Why helicopter has two propellers

1.	Why helicopter has two propellers
Answer» TION:Have you ever thought why some helicopters have two propellers? The MAIN rotor creates lift by re-directing the FLOW of AIR downward. ... Therefore torque tends to turn the aircraft in one way and the tail rotor's thrust opposes this. To turn the helicopter in the OPPOSITE way, the tail rotor thrust is reduced

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Why helicopter has two propellers​

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Why helicopter has two propellers