including rotors
Configuration
| Specification | Bell 412 | Hughes OH-6 Cayuse |
|---|---|---|
| Type | Multipurpose utility helicopter[source] | Light Observation Helicopter /utility[source] |
| National origin | United States / Canada[source] | United States[source] |
| Manufacturer | Bell Helicopter[source] | Hughes Helicopters McDonnell Douglas Helicopter Systems MD Helicopters[source] |
| Primary users | Japan Ground Self Defence Force See Operators for others[source] |
30 ft 3.75 in (9.2393 m) including rotors[source]
Bell 412EP · Range
Single source529 nmi (609 mi, 980 km)[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]
OH-6A · 1 × Allison T63-A-5A turboshaft engine, 317 shp ( ) de-rated to
Single source1 × Allison T63-A-5A turboshaft engine, 317 shp (236 kW) de-rated to:-[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] | 1,420 (OH-6A)[source] |
|---|
| Manufactured | 1979–present[source] | 1965–present[source] |
|---|
| Introduction date | 1981 ( 1981 )[source] | 1966[source] |
|---|
| First flight | August 1979 ( 1979-08 )[source] | February 27, 1963[source] |
|---|
| 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] | 2 seated passengers or 4 on the floor with rear seats folded/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] | 544.63 sq ft (50.598 m 2 )[source] |
|---|
| Power/mass | 0.2663 hp/lb (0.4378 kW/kg)[source] | 0.105 shp/lb (0.173 kW/kg)[source] |
|---|
| Status | — | In service[source] |
|---|
| Primary user | — | United States Army[source] |
|---|
| Variants | — | MD Helicopters MH-6 Little Bird MD Helicopters MD 500 McDonnell Douglas MD 500 Defender[source] |
|---|
| Fuel capacity | — | 61.5 US gal (51 imp gal; 233 L) in two 50% self-sealing bladder tanks under rear cabin floor[source] |
|---|
| Blade section | — | - NACA 0012[source] |
|---|
| Never exceed speed | — | 130 kn (150 mph, 240 km/h) at Sea Level[source] |
|---|
| Hover ceiling OGE | — | 7,300 ft (2,225 m)[source] |
|---|
| Hover ceiling IGE | — | 11,800 ft (3,597 m)[source] |
|---|
| Disk loading | — | 4.4 lb/sq ft (21 kg/m 2 )[source] |
|---|
Maximum take-off; OH-6A · Max takeoff weight
Single source