Data on design, manufacture and status

Design authority: Bell Helicopter Textron, Inc.

Primary manufacturer: Bell Helicopter Textron, Inc.

Parent type: Bell Model 209/AH-1 Cobra

Aircraft status: Status unknown


Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 2

Crew seating: Tandem

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 4.19 m 13.7 ft
Overall Length: 17.70 m 58.1 ft
Overall Width: 14.60 m 47.9 ft
Airframe Dimensions
Airframe Length: 13.90 m 45.6 ft
Airframe Width: 3.28 m 10.8 ft
Airframe Height: 4.17 m 13.7 ft
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track:  
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width:  

Weights and Performance

Data on aircraft weight and flight characteristics

Max Gross Weight (ground): 4,536 kg 10,000 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 4,536 kg 10,000 lb
Empty Weight: 2,998 kg 6,610 lb
Useful Load: 1,538 kg 3,390 lb
Empty Weight Fraction: 0.661
Climb Performance
Max Rate of Climb: 6 m/s 1,090 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Max Level Flight Speed: 333 km/h 180 kts
Never Exceed Speed: 333 km/h 180 kts
Service Ceiling: 3,200 m 10,500 ft
Range and Endurance
Max Range: 574 km 310 nm
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

Provided powerplant data is for uninstalled, sea level, static operations.

Number of engines: 2
Designation: P&WC T400-CP-400 turbine
Manufacturer: Pratt & Whitney Canada
Normal Ratings
Max continuous:  
Take-off / rated:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

B540 blade for two-bladed Cobra main rotors.

Main Rotor Characteristics
Diameter: 13.40 m 43.96 ft
RPM: 324.0 rpm 324.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Flex-beam, stiff-in-plane teetering hub
Main Rotor Blade Characteristics
Blade Construction: Bonded aluminum spar and skin; nomex honeycomb core
Blade Chord: 0.686 m 2.25 ft
Blade Tip Geometry: Square-edged tips
Blade Twist: -0.175 rad -10.000 deg
Number of Blades: 2
Main Rotor Derived Characteristics
Disc Area: 141.03 m² 1518.0 ft²
Disc Loading: 32.16 kg/m² 6.588 lb/ft²
Solidity: 0.0652
Main Rotor Blade Derived Characteristics
Blade area per blade: 4.59 m² 49.5 ft²
Tip Speed: 227.33 m/s 745.8 fps

Primary Control Device

Data on primary control devices such as tail rotors

Some images show the tail rotor in a 'tractor' type configuration so it appears that configuration changed at some point

Tail Rotor Characteristics
Diameter: 2.59 m 8.50 ft
Configuration: Pusher
Direction of Rotation: Top blade aft
RPM: 1654 rpm 1654 rpm
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction: Bonded aluminum skin with abrasion strip
Blade Chord: 0.213 m 0.70 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 5.27 m² 56.7 ft²
Solidity: 0.1049
Tail Rotor Blade Derived Characteristics
Tip Speed: 224.30 m/s 735.9 fps
Blade Area (per blade): 0.276 m² 2.97 ft²

Related VFS Resources

Resources related to the AH-1J SeaCobra, provided by the Vertical Flight Society.
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Related Public Resources

Resources related to the AH-1J SeaCobra, provided by public sources across the internet.