Overview

Data on design, manufacture and status

Design authority: Brantly International Inc.

Primary manufacturer: Brantly International Inc.

Parent type: No type defined

Aircraft status: Operational

Configuration

Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1

Crew seating: Side-by-side

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

See the Dimensions section of the Specifications page

Overall Dimensions
Overall Height: 2.11 m 6.9 ft
Overall Length: 8.53 m 28.0 ft
Overall Width: 7.24 m 23.8 ft
Airframe Dimensions
Airframe Length:  
Airframe Width:  
Airframe Height: 2.11 m 6.9 ft
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track: 2.08 m 6.8 ft
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): 758 kg 1,670 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 758 kg 1,670 lb
Empty Weight: 485 kg 1,070 lb
Useful Load: 272 kg 600 lb
Empty Weight Fraction: 0.641
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE:  
Limitations
Max Level Flight Speed:  
Never Exceed Speed:  
Service Ceiling:  
Range and Endurance
Max Range:  
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: Lycoming IVO-360-A1A reciprocating
Manufacturer: Lycoming Engines
Normal Ratings
Max continuous:  
Take-off / rated: 134 kW 180 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

The inboard part of each blade (inboard of the outer articulation hinges) is set at an angle of incidence 4 degrees higher than the outboard part of the blade. The inboard flapping hinge was 2.67" from rotor center and the outboard flapping hinge at 51.85".

Main Rotor Characteristics
Diameter: 7.24 m 23.75 ft
RPM: 454.7 rpm 454.7 rpm
Direction of Rotation: Counterclockwise
Hub Type: Doubly articulated blade with I/B and O/B flap hinges
Main Rotor Blade Characteristics
Blade Construction:
Blade Chord: 0.203 m 0.67 ft
Blade Tip Geometry: Conventional
Blade Twist:  
Number of Blades: 3
Main Rotor Derived Characteristics
Disc Area: 41.16 m² 443.0 ft²
Disc Loading: 18.41 kg/m² 3.770 lb/ft²
Solidity: 0.0536
Main Rotor Blade Derived Characteristics
Blade area per blade: 0.74 m² 7.9 ft²
Tip Speed: 172.34 m/s 565.4 fps

Primary Control Device

Data on primary control devices such as tail rotors

The blade is tapered with a tip chord of 2.703" and a root chord of 4.187"

Tail Rotor Characteristics
Diameter: 1.30 m 4.25 ft
Configuration: Tractor
Direction of Rotation: Top blade fwd
RPM: 2800 rpm 2800 rpm
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction:
Blade Chord: 0.069 m 0.23 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 1.32 m² 14.2 ft²
Solidity: 0.0675
Tail Rotor Blade Derived Characteristics
Tip Speed: 189.92 m/s 623.1 fps
Blade Area (per blade): 0.044 m² 0.48 ft²

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