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FAST ROTOR BLADE ADJUSTMENT
Only with an active actuation of each individual rotor blade is it possible to use a rotor systems potential to the full extent, to counteract interference noise caused by blade vortices, and to lower the vibrations. This is why Eurocopter is flight testing a Bo 105 with hydraulic servos from ZF Luftfahrttechnik. Just recently the aircraft was used for a test campaign at Oberpfaffenhofen airfield.However, piezo-powered servo flaps in the outer rotor area, elastically twisting the blade by approximately 1,5 degrees, are better suited for the future utilization of an individual blade control system. A one meter long model with a flap length of 0,5 meters is currently under assembly and will be tested in the transonic windtunnel in Göttingen. However, it will probably take some time before the system matures to production standards.
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Last updated January 15, 1998