BERP rotor
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The BERP rotor blade design was developed under the British Experimental Rotor Programme. The initial BERP rotor blades were developed in the late 1970s to mid 1980s as a joint venture programme between Westland Helicopters and the Royal Aircraft Establishment. The goal was to increase the helicopters lifting-capability and maximum speed using new designs and materials.
BERP designs have a notch toward the outer end of the rotor blade, with a greater amount of sweepback from the notch to the end of the blade compared to inboard of the notch.[1]
The initial version was BERP I, which was used on the Westland Lynx 800 helicopter. In 1986, a Lynx 800 specially modified registered G-LYNX and piloted by John Egginton set an absolute speed record for helicopters over a 15 and 25 km course by reaching 400.87 km/h (249.09 mph).[1]
Current applications are:
- BERP III:
- AgustaWestland AW101
- Upgraded Westland Super Lynx
- BERP IV:
[edit] References
- ^ a b J. Gordon Leishman "ENAE 632 - The British Experimental Rotor Program (BERP) Blade ", University of Maryland, College Park, Retrieved 11 April 2010
[edit] Further reading
- Brocklehurst, Alan. AIAA-1990-3008, "Experimental and numerical study of the British Experimental Rotor Programme blade". AIAA, 1990.
[edit] External links
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