As of 2014, an R44 holds the piston speed record of 227 km/h. In 1997, a Robinson R44 was piloted by Jennifer Murray for the first helicopter circumnavigation of the world by a woman, covering a distance of 36,000 miles in 97 days. The diesel could provide better altitude performance, a fuel burn reduced from 16 to 12 US gal (61 to 45 L) per hour and better fuel availability. Robinson has carried out ground run testing with an aircraft diesel engine that could replace its Lycoming IO-540 avgas engine. In July 2002, Robinson introduced the Raven II featuring a more powerful, fuel-injected engine and wider blades, allowing a higher gross weight and improved altitude performance.ĭuring November 2015 Robinson announced the Cadet, a Raven I with a cargo area instead of the two back seats, a slightly less powerful engine and a more efficient muffler. In January 2000, Robinson introduced the Raven with hydraulically assisted controls and adjustable pedals. The first R44 Newscopter featuring onboard electronic news gathering equipment was delivered in 1998. The R44 Astro was awarded an FAA Type Certificate in December 1992, with the first deliveries taking place in January 1993. On the R44 the advancing blade is on the bottom.ĭesigned during the 1980s by Frank Robinson and his staff of engineers, the R44 first flew on 31 March 1990. Tail rotor direction of rotation on the R44 is reversed compared to the R22 for improved yaw control authority. It has an enclosed cabin with two rows of side-by-side seating for a pilot and three passengers.
The R44 is a single-engined helicopter with a semi-rigid two-bladed main rotor, a two-bladed tail rotor and a skid landing gear.
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