Helicopter Take Off
Lets consider the inputs that a pilot must make in order to make a straight take off, outside of the height velocity diagram shaded area. In a counter clockwise rotating system, the pilot will have to add some left cyclic at approximately 20 knots to counter transverse flow effect. He then will have to add forward cyclic somewhere between 16-24 knots to keep the helicopter from climbing into the shaded area of the height velocity diagram, due to the increased angle of attack that is gained with effective translational lift. As the helicopter gains enough forward speed to weathervane, the pilot will need to decrease tail rotor pitch with right pedal in order to maintain heading.
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