Flight The Complete History Of Aviation Pdf

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Thehistory of aviation extends for more than 2000 years, from the earliest forms of aviation such as kites and attempts at tower jumping to supersonic and hypersonic flight by powered, heavier-than-air jets.

Kite flying in China dates back to several hundred years BC and slowly spread around the world. It is thought to be the earliest example of man-made flight. Leonardo da Vinci's 15th-century dream of flight found expression in several rational designs, but which relied on poor science.

In the late 18th century, the Montgolfier brothers invented the hot-air balloon and began manned flights. At almost the same time, the discovery of hydrogen gas led to the invention of the hydrogen balloon.[1] Various theories in mechanics by physicists during the same period, such as fluid dynamics and Newton's laws of motion, led to the foundation of modern aerodynamics, most notably by Sir George Cayley. Balloons, both free-flying and tethered, began to be used for military purposes from the end of the 18th century, with the French government establishing Balloon Companies during the French Revolution.[2]

Experiments with gliders provided the groundwork for learning the dynamics of heavier-than-air craft, most notably by Cayley, Otto Lilienthal, and Octave Chanute. By the early 20th century, advances in engine technology and aerodynamics made controlled, powered flight possible for the first time. In 1903, following their pioneering research and experiments with wing design and aircraft control, the Wright brothers successfully incorporated all of the required elements to create and fly the first aeroplane. The basic configuration with its characteristic tail was established by 1909, followed by rapid design and performance improvements aided by the development of more powerful engines.

The first great ships of the air were the rigid dirigible balloons pioneered by Ferdinand von Zeppelin, which soon became synonymous with airships and dominated long-distance flight until the 1930s, when large flying boats became popular. After World War II, the flying boats were in their turn replaced by land planes, and the new and immensely powerful jet engine revolutionised both air travel and military aviation.

In the latter part of the 20th century, the advent of digital electronics produced great advances in flight instrumentation and "fly-by-wire" systems. The 21st century saw the large-scale use of pilotless drones for military, civilian and leisure use. With digital controls, inherently unstable aircraft such as flying wings became possible.

Since antiquity, there have been stories of men strapping birdlike wings, stiffened cloaks or other devices to themselves and attempting to fly, typically by jumping off a tower. The Greek legend of Daedalus and Icarus is one of the earliest known;[5] others originated from ancient Asia[6] and the European Middle Age. During this early period, the issues of lift, stability and control were not understood, and most attempts ended in serious injury or death.

The kite may have been the first form of man-made aircraft.[1] It was invented in China possibly as far back as the 5th century BC by Mozi (Mo Di) and Lu Ban (Gongshu Ban).[11] Later designs often emulated flying insects, birds, and other beasts, both real and mythical. Some were fitted with strings and whistles to make musical sounds while flying.[12][13][14] Ancient and mediaeval Chinese sources describe kites being used to measure distances, test the wind, lift men, signal, and communicate and send messages.[15]

Man-carrying kites are believed to have been used extensively in ancient China, for both civil and military purposes and sometimes enforced as a punishment. An early recorded flight was that of the prisoner Yuan Huangtou, a Chinese prince, in the 6th century AD.[16] Stories of man-carrying kites also occur in Japan, following the introduction of the kite from China around the seventh century AD. It is said that at one time there was a Japanese law against man-carrying kites.[17]

The use of a rotor for vertical flight has existed since 400 BC in the form of the bamboo-copter, an ancient Chinese toy.[18][19] The similar "moulinet noix" (rotor on a nut) appeared in Europe in the 14th century AD.[20]

Eventually, after Ibn Firnas's construction, some investigators began to discover and define some of the basics of rational aircraft design. Most notable of these was Leonardo da Vinci, although his work remained unknown until 1797, and so had no influence on developments over the next three hundred years. While his designs are rational, they are not scientific.[23] He particularly underestimated the amount of power that would be needed to propel a flying object,[24] basing his designs on the flapping wings of a bird rather than an engine-powered propeller.[25]

Leonardo studied bird and bat flight,[24] claiming the superiority of the latter owing to its unperforated wing.[26] He analyzed these and anticipating many principles of aerodynamics. He understood that "An object offers as much resistance to the air as the air does to the object."[27] Isaac Newton would not publish his third law of motion until 1687.

