Last night I was watching a film that featured a couple of BlackHawk choppers, when one of my friends turned to me and asked why the tail rotor was set angled slightly downward. I was rather embarrassed not to be able to provide him with a definite answer. Can anyone explain it for me?
Thinking it through, it seems that the tail rotor must provide some pitch force, but surely when the rotor changes speed/angle to yaw the aircraft, the pitch will change as well?
Cheers
Ginger
