Download Transportation (DK Eyewitness Books) by DK Publishing PDF

By DK Publishing

All new content material. Eyewitness Transportation introduces readers to the area of trains, planes, vehicles, and extra! We discover the realm of transportation, and transportation worldwide. From the origins of all demeanour of wagons, bicy

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Rotor blade of helicopter off the ground French engineer Paul Cornu can be seen here in his creation—the first manned helicopter. He flew it in 1907, but only for 20 seconds, rising just 1 ft (30 cm) off the ground. Cornu’s machine flew, but could not be controlled. Realizing the impracticality of his design, he abandoned it soon afterward. Rotorcraft Aircraft that fly by using spinning rotors are called rotorcraft. The two main types of rotorcraft are the autogyro and the helicopter. Cierva C-30 autogyro autogyro The first important breakthrough in rotorcraft came in 1923 when Spanish engineer Juan de la Cierva invented the autogyro.

Thrust is the force generated by the engine that pushes the plane through the air. Drag is friction—the force of air hitting the body of the aircraft that slows it down. Weight is the force of gravity pulling the aircraft down toward THRUST the ground. Lift is the force produced by air passing over the curved wings of the plane, pushing it upward. Machine gun dominating the skies The onset of World War I fueled the growth of the aircraft industry, as the opposing forces needed reliable aircraft that could fly into combat every day.

It states that for every action, there is an equal and opposite reaction. Jet engines suck in air through the front, compress it, and then mix it with fuel in a combustion chamber. Igniting the fuel creates an explosion of hot gases that stream out of the rear of the engine, generating the thrust that pushes the plane forward. This engine is of type called a turbofan. The huge fan at the front of the engine not only pulls air through into the combustion chamber to burn the fuel. It also pulls a stream of cold air, called bypass air, around the engine and through the bypass duct, which produces extra thrust.

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