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Robinson R44 Raven II
Type (Muster)Light helicopter (Leichthubschrauber)
Country (Land)
USA
Manufacturer (Hersteller)
Robinson Helicopter Company
2901 Airport Drive
Torrance, California 90505
USA
Phone: 001-310/539-0508
Fax: 001-310/539-5198
Internet: www.robinsonheli.com
General data (Allgemeine Angaben)
Crew (Besatzung): 1
Passengers (Passagiere): 3
Power plant (Antrieb): 1 x Lycoming IO-540
Power: 1 x 245 hp for take-off (5 minute rating), 205 hp maximum continuous
Dimensions (Abmessungen)
Overall length, rotors turning (Länge über drehende Rotoren): 11,63 m
Fuselage length (Rumpflänge): 8,94 m
Height (Höhe): 3,27 m
Width over landing gear (Breite): 2,18 m,
Rotor diameter (Rotordurchmesser): 10,03 m
Main rotor disc (Rotorkreisfläche): 79,4 sq m
Tail rotor diameter (Heckrotordurchmesser): 1,47 m
Weights (Massen)
Empty weight, equipped (Leermasse): 680 kg
Payload (Zuladung): 370 kg or 320 kg with auxiliary fuel
Standard fuel (Standardkraftstoff): 83 kg (115 l)
Auxiliary fuel (Zusatztank): 50 kg (69 l)
Max. take-off weight (Max. Startmasse): 1134 kg
Performance (Flugleistungen)
Cruise speed (Reisegeschw.) 209 km/h (113 kts)
Climb rate (Steigrate): over 5 m/s
Max. operating altitude (Dienstgipfelhöhe): 4267 m (14000 ft)
Hover ceiling (Schwebeflughöhe)
- out of ground effect (ohne Bodeneffekt): 1280 m (4200 ft) at 1134 kg, ISA
- out of ground effect (ohne Bodeneffekt): 2070 m (6800 ft) at 1043 kg take-off weight
- in ground effect (mit Bodeneffekt): 2560 m (8400 ft) at max. take-off weight, ISA
Max. Range, no reserve (Reichweite, ohne Reserven): ca. 640 km
Costs (Kosten)
The price of the R44 Raven II was given as 335000 US-Dollars in June 2002. This is about 28000 US-Dollars more than the Raven. Optional avionics will be priced the same.
Customers (Kunden)
Robinson started accepting orders for the Raven II version in June 2002.
Competition (Konkurrenz)
There is no direct competition to the R44 as it sits between smaller piston tpyes like the Schweizer 300 and Enstrom and much more expensive turbine helicopters like the Bell JetRanger or the MD Helicopters MD500-Series.
Remarks (Bemerkungen)
The R44 Raven II is the latest development of the R44 design, featuring
* a more powerful, fuel injected engine, giving much improved altitude performance
* a higher gross weight to compensate the higher empty weight
* a 28 volt electrical system
History (Geschichte)
The R44 Raven II was announced on June 18, 2002. It is expected to gain FAA certification in late August or early September.
Design of the origianl R44 began in 1985. The first prototype flew on 31. March 1990 and the second in January 1991.
In September 1999, Robinson introduced hydraulic power controls for the R44, first as an option. This completely eliminates stick vibration and control forces and immediately boosted sales. Thus, the new Raven variant was standard from April 2000.
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Copyright 2002 by Motor-Presse Stuttgart. All rights reserved.
Last updated 22 July 2002
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