How Helicopters Work

Helicopters fly sheet up against the force of gravity by expend their rotors to throw air down beneath them. Like the fly of an airplane, each blade in a eggbeaters rotor is an airfoil (aerofoil): a wing with a turn top and a straight bottom. As the blade spins around, it forces air over its curved upper surface and then throws it down behind it toward the ground, producing an upward force called twine. The slash of the blades (the angle they draw a bead on through to the entrance airflow) go fors the heart of lift. During takeoff, the buff increases the pitch with a wangle called the collective pitch stick. The lift produced is greater than the choppers weight and this makes the chop rise upward. If the lift exactly equals the weight, the helicopter hovers. If the weight is greater than the lift, the helicopter descends to Earth. turn of events the throttle increases the speed of the blades and also increases lift. usually the lift produced by the rotor aims s traight upward, but the pilot can run the rotor blades with a device called the cyclical pitch overlook to make the helicopter fly in a feature direction. Although most of the lift force still points upward, some of it now also points to the front, back, left, or right, tilting the entire helicopter and pushing it in that direction.

The pilots carryments are transmitted from the cockpit to the rotor blades by two disks called the upper and trim down splash plates. The lower louse up plate does non rotate, but can tilt or move up and down. The upper swash plate spins with the rotors on ballock bearings on top of the lower swash plate. When the pilot! pushes the controls, the lower swash plate nudges the upper swash plate, and the blades are lean in turn by a system of control rods. hypertext transfer protocol://www.explainthatstuff.com/helicopter.html 11/10/2012 06:11 PM A helicopter rotor rotates on a fit(p) axle, and yet manages to make the helicopter tilt and turn. It does this by a mechanism in which the pitch of the blades can be...If you want to get a encompassing essay, order it on our website: OrderCustomPaper.com

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