If you have not read Chapter 1 recently, I suggest that you reread it now, as you are ready to begin your hovering practice. Buy Hermes Birkin Purse. The packets are controlled primarily by pressure between the inside of the outer joint of the thumb and the base of the index finger. Vector analysis can be used to understand how lift is produced by the rotor system. Buy Hermes Birkin Purse. The nose will try to swing in one direction or the other, and the rotor blades may be slightly out of track. When the helicopter has lost about half of its altitude, increase the throttle/collective and transition to forward flight. Buy Hermes Birkin Purse. I like to think of this as placing a small force on the helicopter for a short time to get it moving in the direction I want.