ULR  DF-333

Ultra Light Rotorcraft  DF-333

Main rotor [Diameter]: 6.70 m

Disc Loading – GW: 13.15 kg/m²

Tail rotor [Diameter]: 1.12 m

Cabin width: 1.25 m

Total length: 5.56 m

Height [cabin roof above ground]: 1,72 m

Height [main rotor above ground]: 2.36 m

Main rotor [100%]: 520 RPM

Fuel tank capacity: 60 liters

Gross weight: 450 Kg

Empy weight: 260 Kg

Useful loading: 190 Kg

Cruise speed @ SL [70% Power]: 78 Kts 145 Km/h

Max speed @ SL [Vne]: 96 Kts – 177 Km/h

Climbing rate: 6.50 m/s

Hover Ceiling IGE: 3.800 m

Hover Ceiling OGE 2.250 m

Endurance @ Cruise Speed: 3.5 h

Fuel consumption [70% Power]: ~ 16 liter/h

Max. Range [20’ reserve]: 500 Km

Height speed IAS – 50 ft: 28 Kts – 51,5 Km/h

Auto rotation IAS/min. ROD: 27 Kts – 50 Km/h

 

Engine

R.A.P. 98-90 I FOUR: 4 cyl, 4- stroke, 2.715 cc

Cylinder bore: 98 mm.

Stroke: 90 mm.

Compression ratio: 11 : 1

Max single engine power: 120 HP (3.250 RPM)

Cooling system: mixed oil-air (patented)

Starter: Electric

Fuel: 95 octane