helicopterjim Posted September 3, 2007 Report Share Posted September 3, 2007 Bell Helicopters is testing the new APRE rotor system that combines the simplicity of the 2 blade teetering rotor system with the capabilty to lead and lag. I believe it is some kind of active polymer used to construct the baldes! Hopefully this system will contribute to more apre heli-skiing. Quote Link to comment Share on other sites More sharing options...
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