Flown for the first time in the Spring of 1958, the K-17 is the product of U.S. Army and Kaman cooperation.  The helicopter is a cold tip jet system; the engine sends compressed air to the tip-jet nozzles.  The main rotor is flap controlled and the ducted tail rotor is controlled by hydraulic power, allowing change in direction.

Source: Alex, Ralph P. "Helicopters from 'A to Z', Part III". American Helicopter Society Newsletter, Vol. 7, 1961. Page 5.


Data on design, manufacture and status

Design authority: Kaman Aircraft Corporation

Primary manufacturer: Kaman Aircraft Corporation

Parent type: No type defined

Aircraft status: No longer flying


Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Fenestron/Shrouded tail rotor

Crew required: 2

Crew seating: Side-by-side

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 2.59 m 8.5 ft
Overall Length: 11.28 m 37.0 ft
Overall Width: 11.28 m 37.0 ft
Airframe Dimensions
Airframe Length:  
Airframe Width:  
Airframe Height:  
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): 907 kg 2,000 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 907 kg 2,000 lb
Empty Weight: 431 kg 950 lb
Useful Load: 476 kg 1,050 lb
Empty Weight Fraction: 0.475
Climb Performance
Max Rate of Climb: 6 m/s 1,260 fpm
Hover Performance
Hover Ceiling IGE: 1,524 m 5,000 ft
Hover Ceiling OGE:  
Max Level Flight Speed: 129 km/h 70 kts
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range:  
Max Endurance: 2 hrs 2 hrs

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Number of engines: 2
Designation: Turbomeca Turmo 600 turbine
Manufacturer: Turbomeca
Normal Ratings
Max continuous:  
Take-off / rated: 298 kW 400 hp
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: 11.28 m 37.00 ft
Direction of Rotation: Unknown
Hub Type:
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord:  
Blade Tip Geometry:
Blade Twist:  
Number of Blades: 2
Main Rotor Derived Characteristics
Disc Area: 99.89 m² 1075.2 ft²
Disc Loading: 9.08 kg/m² 1.860 lb/ft²
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
Configuration: Unknown
Direction of Rotation: Unknown
Tail Rotor Blade Characteristics
Number of Blades:  
Blade Construction: N/A
Blade Chord:  
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area:  
Tail Rotor Blade Derived Characteristics
Tip Speed:  
Blade Area (per blade):  

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