Killing the reference to gyroscopic precession is an ongoing battle to this IP. I freaking HATE when guys talk about it. What it comes down to is that the Hawk's (and most US combat helos) phase lag angle is just about 90*, so it's easier and more understandable to simply call it gyroscopic precession, no matter that it isn't remotely correct. Trying to explain to a non-engineer that the aerodynamic forces involved can completely overwhelm the gyroscopic forces seems a stretch too far I guess.