Although Sikorsky stated that they had received approval from the National Aeronautic Association (NAA, the FAI representative organization in the United States) that the X2 would be considered a helicopter for purposes of a record because it did not have wings, Sikorsky management decided not to test the aircraft beyond its stated goal of 250 kt. The FAI has never recognized an official speed record for a wing-augmented and/or thrust augmented helicopter. More information on and references for this aircraft is found in the AHS Vertipedia entry. The high-speed demonstrator uses blade tips that are similar in shaping to the BERP blades (sometimes jokingly refered to as "RERP" blades). The Mi-24LL is a single-seat "Flying Laboratory" ("LL" in Russian) modification of the Mi-24 Hind. To be a record to dethrone the G-LYNX, an aircraft would need to fly a sustained, average speed greater than 216 kt/400 km/hr over a similar distance, in opposite directions to account for wind differences. Nonetheless, neither the company nor any Russian entity is claiming this as a record. Interfax news stated that the Russian Helicopters Mi-24LL PSV demonstrator has flown to a cruise speed “greater than 405 km/hr (219 kt).” The news report was in late October 2016, though unconfirmed reports suggest that it had taken place several weeks earlier. Perry, Westland Helicopters Ltd., presented at Forum 43, May 1987. More details of the aerodynamic technology behind the record can be found in the AHS Vertical Flight Library, part of the AHS Online Store: The Aerodynamics of the Helicopter World Speed Record, F. The aircraft was extensively modified, including BERP III type blades and 1,200 shp Rolls-Royce Gem 60 engines, amongst many other modifications. The record course covered 15km from East Huntspill to Hartlake Bridge in Somerset, England - see FAI Record Category E-Absolute (Absolute Record for class E - Record ID 11659) The modified Westland Lynx AH.1 (registration G-LYNX) achieved the absolute speed record for a rotorcraft (216 kt/400.87 km/hr), piloted by Westland Chief Test Pilot Trevor Egginton with Derek Clews, Flight Test Engineer. In conjunction with the 30th anniversary of the current world speed record, set on Augby the Westland Lynx G-LYNX, this page gives further explanation and resources, as a complement to the recent Vertiflite article, The Absolute World Helicopter Speed Record: Held for 30 Years and Counting, Sept/Oct 2016.įrom the AHS Vertipedia entry for this milestone:Ībsolute World Speed Record for helicopters achieved, was set on Monday, Augat Somerset Levels, Glastonbury, United Kingdom.
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