How many Tail Rotor Blades?
[QUOTEThe rotor sound didn't seem very different than the USN standard 5-blade rotors on the SH-3H, though. I guess the Carson blades and the new tail rotor sound much the same as the old ones & 4 blade tr. [/QUOTE]
That's because it isn't very different from the USN 5 bladed TR, except the TRBs are of a Westland design. The usual configuration for a UK SK is a 6 bladed TR, not sure I've ever seen one with 4 (though I did see one with a TRB on backwards once!)
Nick