Four-seat R44 Raven II and Clipper II helicopters are high performing, reliable and easy to maintain. R44s have a two-bladed rotor system, T-bar cyclic and the latest in Robinson technology including streamlined instrument panels and crashworthy bladder fuel tanks. The R44’s aerodynamic fuselage optimizes airspeed and fuel economy. Hydraulic controls eliminate feedback forces and provide responsive handling. A low tail-rotor tip speed, newly designed muffler and large cambered tail reduce flyover noise. Raven II and Clipper II helicopters are powered by Lycoming’s IO-540 fuel injected engine. The IO-540 delivers better altitude performance, increased payload and eliminates the need for carburetor heat.
| SPECIFICATION | RAVEN II | |
|---|---|---|
| Engine | Lycoming IO-540, six cylinder, fuel injected | |
| Horsepower | Derated to 245 for takeoff and 205 continuous | |
| Maximum Gross Weight | 2500 lb (1134 kg) | |
| Approximate Empty Weight (incl. oil & standard avionics) | 1505 lb (683 kg) | |
| Standard Fuel (29.5 gal) | 177 lb (80 kg) | |
| Auxiliary Fuel (17.0 gal) | 102 lb (46 kg) | |
| Pilot, Passengers, and Baggage (with standard fuel) | 818 lb (371 kg) | |
| Cruise Speed at Maximum Gross Weight | up to 109 kts (202 km/h) | |
| Maximum Range (no reserve) | approx 300 nm (550 km) | |
| Hover Ceiling IGE | 8950 ft @ 2500 lb | |
| Hover Ceiling OGE | 7500 ft @ 2300 lb | |
| Rate of Climb | over 1000 fpm | |
| Maximum Operating Altitude | 14,000 ft | |
| Electrical System | 28 volt |