X2 Vibs
The X2 team is happy with the vibration levels at the modest speeds achieved to date, but of course the next testing phase will be challenging in that respect as well as several others. As opposed to the XH-59 design, however, they have S-92 style active vibration absorbers installed and available for use if need be. I'm just a rabid fan on the outside now, but I have high hopes for that team.
Thanks,
John Dixson