WRITE A SHORT NOTE ON HELICOPTER (3-marks)
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Answer:
A helicopter is a type of rotorcraft in which lift and thrust are supplied by horizontally-spinning rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of VTOL (Vertical TakeOff and Landing) aircraft cannot perform
Explanation:
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Answer:
A helicopter (also often used: chopper or heli) is a kind of flying machine or aircraft. A helicopter lifts up off of the ground and moves because of its rotors. A rotor is several small wings, called rotor blades, that spin together around a shaft. For that reason, helicopters are sometimes called rotary-wing aircraft. A helicopter flies differently from an airplane. An airplane must move forward to stay in the air, but because the helicopter's rotor blades are always moving, the helicopter can stop and stay in one place above the ground. Not needing a runway, they can land in places where an airplane cannot. Helicopters can move by tilting their rotor blades, which causes the aircraft to fly in the direction the blades are tilted.
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