Originally Posted by
bryancobb
I think there's very little chance the freewheeling unit could be expected to accelerate a 1000# fuselage and 800# of pax from ZERO to 180 deg/sec as fast as the video shows the tail swinging 90 degrees.
The formsprag would instantly explode with that much load applied in milliseconds if it froze. The only thing with enough muscle to snap the tail around that fast is the tail rotor. I just can't imagine anything that would stomp full right pedal in straight & level cruise. I do see ways the MRGB could progressively tear away first, and in the process, fold the tailboom into. I just am baffled. I am anxious to see the main rotor assembly when it comes up.
Could a progressive MGB tear away displace tail rotor controls (a bellcrank mount or control rod that runs near the MGB) in a way that would have the same effect as a full pedal deflection?