Data on design, manufacture and status

Latest or last design authority: Bell
Originally designed by Bell Helicopter Textron, Inc.

Primary manufacturer: Bell Helicopter Textron, Inc.

Parent type: Bell AH-1 SuperCobra

Aircraft status: Operational


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: 4.37 m 14.3 ft
Overall Length: 17.75 m 58.3 ft
Overall Width: 14.63 m 48.0 ft
Airframe Dimensions
Airframe Length: 13.67 m 44.8 ft
Airframe Width: 4.06 m 13.3 ft
Airframe Height: 3.76 m 12.3 ft
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track: 2.21 m 7.3 ft
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): 8,391 kg 18,500 lb
Max Gross Weight (airborne): 8,391 kg 18,500 lb
Max Take-off Weight: 8,391 kg 18,500 lb
Empty Weight: 5,777 kg 12,736 lb
Useful Load: 2,615 kg 5,764 lb
Empty Weight Fraction: 0.688
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Max Level Flight Speed:  
Never Exceed Speed: 370 km/h 200 kts
Service Ceiling: 6,096 m 20,000 ft
Range and Endurance
Max Range: 232 km 125 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: GE T700-GE-401C turbine
Manufacturer: GE Aviation
Normal Ratings
Max continuous: 1240 kW 1662 hp
Take-off / rated:  
Intermediate: 1343 kW 1800 hp
Maximum: 1410 kW 1890 hp
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second: 1447 kW 1940 hp
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

Main Rotor Characteristics
Diameter: 14.63 m 48.00 ft
Direction of Rotation: Counterclockwise
Hub Type:  
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord: 0.635 m 2.08 ft
Blade Tip Geometry: Swept, outer tip
Blade Twist:  
Number of Blades: 4
Main Rotor Derived Characteristics
Disc Area: 168.11 m² 1809.6 ft²
Disc Loading: 49.92 kg/m² 10.223 lb/ft²
Solidity: 0.1105
Main Rotor Blade Derived Characteristics
Blade area per blade: 4.65 m² 50.0 ft²
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Configuration: Pusher
Direction of Rotation: Unknown
Tail Rotor Blade Characteristics
Number of Blades: 4
Blade Construction:  
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

Related VFS Resources

Resources related to the AH-1Z Viper, provided by the Vertical Flight Society.
Forum Proceedings
Vertiflite articles
Enter a search term in the box above.
Web files from vtol.org
Enter a search term in the box above.
Webpages from vtol.org
Enter a search term in the box above.

Related Public Resources

Resources related to the AH-1Z Viper, provided by public sources across the internet.