Produced beginning in 1958, the HH-43B (USAF designation) is a modification of the HH-43A.  A smaller turboshaft is used and installed above the fuselage, rather than an internal piston engine; as a result, the cabin capacity is upgraded from 4-5 up to ten passengers when compared to its predecessor.  The HH-43B was the first Kaman helicopter to be fitted with composite main rotor blades, instead of solid spruce like all those previous.

 Beginning in 1961, an H-43B set several records:

  • altiude record of 32,840 ft (10010 m)
  • rate-of-climb record of 3000 m in 2:42 minutes
  • rate-of-climb record of 6000 m in 6:49 minutes
  • rate-of-climb record of 9000 m in 14:12 minutes

Source: "Kaman Aerospace Corporation: Evolution of the Helicopter", R.H. Jones, Vertiflite, May/June 1984, Published by AHS International, Page 30.


Source: "The American Helicopter", Hirschberg, Michael,  2000, Page 59.


Data on design, manufacture and status

Design authority: Kaman Aircraft Corporation

Primary manufacturer: Kaman Aircraft Corporation

Parent type: Kaman K-600/H-43

Aircraft status: No longer flying


Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Synchropter (x2)

Crew required: 2

Crew seating: Side-by-side

Landing gear: Wheels (non-retractable)

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height:  
Overall Length: 14.33 m 47.0 ft
Overall Width:  
Airframe Dimensions
Airframe Length: 7.60 m 24.9 ft
Airframe Width: 2.54 m 8.3 ft
Airframe Height: 3.84 m 12.6 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: 113 mph (181.856 km/h)

Max Gross Weight (ground): 4,150 kg 9,150 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 4,150 kg 9,150 lb
Empty Weight: 1,940 kg 4,278 lb
Useful Load: 2,210 kg 4,872 lb
Empty Weight Fraction: 0.468
Climb Performance
Max Rate of Climb: 10 m/s 2,000 fpm
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Max Level Flight Speed: 193 km/h 104 kts
Never Exceed Speed:  
Service Ceiling: 7,833 m 25,700 ft
Range and Endurance
Max Range: 338 km 182 nm
Max Endurance:  

Engine Details

Aircraft powerplant (lift and/or propulsion)

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

Number of engines: 1
Designation: Lycoming T53-L-1B turbine
Manufacturer: Lycoming Engines
Normal Ratings
Max continuous:  
Take-off / rated: 642 kW 860 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: 14.33 m 47.01 ft
Direction of Rotation: Counter-rotating
Hub Type:
Main Rotor Blade Characteristics
Blade Construction: Composite
Blade Chord:  
Blade Tip Geometry: Flat
Blade Twist:  
Number of Blades: 2
Main Rotor Derived Characteristics
Disc Area: 161.28 m² 1736.1 ft²
Disc Loading: 12.87 kg/m² 2.635 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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