posted on Jun, 27 2003 @ 05:49 AM
I'm really not understanding the engine power thing, as a helicopter's rotor speed is not altered during flight. The blades and rotor head are used
to change speed and direction.
For example, on the blackhawk, which has four mains, two are used for lift when the other two are used for direction.
The CH-53 has 5 main blades, but that is one noisy beast, but its a huge one.
The Apache is quiet, but again, its not because of any secret component but the shape and number of blades.