Development of the Russian helicopter, the Kamov Ka-31 (NATO Designation: 'Helix-B'), began in 1985; production started in 1998.  Formerly known as the Ka-29RLD, a variant of the Ka-29, the airframe design is based on the Kamov Ka-27.  Equipped with Real Time Kinematic (RTK) surveillance radar equipment, the helicopter is designed to monitor air and sea spaces.  The aircraft radar is within operating range at heights of 1500–3500 meters and can be transmitted to more than 150 km; the antenna panel spans 6 meters and rotates with a scan interval of 10 seconds.

Overview

Data on design, manufacture and status

Design authority: Kamov Design Bureau

Primary manufacturer: Kamov

Parent type: No type defined

Aircraft status: Operational

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Coaxial (x2)

Crew required: 2

Crew seating: Side-by-side

Landing gear: Wheels (all retractable)

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 5.60 m 18.4 ft
Overall Length: 15.90 m 52.2 ft
Overall Width: 15.90 m 52.2 ft
Airframe Dimensions
Airframe Length: 12.50 m 41.0 ft
Airframe Width: 3.80 m 12.5 ft
Airframe Height: 5.60 m 18.4 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

Weights
Max Gross Weight (ground): 12,500 kg 27,558 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 12,500 kg 27,558 lb
Empty Weight:  
Useful Load:  
Empty Weight Fraction:  
Climb Performance
Max Rate of Climb: 12 m/s 2,362 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed: 250 km/h 135 kts
Never Exceed Speed:  
Service Ceiling: 5,000 m 16,404 ft
Range and Endurance
Max Range: 680 km 367 nm
Max Endurance: 3 hrs 3 hrs

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Powerplant
Number of engines: 2
Designation: Motor Sich TV3-117VMA turbine
Manufacturer: Motor Sich
Normal Ratings
Max continuous:  
Take-off / rated: 1640 kW 2198 hp
Intermediate: 1618 kW 2169 hp
Maximum:  
OEI Ratings
OEI contingency: 1765 kW 2366 hp
OEI continuous:  
OEI 30-second:  
OEI intermediate: 1618 kW 2169 hp

Primary Lift Device

Data on primary lift devices such as main rotors

Main Rotor Characteristics
Diameter: 15.90 m 52.17 ft
RPM:  
Direction of Rotation: Counter-rotating
Hub Type: Coaxial
Main Rotor Blade Characteristics
Blade Construction: Composite
Blade Chord:  
Blade Tip Geometry: Flat
Blade Twist:  
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 198.56 m² 2137.3 ft²
Disc Loading: 31.48 kg/m² 6.447 lb/ft²
Solidity:  
Main Rotor Blade Derived Characteristics
Blade area per blade:  
Tip Speed:  

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter:  
Configuration: Unknown
Direction of Rotation: Unknown
RPM:  
Tail Rotor Blade Characteristics
Number of Blades:  
Blade Construction: N/A
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Solidity:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

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Related Public Resources

Resources related to the Ka-31 , provided by public sources across the internet.

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