So how about it S-76 drivers: Would you swap your ride for an otherwise similar machine, but that could get the boss there at >4 times UK motorway speeds?
CEFOSKEY, thanks for the explanation. Even the plain vanilla fairing looks good, but those vortex generating turning vanes are a nice touch. I'm still confused by what looks like corrugation on the rotor shaft between the hubs. This is inside the machined casting structure for attaching the fairing bearings.
Dave, the hub fairing works best by blocking the blade root vortices which would otherwise form. Simply avoiding the fountain effect will improve rotor efficiency. It is a mechanically very simple way to achieve a useful gain.