Developed in 1957 by Kaman and the US Navy Bureau of Aeronautics, commonly used in Search and Rescue (SAR) missions; may be fitted with a 200 ft (61 m) hoist.  A single engine utility helicopter of conventional design.  The cabin accomodates up to 14 passengers, including the crew.  The US Army designation was H-2 Tomahawk.

Overview

Data on design, manufacture and status

Design authority: Kaman Aircraft Corporation

Primary manufacturer: Kaman Aircraft Corporation

Parent type: Kaman K-800/H-2 Seasprite

Aircraft status: No longer flying

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: TBA

Crew seating: Side-by-side

Landing gear: Wheels (some retractable)

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height:  
Overall Length:  
Overall Width: 13.41 m 44.0 ft
Airframe Dimensions
Airframe Length: 11.15 m 36.6 ft
Airframe Width:  
Airframe Height: 3.76 m 12.3 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

Cruise Speed: 152 mph (245 km/h)

Weights
Max Gross Weight (ground): 4,844 kg 10,679 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 4,844 kg 10,679 lb
Empty Weight: 2,336 kg 5,150 lb
Useful Load: 2,508 kg 5,529 lb
Empty Weight Fraction: 0.482
Climb Performance
Max Rate of Climb: 11 m/s 2,100 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed: 269 km/h 145 kts
Never Exceed Speed:  
Service Ceiling: 5,304 m 17,402 ft
Range and Endurance
Max Range: 885 km 478 nm
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Powerplant
Number of engines: 1
Designation: GE T58-GE-8B turbine
Manufacturer: GE Aviation
Normal Ratings
Max continuous:  
Take-off / rated: 933 kW 1250 hp
Intermediate:  
Maximum:  
OEI Ratings
OEI contingency:  
OEI continuous:  
OEI 30-second:  
OEI intermediate:  

Primary Lift Device

Data on primary lift devices such as main rotors

Main Rotor Characteristics
Diameter: 13.41 m 44.00 ft
RPM:  
Direction of Rotation: Counterclockwise
Hub Type:
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:  
Blade Tip Geometry:
Blade Twist:  
Number of Blades: 4
Main Rotor Derived Characteristics
Disc Area: 141.24 m² 1520.3 ft²
Disc Loading: 34.30 kg/m² 7.025 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: Pusher
Direction of Rotation: Top blade aft
RPM:  
Tail Rotor Blade Characteristics
Number of Blades: 3
Blade Construction:  
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Solidity:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

Related VFS Resources

Resources related to the K-20 / HU2K-1 (UH-2A Seasprite, H-2 Tomahawk), provided by the Vertical Flight Society.
Forum Proceedings
 
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Web files from vtol.org
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Related Public Resources

Resources related to the K-20 / HU2K-1 (UH-2A Seasprite, H-2 Tomahawk), provided by public sources across the internet.

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