Early flying machines include all forms of aircraft studied or constructed before the development of the modern aeroplane by 1910. The story of modern flight begins more than a century before the first successful manned aeroplane, and the earliest aircraft thousands of years before.
Primitive beginnings
Legends Some ancient mythologies feature legends of men using flying devices. One of the earliest known is the Greek legend of Daedalus; in Ovid's version, Daedalus fastens feathers together with thread and wax to mimic the wings of a bird. Other ancient legends include the Hindu Mythology's Vimana flying palace or chariot from the Puranas, the biblical Ezekiel's Chariot, the Irish roth rámach built by blind druid Mug Ruith and Simon Magus, various stories about magic carpets, and the mythical British King Bladud, who conjured up flying wings. The Flying Throne of Kay Kāvus was a legendary eagle-propelled craft built by the mythical Shah of Persia, Kay Kāvus, used for flying him all the way to China.
Early attempts
According to Aulus Gellius, the Ancient Greek philosopher, mathematician, astronomer, statesman, and strategist Archytas of Taranto (428–347 BC) was reputed to have designed and built the first artificial, self-propelled flying device, a bird-shaped model (called Archytas's flying dove) propelled by a jet of what was probably steam, said to have actually flown some 200 metres around 400 BC.Gellius, Aulus, "Attic Nights", Book X, 12.9 at LacusCurtius According to Gellius, this machine, which its inventor called The Pigeon (Greek: Περιστέρα "Peristera"), was suspended on a wire or pivot for its "flight" and was powered by a "concealed aura or spirit".Automata history.
Eventually some tried to build flying devices, such as birdlike wings, and to fly by jumping off a tower, hill, or cliff. During this early period physical issues of lift, stability, and control were not understood, and most attempts ended in serious injury or death. In the 1st century AD, Chinese Emperor Wang Mang recruited a specialist scout to be bound with bird feathers; he is claimed to have glided about 100 meters.Book of Han, Biography of Wang Mang, 或言能飞，一日千里，可窥匈奴。莽辄试之，取大鸟翮为两翼，头与身皆著毛，通引环纽，飞数百步堕 In 559 AD, Yuan Huangtou is said to have landed safely from an enforced tower jump.(永 定三年）使元黄头与诸囚自金凤台各乘纸鸱以飞，黄头独能至紫陌乃堕，仍付御史中丞毕义云饿杀之。(Rendering: [In the 3rd year of Yongding, 559], Gao Yang conducted an experiment by having Yuan Huangtou and a few prisoners launch themselves from a tower in Ye, capital of the Northern Qi. Yuan Huangtou was the only one who survived from this flight, as he glided over the city wall and fell at Zimo [western segment of Ye] safely, but he was later executed.) Zizhi Tongjian 167.
The Andalusian scientist Abbas ibn Firnas (810–887 AD) reportedly made a glide in Córdoba, Spain, covering his body with vulture feathers and attaching two wings to his arms.Lynn Townsend White, Jr. (Spring, 1961). "Eilmer of Malmesbury, an Eleventh Century Aviator: A Case Study of Technological Innovation, Its Context and Tradition", Technology and Culture 2 (2), pp. 97–111 The flight attempt was reported by the 17th-century Algerian historian Ahmed Mohammed al-Maqqari, who linked it to a 9th-century poem by one of Muhammad I of Córdoba's court poets. Al-Maqqari stated that Firnas flew some distance, before landing with some injuries, attributed to his lacking a tail (as birds use to land). The historian Lynn Townsend White, Jr., concluded that ibn Firnas made the first successful flight in history.
In the twelfth century, William of Malmesbury stated that the 11th-century Benedictine monk Eilmer of Malmesbury attached wings to his hands and feet and flew a short distance, but broke both legs while landing, also having neglected to make himself a tail.
Early kites
The kite was invented in China, possibly as far back as the 5th century BC by Mozi (also Mo Di) and Lu Ban (also Gongshu Ban). These leaf kites were constructed by stretching silk over a split bamboo framework. The earliest known Chinese kites were flat (not bowed) and often rectangular. Later, tailless kites incorporated a stabilizing bowline. 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.
In 549 AD, a kite made of paper was used as a message for a rescue mission. Ancient and medieval Chinese sources list other uses of kites for measuring distances, testing the wind, lifting men, signalling, and communication for military operations.
After its introduction into India, the kite further evolved into the fighter kite. Traditionally these are small, unstable single line flat kites where line tension alone is used for control, and an abrasive line is used to cut down other kites.
Kites also spread throughout Polynesia, as far as New Zealand. Anthropomorphic kites made from cloth and wood were used in religious ceremonies to send prayers to the gods. By 1634, kites had reached the West, with an illustration of a diamond kite with a tail appearing in Bate's Mysteries of nature and art.
Man-carrying kites 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. 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.
