Credit
Sardaka · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified
FORCETALLY
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Measured figures
Bell 412EP · including rotors
Single source56 ft 1 in (17.09 m) including rotors[source]
Configuration
| Specification | Bell 412 | Fenestron |
|---|---|---|
| Crew | one-two pilots[source] | — |
| Type | Multipurpose utility helicopter[source] | — |
| National origin | United States / Canada[source] | — |
| Manufacturer | Bell Helicopter[source] | — |
| Primary users | Japan Ground Self Defence Force See Operators for others[source] | — |
| Number built | 1,300+[source] |
Bell 412EP · Main rotor diameter
Single source46 ft 0 in (14.02 m)[source]
Bell 412EP · Height
Single source15 ft 0 in (4.57 m)[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]
Bell 412EP · Service ceiling
Single source20,000 ft (6,100 m)[source]
Bell 412EP · 1,350 ft/min (
Single source1,350 ft/min (6.9 m/s)[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
| — |
| Manufactured | 1979–present[source] | — |
|---|
| Introduction date | 1981 ( 1981 )[source] | — |
|---|
| First flight | August 1979 ( 1979-08 )[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] | — |
|---|
| 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] | — |
|---|
| Power/mass | 0.2663 hp/lb (0.4378 kW/kg)[source] | — |
|---|
| Role | — | enclosed helicopter tail rotor[source] |
|---|
| Source measurement | — | During the 1990s, a third generation Fenestron was produced by Eurocopter (Aérospatiale's multinational successor), equipped with unevenly-spaced blades in order to optimize its noise levels; this unit was first fitted onto the company's EC135 helicopter, and was later incorporated into the designs of the EC130 and the EC145 , the latter of which had been produced for over a decade with a conventional tail rotor. During the 2010s, multinational helicopter manufacturer Airbus Helicopters (a rebranded version of the Eurocopter entity) developed the Fenestron further for their new H160 helicopter, a medium-twin sized rotorcraft; in this revision, the fan duct was intentionally sloped by 12 degrees to achieve improved performance and greater stability when being operated with higher payloads and flown at lower speeds.[source]Fenestron · History; only the objects and conditions stated in this passage |
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