Robinson Helicopters

Robinson R44 Raven II
four-seat light helicopter

Robinson R.44 Turbine


Robinson Helicopters

The Robinson R44 is a four-seat light helicopter produced by Robinson Helicopter Company since 1992.

Goto Sikorsky/Kaman Helicopters

Robinson R.44 Raven II

The Kaman SH-2G Super Seasprite is an American ship-based helicopter with anti-submarine, anti-surface threat capability, including over-the-horizon targeting. This aircraft extends and increases shipboard sensor and weapon capabilities against several types of enemy threats, including submarines of all types, surface ships, and patrol craft that may be armed with anti-ship missiles. It was originally developed for the United States Navy in 1980s as a reengined version of the older Kaman SH-2 Seasprite.

Operational History

In the 1990s, the Royal Australian Navy (RAN) decided that it needed an intermediate helicopter to operate from the Anzac-class frigates and the planned offshore patrol vessel (OPV); a proposed cooperative project with Malaysia, however, due to its size, the OPV could only operate a small helicopter. In 1997, the Australian Government signed a A$667 million contract with Kaman to purchase 11 upgraded Super Seasprites.[4] By 2005, up to 40 deficiencies in the helicopter had been identified, including the inability to operate in bad weather and low-light conditions, and its failure to meet Australian airworthiness standards.[5] The helicopters were initially restricted to transport duties during good weather before being grounded in May 2006.[

Robinson Helicopters


RoleLight utility and trainer helicopter
ManufacturerRobinson Helicopter Company
DesignerFrank D. Robinson
First flight31 March 1990
StatusIn production
Number built6,331+ (through 2019)
Developed fromRobinson R22
Developed intoRobinson R66


Specifications (Robinson R.44 Raven II)

General characteristics

  • Crew: 1/2
  • Capacity: 3/2 / 748 lb (339 kg)
  • Length: 38 ft 3 in (11.66 m)
  • Height: 10 ft 9 in (3.28 m)
  • Empty weight: 1,450 lb (658 kg)
  • Gross weight: 2,500 lb (1,134 kg)
  • Fuel capacity: Fuel: 100 Octane low lead (100LL) fuel or 100/130 Octane.
  • Main tank capacity: 31.6 US gal (26 imp gal; 120 l)
  • Main tank usable fuel: 30.6 US gal (25 imp gal; 116 l)
  • Auxiliary tank capacity: 18.5 US gal (15 imp gal; 70 l)
  • Auxiliary tank usable fuel: 18.3 US gal (15 imp gal; 69 l)
  • Powerplant: 1 × Lycoming IO-540-AE1A5 6-cylinder air-cooled horizontally-opposed piston engine, 245 hp (183 kW)
  • Main rotor diameter: 33 ft (10 m)
  • Main rotor area: 855.4 sq ft (79.47 m2)

Specifications (Robinson R.44 RAven II)



  • Maximum speed: 130 kn (150 mph, 240 km/h)
  • Cruise speed: 110 kn (130 mph, 200 km/h)
  • Range: 300 nmi (350 mi, 560 km)
  • Fuel consumption: 15 gallons per hour (12 imp gal/h; 57 l/h)[26][4]
  • Altitude restrictions: 14,000 ft (4,300 m) density altitude or 9,000 ft (2,700 m) above ground level in order to be able to reach ground within 5 minutes in case of fire.


Aircrafttoaal encyclopedia

An air force, also known in some countries as an aerospace force or air army, is in the broadest sense, the national military branch that primarily conducts aerial warfare.