Bell 412 vs Mitsubishi RP-1: Specs Compared

Bell 412 — licensed reference photograph

AHelicopters

Bell 412

Multipurpose utility helicopter

Credit

Sardaka · CC BY-SA 4.0 · Resized · CC BY-SA 4.0 · Source ↗ · Modified

BHelicopters

Mitsubishi RP-1

Experimental twin-engined helicopter

First system

Second system

At a glance

Side by side

Length comparisonOne shared metre scale

Bell 412Bell 412EP · including rotors

17.09 m

Length source ↗

Mitsubishi RP-1Length

15 m

Length source ↗

Lengths retain their source configuration and measurement scope.

Measured figures

Head to head

9 of 27 rows sourced on both sides

17.09mBell 412EP · including rotors

15m

Length

All recorded figures & sources

17.09 m

Bell 412EP · including rotors

Single source

56 ft 1 in (17.09 m) including rotors^[source]

15 m

Length

Single source

15.00 m (49 ft 2.5 in)^[source]

14.02mBell 412EP · Main rotor diameter

—

Rotor diameter

All recorded figures & sources

14.02 m

Bell 412EP · Main rotor diameter

Single source

46 ft 0 in (14.02 m)^[source]

4.57mBell 412EP · Height

4.3m

Height

All recorded figures & sources

4.57 m

Bell 412EP · Height

Single source

15 ft 0 in (4.57 m)^[source]

4.3 m

Height

Single source

4.30 m (14 ft 1.25 in)^[source]

5.4t

—

Mass

All recorded figures & sources

3,079 kg

Empty; Bell 412EP · Empty weight

Single source

5,398 kg

Maximum take-off; Bell 412EP · Max takeoff weight

Single source

6,789 lb (3,079 kg)^[source]

11,900 lb (5,398 kg)^[source]

260km/hMaximum; Bell 412EP · Maximum speed

—

Speed

All recorded figures & sources

226 km/h

Cruise; Bell 412EP · Cruise speed

Single source

260 km/h

Maximum; Bell 412EP · Maximum speed

Single source

140 kn (160 mph, 260 km/h)^[source]

122 kn (140 mph, 226 km/h)^[source]

980kmBell 412EP · Range

—

Range

All recorded figures & sources

980 km

Bell 412EP · Range

Single source

529 nmi (609 mi, 980 km)^[source]

930kW

447kW2 × Mitsubishi MG-5 Turboshaft each

PowerScopes differ

All recorded figures & sources

930 kW

Bell 412EP · 1 × Pratt & Whitney Canada PT6T-3D Twin-Pac or PT6T-3DF Twin-Pac coupled turboshaft engine - each, 1,250 shp (

Single source

1 × Pratt & Whitney Canada PT6T-3D Twin-Pac or PT6T-3DF Twin-Pac coupled turboshaft engine - each, 1,250 shp (930 kW)^[source]

447 kW

2 × Mitsubishi MG-5 Turboshaft each

Single source

2 × Mitsubishi MG-5 Turboshaft , 447 kW (600 hp) each^[source]

6,100mBell 412EP · Service ceiling

—

Service ceiling

All recorded figures & sources

6,100 m

Bell 412EP · Service ceiling

Single source

20,000 ft (6,100 m)^[source]

6.9m/sBell 412EP · 1,350 ft/min (

—

Rate of climb

All recorded figures & sources

6.9 m/s

Bell 412EP · 1,350 ft/min (

Single source

1,350 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.

Configuration

Details

Bell 412 and Mitsubishi RP-1 configuration
Specification	Bell 412	Mitsubishi RP-1
Crew	one-two pilots^[source]	—
Type	Multipurpose utility helicopter^[source]	Experimental twin-engined helicopter^[source]
National origin	United States / Canada^[source]	Japan^[source]
Manufacturer	Bell Helicopter^[source]	Mitsubishi Heavy Industries^[source]
Primary users	Japan Ground Self Defence Force See Operators for others^[source]	—
Number built	1,300+^[source]	1^[source]
Manufactured	1979–present^[source]	—
Introduction date	1981 ( 1981 )^[source]	—
First flight	August 1979 ( 1979-08 )^[source]	14 September 1994^[source]
Developed from	Bell 212^[source]	Sikorsky S-76^[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]	—
Developed into	—	Mitsubishi MH2000^[source]

FORCETALLY

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Bell 412

Mitsubishi RP-1

Crew

one-two pilots^[source]

—

Type

Multipurpose utility helicopter^[source]

Experimental twin-engined helicopter^[source]

National origin

United States / Canada^[source]

Japan^[source]

Manufacturer

Bell Helicopter^[source]

Mitsubishi Heavy Industries^[source]

Primary users

Japan Ground Self Defence Force See Operators for others^[source]

—

Number built

1,300+^[source]

1^[source]

Manufactured

1979–present^[source]

—

Introduction date

1981 ( 1981 )^[source]

—

First flight

August 1979 ( 1979-08 )^[source]

14 September 1994^[source]

Developed from

Bell 212^[source]

Sikorsky S-76^[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]

—

Developed into

—

Mitsubishi MH2000^[source]