Robinson R44

Robinson R44

CountryUSA
RoleLight utility and trainer helicopter
First flight31 March 1990
Built6400+

The Robinson R44 is a four-seat light helicopter produced by Robinson Helicopter Company since 1992. Based on the company’s two-seat Robinson R22, the R44 features hydraulically assisted flight controls. It was first flown on 31 March 1990 and received FAA certification in December 1992, with the first delivery in February 1993.

Source: Robinson R44 on Wikipedia

Robinson R44 Raven II
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Robinson R44 Large Mahogany Model - Amazon

See also:

World War II: The Definitive Visual History from Blitzkrieg to the Atom Bomb (DK Definitive Visual Histories) - Amazon World War II Map by Map (DK History Map by Map) - Amazon


General Characteristics (Raven II Variant)

The Robinson R44 is a popular four-seat, single-engine piston helicopter, widely recognized for its reliability, efficiency, and relatively low operating costs. It is derived from the smaller, two-seat R22 and is extensively used globally for flight training, corporate transport, tourism, and law enforcement.

Property Typical Value (R44 Raven II)
Role Light Utility / Trainer / Personal Transport
Manufacturer Robinson Helicopter Company
First Flight March 31, 1990
Crew 1 pilot
Capacity (Passengers) 3 passengers
Main Rotor Diameter 10.1 m (33 ft 0 in)
Max Takeoff Weight 1,134 kg (2,500 lb)

Design and Powerplant

  • Engine: One Lycoming IO-540-AE1A5 six-cylinder, fuel-injected piston engine (Raven II). The Raven I uses a carbureted O-540.
  • Horsepower: Derated to 245 hp for takeoff and 205 hp continuous (Raven II).
  • Rotor System: Semi-rigid two-bladed main rotor and a two-bladed tail rotor.
  • Controls: Features hydraulically boosted controls to reduce pilot effort and enhance maneuverability.
  • Safety Feature: Equipped with a crashworthy fuel system that includes bladder fuel tanks to mitigate the risk of post-accident fire.
  • Variants: Includes the Raven I (carbureted engine), Raven II (fuel-injected engine), Clipper (with floats for water landings), and Cadet (two-seat trainer/utility).

Performance and Capabilities

  • Maximum Airspeed (Vne): Up to 241 km/h (130 knots, 150 mph).
  • Cruise Speed: Up to 202 km/h (109 knots, 126 mph).
  • Service Ceiling: 4,267 m (14,000 ft).
  • Maximum Range (No Reserve): Approximately 560 km (300 nautical miles).
  • Rate of Climb: Over 1,000 ft/min (5.1 m/s).
  • Useful Load: Approximately 451 kg (995 lb) (varies by variant and fuel load).
  • Fuel Type: Operates on Aviation Gasoline (AVGAS 100LL).

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