From the last years of the 15th century until 1505,[24] Leonardo wrote about and sketched many designs for flying machines and mechanisms, including ornithopters, fixed-wing gliders, rotorcraft (perhaps inspired by whirligig toys), parachutes (in the form of a wooden-framed pyramidal tent) and a wind speed gauge.[24] His early designs were man-powered and included ornithopters and rotorcraft; however he came to realise the impracticality of this and later turned to controlled gliding flight, also sketching some designs powered by a spring.[28]

In an essay titled Sul volo (On flight), Leonardo describes a flying machine called "the bird" which he built from starched linen, leather joints, and raw silk thongs. In the Codex Atlanticus, he wrote, "Tomorrow morning, on the second day of January, 1496, I will make the thong and the attempt."[25] According to one commonly repeated, albeit presumably fictional story, in 1505 Leonardo or one of his pupils attempted to fly from the summit of Monte Ceceri.[24]

In 1670, Francesco Lana de Terzi published a work that suggested lighter than air flight would be possible by using copper foil spheres that, containing a vacuum, would be lighter than the displaced air to lift an airship. While theoretically sound, his design was not feasible: the pressure of the surrounding air would crush the spheres. The idea of using a vacuum to produce lift is now known as vacuum airship but remains unfeasible with any current materials.

In 1709, Bartolomeu de Gusmo presented a petition to King John V of Portugal, begging for support for his invention of an airship, in which he expressed the greatest confidence. The public test of the machine, which was set for 24 June 1709, did not take place. According to contemporary reports, however, Gusmo appears to have made several less ambitious experiments with this machine, descending from eminences. It is certain that Gusmo was working on this principle at the public exhibition he gave before the Court on 8 August 1709, in the hall of the Casa da ndia in Lisbon, when he propelled a ball to the roof by combustion.[clarification needed]

Non-steerable balloons were employed during the American Civil War by the Union Army Balloon Corps. The young Ferdinand von Zeppelin first flew as a balloon passenger with the Union Army of the Potomac in 1863.

In the early 1900s, ballooning was a popular sport in Britain. These privately owned balloons usually used coal gas as the lifting gas. This has half the lifting power of hydrogen so the balloons had to be larger, however, coal gas was far more readily available and the local gas works sometimes provided a special lightweight formula for ballooning events.[29]

Work on developing a steerable (or dirigible) balloon continued sporadically throughout the 19th century. The first powered, controlled, sustained lighter-than-air flight is believed to have taken place in 1852 when Henri Giffard flew 15 miles (24 km) in France, with a steam engine driven craft.

The first aircraft to make routine controlled flights were non-rigid airships (sometimes called "blimps".) The most successful early pioneering pilot of this type of aircraft was the Brazilian Alberto Santos-Dumont who effectively combined a balloon with an internal combustion engine. On 19 October 1901, he flew his airship Number 6 over Paris from the Parc de Saint Cloud around the Eiffel Tower and back in under 30 minutes to win the Deutsch de la Meurthe prize. Santos-Dumont went on to design and build several aircraft. The subsequent controversy surrounding his and others' competing claims with regard to aircraft overshadowed his great contribution to the development of airships.

At the same time that non-rigid airships were starting to have some success, the first successful rigid airships were also being developed. These would be far more capable than fixed-wing aircraft in terms of pure cargo carrying capacity for decades. Rigid airship design and advancement was pioneered by the German count Ferdinand von Zeppelin.

Construction of the first Zeppelin airship began in 1899 in a floating assembly hall on Lake Constance in the Bay of Manzell, Friedrichshafen. This was intended to ease the starting procedure, as the hall could easily be aligned with the wind. The prototype airship LZ 1 (LZ for "Luftschiff Zeppelin") had a length of 128 m (420 ft) was driven by two 10.6 kW (14.2 hp) Daimler engines and balanced by moving a weight between its two nacelles.

Its first flight, on 2 July 1900, lasted for only 18 minutes, as LZ 1 was forced to land on the lake after the winding mechanism for the balancing weight had broken. Upon repair, the technology proved its potential in subsequent flights, bettering the 6 m/s speed attained by the French airship La France by 3 m/s, but could not yet convince possible investors. It would be several years before the Count was able to raise enough funds for another try.

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