A two-seat ultralight helicopter meant for recreational or training flights. This aircraft is unique as it is the only helicopter to feature a ballistic parachute, which is located above the main rotor.


Data on design, manufacture and status

Design authority: Curti Aerospace

Primary manufacturer: Curti Aerospace

Parent type: No type defined

Aircraft status: In development


Primary flight and mechanical characteristics

VTOL type: Helicopter

Lift configuration: Single main rotor

Dedicated control device: Tail rotor

Crew required: 1-2

Crew seating: Side-by-side

Landing gear: Skids

Layout and Dimensions

Data on aircraft size

Overall Dimensions
Overall Height: 2.50 m 8.2 ft
Overall Length: 8.70 m 28.5 ft
Overall Width: 1.60 m 5.2 ft
Airframe Dimensions
Airframe Length: 6.80 m 22.3 ft
Airframe Width: 1.60 m 5.2 ft
Airframe Height: 2.00 m 6.6 ft
Landing Gear Dimensions
Landing Gear Base:  
Landing Gear Track: 1.60 m 5.2 ft
Cabin Dimensions
Cabin Internal Height:  
Cabin Internal Length:  
Cabin Internal Width: 1.40 m 4.6 ft

Weights and Performance

Data on aircraft weight and flight characteristics

The values for the Max range and the Max level flight speed are taking into account a 10-minute reserve, as this was provided by the manufacturer.

Max Gross Weight (ground): 700 kg 1,543 lb
Max Gross Weight (airborne):  
Max Take-off Weight: 700 kg 1,543 lb
Empty Weight:  
Useful Load:  
Empty Weight Fraction:  
Climb Performance
Max Rate of Climb:  
Hover Performance
Hover Ceiling IGE:  
Hover Ceiling OGE: 4,000 m 13,123 ft
Max Level Flight Speed: 185 km/h 100 kts
Never Exceed Speed: 189 km/h 102 kts
Service Ceiling:  
Range and Endurance
Max Range: 318 km 172 nm
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: 1
Designation: PBS Aerospace TS100 turbine
Manufacturer: PBS GROUP, a.s.
Normal Ratings
Max continuous: 105 kW 141 hp
Take-off / rated: 180 kW 241 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: 7.60 m 24.93 ft
RPM: 528.0 rpm 528.0 rpm
Direction of Rotation: Counterclockwise
Hub Type: Teetering
Main Rotor Blade Characteristics
Blade Construction: Metal
Blade Chord: 0.195 m 0.64 ft
Blade Tip Geometry: Flat
Blade Twist:  
Number of Blades: 2
Main Rotor Derived Characteristics
Disc Area: 45.36 m² 488.3 ft²
Disc Loading: 15.43 kg/m² 3.160 lb/ft²
Solidity: 0.0327
Main Rotor Blade Derived Characteristics
Blade area per blade: 0.74 m² 8.0 ft²
Tip Speed: 210.11 m/s 689.3 fps

Primary Control Device

Data on primary control devices such as tail rotors

Tail Rotor Characteristics
Diameter: 1.20 m 3.94 ft
Configuration: Pusher
Direction of Rotation: Top blade aft
RPM: 3062 rpm 3062 rpm
Tail Rotor Blade Characteristics
Number of Blades: 2
Blade Construction: Metal
Blade Chord: 0.120 m 0.39 ft
Blade Twist:  
Tail Rotor Derived Characteristics
Disc Area: 1.13 m² 12.2 ft²
Solidity: 0.1273
Tail Rotor Blade Derived Characteristics
Tip Speed: 192.39 m/s 631.2 fps
Blade Area (per blade): 0.072 m² 0.78 ft²

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