A good suggested therapy here is to book a B757 flight out of the wonderfully named John Wayne International airport in Orange County, CA. Vicious noise abatement procedures require a max energy take off - rather fun in itself - followed by complete throttle back at the airport boundary, to be held until you reach the sea, at which point the climb is recommenced at full wellie. Each time I have done it the PF has patiently explained the procedure to the pax during taxi, thus preparing one for the various stomach churning events to follow.
Incidentally the clattering noise one hears when an engine fan is turning in the wind is not the blades hitting each other, but rather the noise of each blade moving in its "fir tree" mount as it alternates up and down during rotation. Once the fan is powered up the blades are firmly held out due to their centripetal acceleration.