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| 3.2. THE FOUR FORCES ACTING ON A HELICOPTER Weight and drag act on a helicopter as they do on all aircraft. However, lift and thrust for a helicopter are obtained from the main rotor. In a very basic sense, the helicopter's main rotor does what wings and a propeller do for an airplane. Moreover, by tilting the main rotor, the pilot can make the helicopter fly to either side or to the rear. The controls used by the pilot are discussed in the next paragraph.
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Last Updated: January 10, 2009