In 1282, the European explorer Marco Polo described the Chinese techniques then current and commented on the hazards and cruelty involved. To foretell whether a ship should sail, a man would be strapped to a kite having a rectangular grid framework and the subsequent flight pattern used to divine the outlook.
Rotor wings
The use of a rotor for vertical flight has existed since the 4th century AD in the form of the bamboo-copter, an ancient Chinese toy. The bamboo-copter is spun by rolling a stick attached to a rotor. The spinning creates lift, and the toy flies when released. The philosopher Ge Hong's book, the Baopuzi (Master Who Embraces Simplicity), written around 317, describes the apocryphal use of a possible rotor in aircraft: "Some have made flying cars [feiche 飛車] with wood from the inner part of the jujube tree, using ox-leather (straps) fastened to returning blades so as to set the machine in motion."
The similar "moulinet à noix" (rotor on a nut), as well as string-pull toys with four blades, appeared in Europe in the 14th century.
Hot air balloons
From ancient times the Chinese have understood that hot air rises and have applied the principle to a type of small hot air balloon called a sky lantern. A sky lantern consists of a paper balloon under or just inside which a small lamp is placed. Sky lanterns are traditionally launched for pleasure and during festivals. According to Joseph Needham, such lanterns were known in China from the 3rd century BC. Their military use is attributed to the general Zhuge Liang, who is said to have used them to scare the enemy troops.
There is evidence the Chinese also "solved the problem of aerial navigation" using balloons, hundreds of years before the 18th century.
The Renaissance Eventually some investigators began to discover and define some of the basics of scientific aircraft design. Powered designs were either still driven by man-power or used a metal spring. In his 1250 book De mirabili potestate artis et naturae (Secrets of Art and Nature), the Englishman Roger Bacon predicted future designs for a balloon filled with an unspecified aether as well as a man-powered ornithopter, claiming to know someone who had invented the latter.
Leonardo da Vinci
Leonardo da Vinci studied bird flight for many years, analyzing it rationally 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", anticipating Isaac Newton's third law of motion (published in 1687). From the last years of the 15th century onwards, Leonardo wrote about and sketched many designs for flying machines and mechanisms, including ornithopters, fixed-wing gliders, rotorcraft and parachutes. His early designs were man-powered types including rotorcraft and ornithopters (improving on Bacon's proposal by adding a stabilizing tail). He eventually came to realise the impracticality of these and turned to controlled gliding flight, also sketching some designs powered by a spring.
In 1488, Leonardo drew a hang glider design in which the inner parts of the wings are fixed, and some control surfaces are provided towards the tips (as in the gliding flight of birds). His drawings survive and are deemed flight-worthy in principle, but he himself never flew in such a craft. – describes the building and successful flight of a glider based on Leonardo's design In an essay titled Sul volo (On flight), he 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." Some of Leonardo's other designs, such as the four-person aerial screw, similar to a helicopter, have severe flaws. He drew and wrote about a design for an ornithopter around 1490. Leonardo's work remained unknown until 1797, and so had no influence on developments over the next three hundred years.
Other attempts In 1496, a man named Seccio broke both arms in Nuremberg while attempting flight. In 1507, John Damian strapped on wings covered with chicken feathers and jumped from the walls of Stirling Castle in Scotland, breaking his thigh; he later blamed it on not using eagle feathers.
The earliest report of an attempted jet flight dates back to the Ottoman Empire. In 1633, the aviator Lagâri Hasan Çelebi reportedly used a cone-shaped rocket to make the first attempt at a jet flight.
Francis Willughby's suggestion, published in 1676, that human legs were more comparable to birds' wings in strength than arms, had occasional influence. On 15 May 1793, the Spanish inventor Diego Marín Aguilera jumped with his glider from the highest part of the castle of Coruña del Conde, reaching a height of about 5 or 6 m, and gliding for about 360 metres. As late as 1811, Albrecht Berblinger constructed an ornithopter and jumped into the Danube at Ulm.
Lighter than air
Balloons
The modern era of lighter-than-air flight began early in the 17th century with Galileo Galilei's experiments in which he showed that air has weight. Around 1650, Cyrano de Bergerac wrote some fantasy novels in which he described the principle of ascent using a substance (dew) he supposed to be lighter than air, and descending by releasing a controlled amount of the substance. Francesco Lana de Terzi measured the pressure of air at sea level and in 1670 proposed the first scientifically credible lifting medium in the form of hollow metal spheres from which all the air had been pumped out. These would be lighter than the displaced air and able to lift an airship. His proposed methods of controlling height are still in use today: carrying ballast which may be dropped overboard to gain height, and venting the lifting containers to lose height. In practice de Terzi's spheres would have collapsed under air pressure, and further developments had to wait for more practicable lifting gases.
The first documented balloon flight in Europe was of a model made by the Brazilian-born Portuguese priest Bartolomeu de Gusmão. On 8 August 1709, in Lisbon, he made a small hot-air balloon of paper with a fire burning beneath it, lifting it about in front of king John V and the Portuguese court.